Surnames M
- MaCarthy, J. J. (?-?) – doctor
- Macaulay, Patrick (1792-1849, Sep.) – doctor
- Macauley, [?] (?-?) – doctor
- Macauley, [?] (?-?) – doctor
- Macauley, Patrick (?-?) – doctor
- Macauly, P. (?-?) – doctor
- MacCallum, William George (1874, Apr. 18-1944, Feb. 3) – doctor
- MacCalman, Duncan (1865, Feb. 5-?) – doctor
- Maccoun, R. T. (?-?) – doctor
- Maccubin, John M.S. (?-?) – doctor
- Macdonald, C. D.J. (?-?) – doctor
- Macdonald, Thomas L. (?-?) – doctor
- Mace, [?] (?-?) – druggist, apothecary
- Mace, Charles R. (?-1840, Jul. 16) – doctor
- Mace, John (?-?) – doctor
- Mace, John (?-?) – doctor
- Mace, Sviers (1860, Jan.-?) – doctor
- Mace, William H. (?-1889, Mar.) – doctor
- Macgill, Charles (1806-1881, May 5) – doctor
- Macgill, John Charles (1869, Dec. 25-?) – doctor
- Macgill, Lloyd T. (?-?) – doctor
- Macgill, William D. (?-?) – doctor
- Mackall, Leonard (1803-1892, Jan. 1) – doctor
- Mackall, Lewis (?-?) – doctor
- Mackall, Richard (1805, Jan. 21-1875, Mar. 2) – doctor
- Mackay, A. L. (?-1858, Feb. 10) – doctor
- Mackenzie, C. S. (?-?) – chemist, druggist
- Mackenzie, Colin (1775-1827, Sep. 1) – doctor
- Mackenzie, Edward Everett (1858, Aug. 19-?) – doctor
- Mackenzie, George Brown (1807-1833) – doctor
- Mackenzie, J. S. (?-?) – doctor
- Mackenzie, James S. (?-?) – doctor
- Mackenzie, John Nolan (1853, Oct. 20-?) – doctor
- Mackenzie, John Carrere (1824-1866) – doctor
- Mackenzie, John Pinkerton (1800, Apr. 8-1864, Jan. 14) – doctor
- Mackenzie, Samuel (?-?) – doctor
- Mackenzie, Thomas Greer (?-1867) – doctor
- Mackenzie, Thomas G. (?-?) – apothecary
- Mackenzie, Thomas G. (?-?) – doctor
- Mackenzie, Thomas G. Co. (?-?) – chymists, druggists
- MacKenzie & Brown – doctor
- Mackenzie & Co. – chemists & pharmacists
- Mackenzie & Co. – chymist, druggist, apothecary
- Mackie, James S. (?-?) – doctor
- Mackrill, [?] (?-?) – doctor
- Mackrill, Joseph (?-?) – surgeon, druggist, doctor
- MacPherson, Samuel (?-?) – apothecary
- Macpherson & Marshall – apothecary
- Mactin, L. (?-?) – doctor
- Madara, Jacob Charles (1871, Nov. 25-?) – doctor
- Maddox, C. J. (?-?) – doctor
- Maddox, T. H. (?-?) – doctor
- Maddox, T. C. (?-?) – doctor
- Maddox, Thomas (1810, Apr. 3-1887, Mar. 7) – doctor
- Maddux, Thomas Clay (1836, Feb. 10-1881, Nov. 8) – doctor
- Maezienska, Mary (?-?) – midwife
- Mager, William (?-1901, Mar. 19) – chemist
- Magill, Annie (?-?) – medical student
- Magill, Harriet (?-?) – medical student
- Magrath, John T. (?-?) – doctor
- Magruder, Charles (?-?) – doctor
- Magruder, Emma (?-?) – nurse
- Magruder, John E. (?-?) – dentist
- Magruder, Kate (?-?) – nurse, midwife
- Magruder, Robert Pottinger (?-?) – doctor
- Magruder, W. Edward (1873, Jun. 9-?) – doctor
- Magruder, William Bowie (?-?) – doctor
- Maguire, Charles (?-1847) – doctor
- Mahon, Ormsby S. (1826 ca.-1894, Apr. 3) – doctor
- Maier, John W.D. (?-?) – dentist
- Maine, Charles I. (?-?) – doctor
- Mainster, Samuel (?-?) – doctor
- Makeall, Mary (?-?) – midwife
- Malcolm, Douglas M. (?-?) – dentist
- Mall, Franklin Paine (1862, Sep. 28-1917, Nov. 17) – doctor
- Mallon, J. (?-?) – midwife
- Malloy, Charles A. (?-1895, May 5) – doctor
- Malloy, Horace (?-?) – dentist
- Malone, Frederick Roland (1859, Aug. 25-1926, Apr.) – doctor
- Malone, W. Walters (?-?) – dentist
- Malone, Walter E. (?-?) – dentist
- Man, Chase (?-?) – midwife
- Manahan, T. (?-?) – doctor
- Manakee, Thomas R. (?-?) – dentist
- Mand, W. (?-?) – doctor
- Mandigo, John S. (?-?) – dentist
- Manger, John F. (?-?) – apothecary
- Mank, William (?-?) – druggist
- Manly, T. (?-?) – dentist
- Mann, Anthony (?-?) – druggist, apothecary
- Mann, Arthur Howard (1869, Oct. 29-?) – doctor
- Mann, E. R.H. (?-?) – chiropractors
- Mann, Fred W. (?-?) – doctor
- Mann, G. R. (?-?) – doctor, chiropodist
- Mann, John (?-1862/04/29) – doctor
- Mann, Joseph R. (?-?) – doctor
- Mann, Julius C. (?-?) – chemist (house of William Mann & Co.)
- Mann, M. (?-?) – doctor?
- Mann, Stuart M. (?-?) – doctor
- Mann, William B. (?-1913, May 23) – doctor
- Mann, William B. (?-?) – dentist
- Mann, William & Co. (?-?) – chymists, druggists
- Mannakee, E. O. (?-?) – doctor
- Mannes, Charles A. (?-?) – doctor
- Manning, Anthony L. (1831, Dec. 19-1878, Jan. 28) – doctor
- Manro, J. (?-?) – doctor
- Mansbach, Isaac L. (?-?) – dentist
- Mansfield, Arthur D. (1868,Jun. 25-?) – doctor
- Mansfield, Richard W. (1840, Dec. 14-1898, Jun. 2) – doctor
- Mansfield, Samuel (?-?) – apothecary
- Manship, Sheridan Parker (1864, Sep. 20-?) – doctor
- Mantz, Ab. (?-?) – chemist
- Marbury, Alexander M. (1807, Mar. 7-1873, Feb. 3) – doctor, reverend
- Marbury, William A. (184?. Feb. ?-1916, Feb. 3) – doctor
- Marchant, Cecil J. (?-?) – dentist
- Marchant, J. Henry (?-?) – dentist
- Marden, Tilghman Brice (1870, Jan. 6-1936) – doctor
- Marine, Amanda (?-?) – midwife
- Marine, David (1880-1976) – doctor
- Marion, A.N. & Co. (?-?) – apothecary
- Maris, Edward H. (?-?) – doctor
- Maris, Edward Alexander (1820, Aug. 19-1902, Apr. 20) – doctor
- Maris, George (?-?) – druggist, apothecary
- Maris & Smith – 6/3/2018
- Markovitz, Katherine (?-?) – midwife
- Marr, F. T. (?-?) – doctor
- Marrast, John (?-?) – doctor
- Marriott, Richard (?-?) – doctor
- Marsey, Henry (?-?) – herb doctor
- Marsh, Elizabeth L. (?-?) – nurse
- Marsh, Grafton (1792-1825) – doctor
- Marsh, John (?-?) – druggist
- Marshall, Elizabeth P. (?-?) – medical student
- Marshall, Henry (?-?) – druggist
- Marshall, Henry Taylor (?-?) – doctor
- Marshall, J. A. (?-?) – doctor
- Marshall, J. A. (?-?) – doctor
- Marshall, James S. (?-?) – doctor
- Marshall, John A. (?-1855) – doctor
- Marshall, William (?-?) – honorary MD
- Marston, F. (?-?) – doctor
- Martenet, J. Fussell (1858, Jul. 5-?) – doctor
- Martenet, William H. (?-1909, Dec. 28) – doctor
- Martin, Caroline R. (1874, Mar. 1-1958, Jul. 3) – doctor
- Martin, Charles M. (?-?) – doctor
- Martin, Clara (?-?) – nurse, midwife
- Martin, Ennalls (1758, Aug. 23-1834, Dec. 16) – doctor
- Martin, Frank (1863, Oct. 21-1920, Dec. 7) – doctor
- Martin, G. P. (?-?) – doctor
- Martin, George T. (1793, Apr. 17-1860, Nov. 18) – doctor
- Martin, Henry Newell (1848-1898, Oct. 27) – doctor
- Martin, Howard T. (?-?) – dentist
- Martin, Isaac J. (?-1899, Nov. 16) – doctor
- Martin, J. D. (?-?) – doctor
- Martin, J. [Mrs.] (?-?) – chairman board of managers, Emergency Hospital
- Martin, James Risto (1909, Jan. 31-1965, Nov. 14) – doctor
- Martin, James Stansbury (1824, Apr. 2-1900, Apr. 14) – doctor
- Martin, Jane (?-?) – nurse
- Martin, John (?-?) – doctor
- Martin, John S. (?-?) – doctor
- Martin, John H. (?-?) – doctor
- Martin, John N. (?-?) – doctor
- Martin, Joseph (?-?) – chemist
- Martin, Joseph (?-?) – doctor
- Martin, Joseph Lloyd (?-?) – doctor
- Martin, Joseph Blair (1800-1847) – doctor
- Martin, Martha B. (?-?) – nurse
- Martin, Mathias (?-?) – dentist
- Martin, R. S. (?-?) – doctor
- Martin, Rose (?-?) – midwife
- Martin, Samuel (?-?) – doctor
- Martin, Samuel H. (?-?) – doctor
- Martin, Samuel Blair (1785, May-1875, Dec. 21) – doctor
- Martin, Samuel (?-?) – doctor
- Martin, Samuel B. & Dr. John Galt (?-?) – doctor
- Martin, Thomas W. (1824, Sep. 28-1906, Feb. 13) – doctor
- Martin, William F. (?-?) – dentist
- Martin, William Bond (?-1828, Feb. 2) – medical student
- Maryland Dental Asociation – dentists
- Mason, Augustine Smith (1834, Jan. 25-1911, May 26) – doctor
- Mason, Emma (?-?) – midwife
- Mason, John T. (?-1891, Jun. 2) – doctor
- Mason, Joseph B. (?-?) – chiropodist
- Mass, Franklin (?-?) – doctor
- Massamore, George W. (?-1898, Apr. 7) – dentist
- Massey, Aquilla (?-?) – doctor
- Massey, Margaret K. (?-?) – nurse
- Massey, William R. (?-?) – doctor
- Mathers, E. A. (?-?) – nurse, midwife
- Mathews, [?] (?-?) – doctor
- Mathews, J. Earl (?-?) – doctor
- Mathews, William P. (?-1822) – doctor
- Mathieu, Anthony H. (?-?) – dentist
- Mathieu, Ferdinand Charles (1849-1890, Jan. 7) – doctor
- Mathiew, Anthony H. (?-?) – dentist
- Mathiew, C. Frederick (?-?) – doctor
- Matthai, Christian E. (?-?) – patent medicines
- Matthews, Clyde V. (?-?) – dentist
- Matthews, James (1881, Oct. 21-1962, Nov. 11) – doctor
- Matthews, L. B. (?-?) – botanic physician
- Matthews, Robert M. (1853, Apr. 5-?) – doctor
- Matthews, W. J. (?-?) – doctor
- Matzger, Franklin (?-?) – apothecary
- Maughlin, Hugh A. (?-?) – doctor
- Maughlin, Hughes H. (?-?) – doctor
- Maulsby, D. J. (?-?) – doctor
- Maund, F. (?-?) – doctor
- Mauphin, Agnes (?-by 1927) – nurse
- Maurer, W. (Mrs.) (?-?) – midwife
- Maxwell, William S. (1851-1927) – doctor
- Maxwell, William M.A.S. (1820, Jan. 20-1885, May 16) – doctor
- May, Bushrod La Fayette (?-?) – doctor
- May, Charles Henry (?-?) – apothecary
- May, Frederick (?-?) – doctor
- May, John Frederick (1812-1891, May 1) – doctor
- May, Robert P. (?-?) – dentist
- Mayer, A. Henry Albert (?-?) – doctor
- Mayer, Joseph (?-?) – doctor
- Mayer, Leon H. (?-?) – dentist
- Mayes, Eleanor (?-?) – doctor
- Mayfield, Thomas (?-?) – snuff and drug mill, ink and varnish factor
- Maynard, [?] (?-?) – doctor
- Maynard, C. (?-?) – doctor
- Maynard, Clinton (?-?) – doctor
- Maynard, James (1809, Jul. 18-1861, Jun. 06) – doctor
- Maynard, S. Solers (?-?) – doctor
- Mayo, Margaret (?-?) – nurse
- Mayson, Mary A. (?-?) – midwife
- McAllister, F. W. (?-?) – optician
- McAlpine, A. d.L.H. (?-?) – medical student
- McAlpine, George (?-?) – doctor
- McAlpine, Jasmin (?-?) – doctor
- M’Cauly, James (?-?) – doctor
- McAvoy, [?] (?-?) – doctor
- McAvoy Bros. – patent medicines
- McCain, J. H. (?-?) – doctor
- McCaine, A. M. (?-?) – doctor
- McCall, Hugh (?-?) – chemist
- McCallum, J. Riley (?-?) – doctor
- McCann, David (?-?) – medical student
- McCann, Elsie (Mrs. H.C. Hood) (?-?) – nurse
- McCann, Natalie (?-by 1927) – nurse
- McCard, H. Stanton (?-?) – doctor
- McCarriar, Thomas L. (?-?) – dentist
- McCarthy, J. J. (?-?) – doctor
- McCarty, Ellen (?-?) – nurse
- McCarty, Peter E. (?-?) – doctor
- McCeney, Edward (?-1883, Feb. 1) – doctor
- McCleary, Standish (1870-?) – doctor
- McClees, J. Sheridan (?-?) – dentist
- McClellan, [?] (?-?) – doctor
- McClellan, David Wentworth Boisseau (1796, Sep. 3-1854, May) – doctor
- McClellan, H. M. (?-?) – doctor
- McClellan, Mary Oarswell (?-?) – medical student
- McClellan, W. B. (?-?) – doctor
- McCleod, Alexander B. (?-?) – dentist
- McClintock, Henry C. (?-?) – physician
- McCloskey, Marian Gertrude (?-?) – nurse
- McCloud, Alex. (?-?) – doctor
- McClue, C. Bruce (?-?) – dentist
- McClyment, James R. (?-?) – doctor
- McClyments, ? (?-?) – doctor
- McCManus, F. R. (?-?) – doctor
- McCollum, [?] (?-?) – doctor
- McConachie, Alexander Douglas (1864, Aug. 22-?) – doctor
- McConachie, Alexander C. (?-?) – doctor
- McCook, George (?-?) – doctor
- McCormick, A. M.P. (?-?) – Surgeon USN
- McCormick, C. D.M. (?-?) – doctor
- McCormick, Charles A. (?-?) – doctor
- McCormick, H. Clay (?-?) – apothecary, druggist, chemist
- McCormick, James O. (?-?) – apothecary
- McCormick, Jas. O. & N.W. (?-?) – chemist and druggists
- McCormick, Thomas Pugh (1852, May 24-?) – doctor
- McCormick, William H. (?-?) – physician
- McCoy, B. F. (?-?) – dentist
- McCoy, Henry J. (?-?) – dentist
- McCoy, John (?-?) – chemist
- McCoy, John (?-?) – veterinary surgeon
- McCoy, Robert (?-1838, May) – doctor
- McCrae, Thomas (1870-?)
- McCubbin, George (?-?)
- McCue, C. Bruce (?-?) – dentist
- McCulloch, H. G. (?-?) – doctor
- McCulloch, Hugh D. (?-?) – doctor
- McCulloch, J. (?-?) – doctor
- McCulloh, [?] (?-?) – doctor
- McCulloh, John K. (?-?) – doctor
- McCulloh, Samuel H. (?-?) – doctor
- McCullough, J. Haines (1837, Sep. 15-1889, Jul. 5) – doctor
- McCullough, James Haines (?-1836) – doctor
- McCullough, James H. (?-?) – doctor, deputy collector port of Baltimore
- McCurdy, Ira J. (1869, Mar. 6-1949, Aug.2) – doctor
- McCurdy, John K. (?-?) – doctor
- McCurdy, W. C. (?-?) – doctor
- McCurley, Isaac (?-?) – dentist
- McCusker, Alice (?-?) – nurse
- McCutcheon, Morton (1888-1962) – doctor
- McDaniel, Lena (?-?) – nurse
- McDaniel, Lillian (?-?) – nurse
- McDaniel, William (?-?) – doctor
- McDaniel & Leamy – apothecary, druggist, chemist
- McDaniel Leamy & Co. – apothecary
- McDermott, W. J. (?-?) – doctor
- McDevitt, Edward P. (1854, Oct. 12-?) – doctor
- McDivit, Harry N. (?-?) – dentist
- McDonald, Bridget (?-?) – nurse, midwife
- McDonald, G. (?-?) – doctor
- McDonald, Norval H. (?-?) – dentist
- McDonald, Oscar T. (?-1896, Jan. 1) – doctor
- McDonald, William Bartholow (1873, Aug. 15-?) – doctor
- McDonnald, P. E. (?-?) – P.A. Surgeon USN
- McDonnell, Edward (?-?) – doctor
- McDonnell, W. N. (?-?) – P.A. Surgeon USN
- McDougall, Charles (?-?)
- McDowell, [?] (?-?) – doctor
- McDowell, Charles Corfield (1851, Mar. 28-1912, Jan. 24) – doctor
- McDowell, Ephraim (1771, Nov. 11-?) – doctor
- McDowell, Hamilton (?-?) – doctor
- McDowell, John B. (?-?) – doctor
- McDowell, Maxwell (1771-1848) – doctor
- McDowell, Thomas (?-?) – doctor
- McDowell, William S. (?-1898, Jan. 2) – dentist
- McDowell, William J. (?-?) – doctor (oculist)
- McDuel, John A. (?-?) – medical student
- McElderry, Henry (?-?) – doctor
- McElderry, Hugh (?-?)
- McElfish, J. (?-?) – dentist
- McElfish, Thomas C. (?-?) – dentist
- McElfresh, Charles Wesley (1866, May 30-?)
- McElroy, James (?-?) – dentist
- McElroy, James B. (?-?) – dentist
- McElroy, Simeon A. (?-?) – dentist
- McFarland, J. Earle (?-?) – dentist
- McFarland, Joseph (?-?) – doctor
- McFarland, W. S. (?-?) – doctor
- McFarlane, Samuel (?-?) – dentist
- McGann, John H. (?-?)
- McGary, Vina (?-?) – medical student
- McGee, Henry H. (?-?) – doctor
- McGee, John W. (?-?) – dentist
- McGee, Patrick (?-?) – veterinary surgeon
- McGee, Thomas C. (?-?) – apothecary
- McGerr, Thomas (?-?) – chemist
- McGill, Charles B. (?-?)
- McGill, Thomas (?-?) – doctor
- McGill, Wardlaw (1846, May 22-1888, Oct. 27)
- McGill, William D. (1802 ca.-1833) – doctor
- McGlannan, A. W. (?-?) – apothecary
- McGlannan, Alexius (1872, Jul. 24-?) – doctor
- McGowan, D. S. (?-?) – medical student
- McGowens, Mary (?-?) – nurse
- McGraw, Henry R. (?-?) – doctor
- McGraw, Richard D. (?-?) – doctor
- McGreevy, James H. (?-?) – veterinary surgeon
- McGrew, J. F. (?-1901, Feb.) – doctor
- McGruder, John (?-?) – dentist
- McGuire, [?] (?-?) – doctor
- McGuire, Charles (?-?) – doctor
- McGuire, M. Clare (?-?) – nurse
- McHenry, James (1753, Nov. 16-1816, May 3) – doctor
- McIntire, James D. (?-1879, Apr. 12) – doctor
- McIntosh, M. (?-?) – doctor
- McIntosh, William Page (1855-?)
- McIntyre, James (?-?) – doctor
- McKay, Mary E. (?-?) – doctor
- McKay, Virginia O. (?-?) – nurse
- McKean, Alexander M. (?-?) – medical student
- McKee, Alexander (?-?) – doctor
- McKee, C. E.S. (?-?) – doctor
- McKee, James B. (1808, Sep. 15-1890, Aug. 18) – doctor
- McKee, James (?-?) – doctor
- McKeehan, B. F. T. (?-?) – doctor
- McKeehan, Samuel (?-?) – doctor
- McKellip, J. (?-?) – druggist
- McKenney, Alexander F. (?-?) – medical student
- McKenney, James (?-?) – medical student
- McKenzie, [?] (?-?) – doctor
- McKenzie, George (?-?) – doctor
- McKenzie, J. C. (?-?) – doctor
- McKenzie, J. P. (?-?) – doctor
- McKenzie, James (?-?) – doctor
- McKenzie, John N. (?-?) – doctor
- McKenzie, T. C. (?-?) – doctor
- McKenzie, T. G. (?-?) – doctor
- McKenzie & Co. – apothecaries & druggists
- McKew, D. L. (?-?) – doctor
- McKew, Dennis Ignatius (1829, Nov. 5-1885, Feb. 10) – doctor
- McKew, Wilberforce Richmond (1839, Sep. 28-?) – doctor
- McKim, Robert (?-?) – chemist
- McKim, Smith Hollins (1873, Nov. 30-1932, Sep. 20) – doctor
- McKinney, David F. (1836, Aug. 19-1915, Sep. 16) – doctor
- McKinzie, Letitia (?-?)
- McKissick, R. (?-?) – doctor
- McKnew, Mary (?-?) – midwife
- McKnight, [?] (?-?) – doctor
- McLaine, A. M. (?-?) – doctor
- McLane, G. R. (?-?) – doctor
- McLane, William L. (1845-1920, Oct. 15) – doctor
- McLaughlin, David B. (?-?) – doctor
- McLaughlin, Rose (?-?) – nurse, midwife
- McLean, Charles (1808-1883, Aug. 17) – doctor
- McLean, John A. (?-?) – doctor
- McLean, M. (?-?) – doctor
- McLeer, Margaret (?-?) – doctor
- McLeod, Albert S. (?-?) – dentist
- McLeod, James (?-1840, Mar. 6) – doctor
- McMahon, Harriet (?-?) – nurse, midwife
- McManus, F. A. (1840 ca.-1885, Apr. 16) – doctor
- McManus, Felix R. (1808 ca.-1885, Mar. 3) – doctor
- McMaster, John T.B. (?-?) – doctor
- McMechin, Thomas (?-?)
- McMillan, Katherine (?-?) – doctor
- McMillan, Martha (?-?) – nurse
- McMillen, Hugh (?-?) – chemist
- McMillen, John (?-?) – chemist
- McMinn, W. J. (?-?) – dentist
- McMurray, John B. (?-?) – doctor
- McMyers, Charles (?-1903, Dec. 4) – doctor
- McNabb, Nancy (Mrs. R.P. Bay) (?-?) – nurse
- McNary, C. Banks (?-?) – doctor
- McNeer, Richard L. (?-?) – doctor
- McNeil, [?] (?-?) – drug store
- McNeil, Luther (?-?) – registered pharmacist
- McNeill’s Progressive Pharmacy – pharmacist
- McNeil’s Pharmacy – druggist
- McNemar, Oscar H. (1872, Aug. 26-1958, Mar. 21) – doctor
- McNew, Walter (?-?) – hospital apprentice
- McNultry, William F. (?-?) – dentist
- McNulty, John (?-?) – doctor
- McNulty, William F. (?-?) – dentist
- McPhail, Leonard (?-1867) – doctor
- McPherson, J. B. (?-?) – doctor
- McPherson, J. C. (?-?) – doctor
- McPherson, James B. (?-?) – dentist
- McPherson, John (?-?) – doctor
- McPherson, Maynard (?-?) – doctor
- McPherson, W. C. (?-?) – medical student
- McPherson, William Smith (1792, Mar. 4-1879, Nov. 20) – doctor
- McPherson, William S. (1824, Dec. 28-1917, Jan. 15) – doctor
- McQuinn, William (?-?) – doctor
- McRae, Jay Guy (?-?) – doctor
- McReynolds, George S. (?-?) – doctor
- McReynolds, J. O. (?-?) – doctor
- McShane, James Francis (1851, Aug. 31-?)
- McShary, Francis (?-?) – chemist
- McSherry, H. F. (?-1867) – doctor
- McSherry, Helen (?-?) – nurse
- McSherry, Henry Clinton (1851, Sep. 1-?)
- McSherry, Joseph F. (?-?) – dentist
- McSherry, Richard (1817, Nov. 21-1885, Oct. 7) – doctor
- M’Culloch, James H. (?-?) – doctor
- McVoy, Diego (?-?) – doctor
- McWilliams, Ambrose (?-?)
- McWilliams, P. A. (?-?) – doctor
- M’Dowell, [?] (?-?) – doctor
- Meade, W. C. (?-1880, Jan. 27) – doctor
- Mearis, Edward A. (?-?) – doctor
- Medcalf, W. T. (?-?) – doctor
- Medcalfe, William H. (?-?)
- Medders, Charles Hamilton (1869-1947)
- Medders, David A. (1865-1948) – doctor
- Medinger, Edward C. (?-?) – apothecary
- Medinger, Edward G. (?-?) – druggist
- Meeker, John (?-?) – doctor
- Megary, Joseph N. (?-?) – chiropractor
- Mehren, Katherine (?-?) – midwife
- Meierhof, Edward Lee (1860-?)
- Meikle, Frank A. (?-?) – apothecary
- Meirhof, Lee (?-?) – doctor
- Meisner, Ida (?-?) – medical student
- Mellier, DeB. (?-?) – medical student
- Mellinger, Jacob (?-1904, Jul. 26) – chemist
- Mellner, Constance (Mrs. Wine) (?-?) – nurse
- Mellus, Edward Lindon (1848, May 24-1922, Dec. 18) – doctor
- Meloney, W. B. (?-?) – doctor
- Melvin, Walter H. (1834-1876, Sep. 16) – doctor
- Menard, Louis F.F. (?-?) – dentist
- Mendelsohn, Abraham H. (?-?) – dentist
- Mercer, Archibald (?-?) – doctor
- Mercer, T. N. (?-?) – doctor
- Mercer, William M. (?-?) – doctor
- Mercer, William M. (?-1904, Mar. 24) – doctor
- Merceret, Julius (?-?) – student of medicine
- Meredith, Andrew (?-?) – doctor
- Meredith, Florence (Mrs. C. Hicks) (?-?) – nurse
- Meredith, Frances M. (?-?) – nurse
- Meredith, Mary E. (?-?) – nurse
- Meredith, William H. (1835, Aug. 9-1905, Jul. 18) – doctor
- Mergardt, Clara (Mrs. J. Reifsneider) (?-?) – nurse
- Mergardt, Emma (Mrs. Stow) (?-?) – nurse
- Merrefield, William J. (?-?) – doctor
- Merriam, Walter R. (?-?) – dentist
- Merrick, Samuel K. (1848, Aug. 22-?)
- Merrilat, J. C. (?-1881, Sep. 18) – doctor
- Merrington, Ruth (?-?) – medical student
- Merryman, George (?-1885, Sep. 24) – surgeon dentist
- Merryman, M. (?-?) – doctor
- Merryman, Moses Washington (1827, Feb. 15-1904, Jan. 25) – doctor
- Merryman, Moses (?-1822) – doctor
- Merryman, Ridgaway R. (?-?) – dentist
- Mesenzehl, Anna (?-?) – nurse, midwife
- Mesenzehl, Joseph (?-?) – nurse, midwife
- Messick, William Irvin (1869, Jun. 16-?)
- Mettauer, John Peter (1787-1875, Nov. 22)
- Mettaur, John P. (?-?) – doctor
- Mettee, Albert R. (?-?) – patent medicines
- Mettee, Margaret J. (?-?) – cupper, leecher
- Metz, Joseph F. (?-?) – dentist
- Metzgar, Franklin (?-?) – apothecary
- Metzger, Francis (?-1884, Jul. 31) – druggist
- Meyer, Adolf (1866, Sep. 13-1950, Mar. 17) – doctor
- Meyer, Charles H. (1860, Oct. 27-?)
- Meyer, George (?-?) – veterinary surgeon
- Meyer, John H. (?-?) – doctor
- Meyer, John F. (?-?) – apothecary
- Meyers, Mary A. (?-?) – midwife
- Mezger, Charles (?-?) – dentist
- M’Gare, Francis (?-?) – chemist
- Michael, Charles (?-?) – doctor
- Michael, Jacob Edwin (1848, May 13-1895, Dec. 7) – doctor
- Micheau, Ellis (1852, Dec. 15-?)
- Micheau, Theodore J. (?-1895, Mar. 10) – doctor
- Michie, A. [Mrs.] (?-?) – hospital matron
- Michler, William H.H. (?-?) – doctor
- Mickall, Lewis (?-?) – student of medicine
- Middlemore, Josiah (?-1755) – doctor
- Middleton, James (?-1818) – doctor
- Middleton, John D. (?-?) – doctor (homeopathic)
- Mifflin, Robert W. (?-?) – doctor
- Milbourne, Leander B. (?-?) – dentist
- Milburn, James A. (?-?) – apothecary
- Milburn, James A. (?-?) – patent medicines
- Miles, Benjamin Briscoe (1840-1878, Feb. 8) – doctor
- Miles, Francis Turquand (1827 ca.-1903, Jul. 30)
- Miles, James J. (?-?)
- Miles, Juliet (Mrs. Russell Perkins) (?-?) – nurse
- Miles, Thomas F. (?-?) – doctor
- Milhaw, John F. (?-?) – druggist
- Milholland, Edward Vincent (1873, Nov. 17-?)
- Milholland, Edward Francis (1837, Sep. 30-?) – doctor
- Milholland, George V. (?-?) – dentist
- Milich, Christina (?-?) – midwife
- Milland, D. T. (?-?) – doctor
- Millar, John William (?-?) – doctor
- Millard, D. T. (?-?) – doctor
- Millard, D. T. (?-?) – doctor
- Miller, [?] (?-?) – doctor
- Miller, [?] (?-?) – doctor
- Miller, C. Edward (1846, Jan. 28-1878, Dec. 1) – doctor
- Miller, Caspar O. (?-?) – doctor
- Miller, Charles (?-?) – druggist
- Miller, Charles (?-?) – dentist
- Miller, Chester E. (?-?) – dentist
- Miller, D. M. (?-?) – doctor
- Miller, Edward A. (?-1867) – doctor
- Miller, Edward (?-?) – doctor
- Miller, George McC. (?-?) – doctor
- Miller, Henry (?-?) – doctor
- Miller, Henry (?-?) – doctor
- Miller, Irving (?-?) – doctor (homeopath)
- Miller, J. B. (?-?) – doctor
- Miller, Jacob (?-?) – veterinary surgeon
- Miller, James Henry (1788, Jan 20-1853, May 25) – doctor; professor of theory and practice of medicine in Washington Medical College
- Miller, James B. (?-?) – physician
- Miller, John (?-?) – doctor
- Miller, John H. (?-?) – doctor
- Miller, John (1821-1895) – doctor
- Miller, Lillian G. (?-?) – doctor
- Miller, Mary (?-?) – nurse
- Miller, Mary C. (?-?) – nurse
- Miller, Maude (Mrs. Coulbourne) (?-?) – nurse
- Miller, Olivia (?-?) – doctor
- Miller, S. H. (?-?) – doctor
- Miller, Samuel (?-?) – medical student
- Miller, Sylvester M. (?-?) – dentist
- Miller, Theodore K. (?-?) – medical student
- Miller, Thomas (?-?) – surgeon dentist
- Miller, William E. (?-1913, Nov. 23) – doctor
- Miller, William H. F. (?-?) – doctor
- Miller, William Preston (?-?)
- Miller, William & Son (?-?) – dentist
- Millholland, E. F. (?-?) – doctor
- Milliman, Thomas A. (1859, Oct. 9-?) – doctor
- Milling, William H. (?-?) – doctor
- Mills, J. B. (?-?) – doctor
- Mills, James J. (1863-?) – doctor
- Mills, William A. (?-?) – dentist
- Mills, William (?-?) – doctor
- Milner, Magnus B. (?-?) – dentist
- Miltenberger, George Warner (1819, Mar. 17-1905, Dec. 11) – doctor
- Milton, Edward (?-?) – doctor
- Milton, Louise D. (?-?) – nurse
- Mine, William L. (?-?) – dentist
- Minis, Phil. C. (?-?) – surgeon, US Army
- Minnis, Jemina (?-?) – nurse
- Minnis, Nancy (?-?) – nurse
- Minnis, Rosamond (?-?) – nurse
- Minor, Evelyn (?-?) – nurse
- Misikofski, Martha (?-?) – nurse
- Missing, Christian (?-?)
- Mitchell, Alvira D. (?-?) – midwife
- Mitchell, Charles Wellman (1859, Feb. 4-?) – doctor
- Mitchell, Charles H. (1857, Jul. 29-1898, Jul. 22)
- Mitchell, Edna (?-?) – nurse
- Mitchell, George W. (?-?) – doctor
- Mitchell, H. E. (?-?) – doctor
- Mitchell, J. H. (?-?) – doctor
- Mitchell, James E. (1843, Feb. 20-1873, Nov. 7) – doctor
- Mitchell, John (?-?) – doctor
- Mitchell, Millard L. (?-?) – doctor
- Mitchell, S. Weir (1829, Feb. 15-?) – doctor, poet, novelist
- Mitchell, Thomas (?-?)
- Mitnick, Jacob H. (1856, Sep. 7-?) – doctor
- Mitten, Harry W. (1884, Apr. 15-1956, Apr. 4) – doctor
- Mitten, Harry W. (1912, Dec. 2-1994, Jun. 25) – doctor
- Mittnacht, Henry (?-?) – apothecary, durggist, chemist
- M’Kechnie, Lundis (?-?) – surgeon-dentist
- M’Kenzie, Florence (?-?) – doctor
- M’Kenzie, Thomas G. & Co. (?-?) – apothecary
- M’Kim, Robert E. (?-?) – apothecary
- M’Millan, Hugh (?-?) – chemist
- Moale, William A. (?-?)
- Mofitt, C. M. (?-?) – doctor
- Mohler, Anna (?-?) – nurse
- Moir, S. A. (?-by 1936) – doctor
- Molleson, William (?-1790) – doctor
- Mollison, Henry (?-?) – gentleman nurse
- Molloy, Horace E. (?-?) – dentist
- Mone & Diffenbach – druggist
- Monkier, John C. (?-?) – doctor
- Monks, Georgiana (?-?) – medical student
- Monkur, John Cavendish Smith (1800, Jan. 1-1867, Jan. 2) – doctor
- Monmonier, [?] (?-?) – doctor
- Monmonier, J. Carroll (?-?) – doctor
- Monmonier, J. (?-?) – doctor
- Monmonier, John N. (?-1896, Jun. 11) – doctor
- Monmonier, John Francis (1813, Apr. 4-1894, Jun. 8) – doctor
- Monmonier, Joseph Carroll (?-1904, Apr. 6) – doctor
- Monmonier, Louis A. (?-?) – doctor
- Monroe, C. Ethel (?-?) – nurse
- Monroe, George Ovelton (?-?) – doctor
- Monroe, George O. (?-?) – doctor
- Monroe, Robert W. (?-?) – doctor
- Monroe, William Robert (1821-1894, Feb. 13) – doctor
- Monsarrat, N. (?-?) – apothecary
- Monsarrat, Oscar (?-?) – druggist
- Monsarrat, T. (?-?) – apothecary
- Monsarratt, N. (?-?) – apothecary
- Monsoratt, Oscar (?-1887, Mar. 6) – druggist
- Montagna, Francesca (?-?) – midwife
- Montague, W. C. (?-?) – doctor
- Montague, William H. (?-?) – doctor
- Montell, William A. (?-?) – dentist
- Montgomery, James (1789-1878, Apr. 11) – doctor
- Montgomery, William (?-?) – student of medicine
- Montgomery, William T. (1833-1881, Sep. 1) – doctor
- Montrite, R. (?-?) – druggist
- Moody, [?] (?-?) – doctor
- Moody, William (?-?)
- Moody & Higgins – druggists
- Moore, [?] (?-?) – doctor
- Moore, Anna C. (?-?) – nurse
- Moore, Benjamin P. (?-?) – druggist
- Moore, Cecilia (?-?) – nurse
- Moore, Charles H. (?-?)
- Moore, Daniel (?-?) – doctor
- Moore, G. H. (?-?) – doctor
- Moore, G. A. (?-1881, Dec. 7) – doctor
- Moore, Gledstone (?-?) – doctor
- Moore, Harrison C. (?-1883, Dec. 24) – druggist
- Moore, J. B. (?-?) – doctor
- Moore, J. Faris (?-1888, Feb. 3) – druggist
- Moore, J. J. (?-?) – doctor
- Moore, John H. (?-?) – druggists
- Moore, Mabel (?-?) – midwife
- Moore, Reuben (?-?) – doctor
- Moore, Robert (?-?) – doctor, coroner
- Moore, Samuel W. (?-?) – dentist
- Moore, Stabler & Co. (?-?) – druggists
- Moore, W & B (?-?) – wholesale druggists
- Moore, W. R. (?-?) – doctor
- Moore, W.W. & B.P. (?-?) – druggists
- Moore, William H. (1840, Dec. 1-1896, May 2) – doctor
- Moore, William B. (?-?)
- Moore, William W. (?-?) – wholesale druggists
- Moore, Wm. W. & Co. (?-?) – druggists
- Moore & Clendinen
- Moore & Dieffenbach – apothecary
- Moore & Emory – apothecary
- Moore & Stabler – druggists
- Moores, Daniel (1745?-1802) – doctor
- Moores, David (?-?)
- Moores, S. L. (?-?) – doctor
- Moorman, John J. (1802, Jan.-1885, Jan. 18) – doctor
- Moorman, W. C. (?-?) – chiropodist
- Moque, James E. (1833-1903) – doctor
- Moran, George H. (?-?) – doctor
- Moran, John J. (1820-1888, Dec. 13) – doctor
- Moran, Pedro deSerquira (?-?) – doctor
- Morawetz, Leopold Franz (1818, Dec. 2-1892, Oct. 26) – doctor
- Morfit, Charles M. (?-?) – doctor
- Morfit, John C. (?-?) – doctor
- Morgan, Albert S. (?-?) – doctor
- Morgan, DeWitt Clinton (?-1894, Aug. 23) – doctor
- Morgan, Gerard Edwin (1828, Jan. 7-1874, Dec. 1) – doctor
- Morgan, Grace (?-?) – medical student
- Morgan, Lucy H. (Mrs. Blacklow) (?-?) – nurse
- Morgan, Mary C. (?-?) – nurse, midwife
- Morgan, N. J.B. (?-?) – medical student
- Morgan, Oliver P. (?-?) – dentist
- Morgan, Wilbur Phelps (1841, Feb. 25-1922, Dec. 20) – doctor
- Morgan, William L. (?-?) – doctor
- Morison, James (?-?) – doctor
- Morison, Robert Brown (1853, Mar. 13-1897, Sep. 30) – doctor
- Morong, E. P. (?-?) – oculist & aurists
- Morralis, Joseph (?-?) – dentist
- Morrill, George E. (?-1880, May 20) – dentist
- Morris, Henry (?-?)
- Morris, John (1824, Feb. 6-1903, Jan. 29) – doctor
- Morris, Louis W. (1823, Nov. 10-1878, Oct. 12) – doctor
- Morris, Louis W. (1863, Oct. 16-1912, Feb. 2) – doctor
- Morris, Robert (?-?) – doctor
- Morris, Susan (?-?) – midwife
- Morris, Willam (?-?) – doctor
- Morris, William W. (?-?) – doctor
- Morrison, Edwin T. (?-1896, Aug. 7) – doctor
- Morrison, Elihah (?-?) – doctor
- Morrison, Elwood (?-?) – druggist
- Morrison, James M. (?-1899, Nov. 13) – doctor
- Morrison, John E. (?-?) – druggist
- Morrison, Morris (?-1842) – doctor
- Morrison, Robert B. (?-?) – doctor
- Morrissey, Michael J. (?-?) – doctor
- Morriston, John (?-?) – doctor
- Morrisy, M. J. (?-?) – doctor
- Morrow, Mary A. (?-?) – nurse, midwife
- Morrow, Mary G. (?-?) – medical student
- Morse, William L. (1810, Jul. 16-1885, Oct. 19) – dentist
- Morton, James Cook (?-?) – doctor
- Mosby, G. T. (?-?) – registered pharmacist
- Mosby, Pauline V. (?-?) – nurse
- Mosca, Maria (?-?) – midwife
- Mosely, Robert B. (?-?) – doctor
- Mosely, William Edward (1848, May 22-?) – doctor
- Moses, J. (?-?) – doctor
- Mosher, [?] (?-?) – doctor
- Mosher, Eliza F. (?-?) – nurse, midwife
- Mosher, William (?-?) – doctor
- Moskewich, Sophia (?-?) – midwife
- Mossmayer, Gustav (?-?) – doctor
- Mott, Richard (?-1842, Jun. 2) – doctor
- Mott, Valentine (?-?) – doctor
- Motter, George T. (?-?) – doctor
- Moultin, Rosalie (?-by 1905) – nurse
- Moumonier, John T. (?-?) – doctor
- Mount, James (?-?) – chemist
- Mouse, Lucy (?-?) – nurse
- Moyer, Frank G. (1858, Nov. 25-?) – doctor
- Moyston, James C. (?-?) – dentist
- Mrozenski, Marie (?-?) – midwife
- Mudd, George D. (1826 ca.-1899, Dec. 1) – doctor
- Mudd, Samuel Alexander (?-?) – physician
- Mudy, Henry (?-?) – doctor
- Muenell, George E. (?-?) – doctor
- Mulcrone, Michael (?-?) – nurse, midwife
- Mullan, Charles E. (?-?) – dentist
- Mullan, James A. (1834 ca.-1882, Oct. 2) – surgeon
- Muller, David (?-?) – doctor
- Muller, John R. (?-?) – doctor
- Muller, John H. (?-?) – doctor
- Mullinix, Elisha E. (1850, Aug. 21-1907, Mar. 5) – doctor
- Mullins, J. B. (?-?) – doctor
- Munchow, Goswine (?-?) – patent medicines
- Munder, Lela (?-?) – nurse
- Munnickhuvsen, W. B. (?-?) – doctor
- Munnick-huysen, W. B. (?-?) – doctor
- Munnikausen, W. B. (?-?) – doctor
- Munoz, Edward A. (1863, Mar. 21-?) – doctor
- Munroe, Anna (?-?) – nurse, midwife
- Munroe, Thomas (1807, Jan. 4-?) – doctor
- Munroe, W. R. (?-?) – doctor
- Murchison, Belle (?-?) – nurse
- Murdoch, T. E. (?-?) – doctor
- Murdock, Russell (1839, Feb. 12-1905, Mar. 19) – doctor
- Murdock, Thomas Fridge (1829, May 9-1901, Feb. 18) – doctor
- Murdock-Young, Charlotte S. (?-?) – doctor
- Murphy, D. (?-?) – doctor
- Murphy, Dennis (?-?) – doctor
- Murphy, Edward V. (?-?) – doctor
- Murphy, Francis P. (?-?) – doctor
- Murphy, J. J. (?-?) – doctor
- Murphy, John (?-?) – apothecary
- Murphy, John (?-?) – doctor
- Murphy, Mary (?-?) – nurse
- Murphy, Mary (?-?) – nurse, midwife
- Murphy, T. E. (?-?) – doctor
- Murphy, Thomas L. (?-?) – doctor
- Murray, [?] (?-?) – doctor
- Murray, Caroline (?-?) – midwife
- Murray, Carrie (Mrs. J. Smith) (?-?) – nurse
- Murray, Emma (?-?) – nurse
- Murray, James H. (1888, Oct. 1-1913, Feb. 23) – doctor
- Murray, James (?-1819) – doctor
- Murray, John J. (?-?) – medical student
- Murray, Olive (?-?) – nurse
- Murray, R. C. (?-?) – doctor
- Murray, Robert J. (1870, Sep. 24-?) – doctor
- Murray, T. Morris (?-?) – doctor
- Murray, W. H. (?-?) – doctor
- Murray, William Wilkinson (?-?) – doctor
- Muse, Bernard Purcell (1868, Jan. 23-?) – doctor
- Muse, James A. (1813, Jan. 17-1867, Nov. 21) – doctor
- Muse, Joseph E. (?-?) – doctor
- Muse, Joseph Ennalls (1826, Feb. 18-1907, Jan. 30) – doctor
- Muse, Joseph Ennalls (1862, Dec. 14-?) – doctor
- Muth, Joseph (1837 ca.-1898, Aug. 1) – druggist
- Muth Bros & Co. – druggist – wholesale
- Myer, Abraham (1812 ca.-1892, May 12) – dentist
- Myer, Bernhard (?-?) – dentist
- Myer, John J. (?-?) – apothecary
- Myer, John I. & Co. (?-?) – apothecary
- Myer, Louis A. (?-?) – dentist
- Myer, Simon B. (?-?) – dentist
- Myers, Aaron (?-?) – doctor
- Myers, Alpharetta (?-?) – nurse
- Myers, Fannie (?-?) – midwife
- Myers, J.P. & Co. (?-?) – apothecary
- Myers, Lewis (?-?) – doctor
- Myers, Louis S. (?-?) – doctor
- Mylius, Augustus (?-?) – doctor
- Myrick, Hannah Glidden (1871-1973) – doctor