Surnames I
- Ide, Burt B. (?-?) – dentist
- Ideal Dental Parlors – dentist
- Idings, C. E. (?-?) – doctor
- Igleding, Theresa (?-?) – nurse, midwife
- Iglehart, James Davidson (1850, Oct. 6-?) – doctor
- Iglehart, Nathan Edmondson Berry (1867, Mar. 19-1936) – doctor
- Iglehart, O. S. (?-?) – surgeon, USN
- Ijames, George E. (?-?) – doctor
- Inge, William (?-?) – doctor
- Ingle, Joseph Lowrie (1846, Aug. 16-1914, Mar. 20) – doctor
- Ingman, Abner S. (?-1951, April 1) – doctor
- Ingold-Tate, Mattie Barbara (?-?) – doctor
- Ingram, Marie L. (?-1945, Aug. 9) – doctor
- Inloes, Benjamin H. (?-?) – doctor
- Inloes, Henry A. (1844-1870, Jun. 16) – doctor
- Inloes, Henry Augustus (1811, Jan. 4-1874, May 28) – doctor
- Inloes, Joseph (?-?) – doctor
- Inloes, W. F. (?-?) – doctor
- Inman, B. Wallace (?-?) – doctor
- Inman, Conrad L. (?-1980, Dec. 18) – dentist
- Insley, Ethel F. (?-1970, Sep. 23) – nurse
- Insley, J. Knox (?-1963, May 2) – doctor
- Insley, James K. (?-1972) – doctor
- Insley, Philip Asbury (1908-?) – doctor
- Interrante, Nicholas (?-?) – doctor
- Ireland, C. D. (?-?) – doctor
- Ireland, David Campbell (1844, May 4-1901, Jan. 14) – doctor
- Ireland, James (?-?) – doctor
- Ireland, John F. (?-?) – doctor
- Ireton [nee Wolfe], Blanche S. (?-1966, Jun. 29) – nurse
- Irons, Edward Pontney (1824, Oct. 12-1909, Apr. 5) – doctor
- Irons, James (?-?) – medical student
- Isaacs, Benjamin H. (?-1978, Nov. 15) – doctors
- Isaacs, Charles E. (?-?) – doctor
- Isaacs, Chase F. (?-1967, Jun. 2) – midwife
- Isaacs, Mark L. (?-?) – doctor
- Isaacs, Raphael (?-?) – doctor
- Isaacs, Rufus P. (?-1981, Jan. 18) – doctor
- Isles, Susan (?-?) – midwife
- Israel, Ellen (?-1975, Jul. 11) – nurse
- Israel, Mary Anna (?-?) – medical student
- Ives, Nelson (?-?) – Thomsonian practitioner
- Ivins, Harry O. (?-?) – doctor