Jonathan Elmer (Pro-Admin-NJ)
Service Years: 1789-1791

William Bradford (Pro-Admin/F-RI)
Service Years:  1793-1797

Henry Latimer (F-DE)
Service Years:  1795-1801

Joshua Clayton (F-DE)
Service Years:  1798

George Logan (R-PA)**
Service Years:  1801-1807

John Condit (R-NJ)
Service Years:  1803-1817

Samuel Latham Mitchill (R-NY)
Service Years:  1804-1809

George Jones (R-GA)
Service Years:  1807

Edward Tiffin (R-OH)
Service Years:  1807-1809

Alexander Campbell (R-OH)
Service Years:  1809-1813

Michael Leib (R-PA)
Service Years:  1809-1814

William Hunter (F-RI)*
Service Years:  1811-1821

William Wyatt Bibb (R-GA)
Service Years:  1813-1816

Clement Storer (R-NH)
Service Years:  1817-1819

David L. Morril (R-NH)
Service Years:  1817-1823

William Pinkney (R-MD) **
Service Years:  1819-1822

Nicholas Ware (R/CRR-GA) *
Service Years:  1821-1824

Henry H. Chambers (J-AL)
Service Years:  1825-1826

William Henry Harrison (Adams-OH) **
Service Years:  1825-1828

William Harper (J-SC) *
Service Years:  1826

Ephraim Bateman (Adams-NJ)
Service Years:  1826-1829

Arnold Naudain (AJ-DE)
Service Years:  1830-1836

Joseph Kent (AJ/W-MD)
Service Years:  1833-1837

Lewis Fields Linn (J/D-MO)
Service Years:  1833-1843

John Selby Spence (Anti-Jackson/W-MD)
Service Years: 1836-1840

Daniel Sturgeon (D-PA)
Service Years:  1840-1851

Solon Borland (D-AR)
Service Years:  1848-1853

William M. Gwin (D-CA)
Service Years:  1850-1855, 1857-1861

Benjamin F. Wade (W/OP/R-OH) *
Service Years:  1851-1869

Amos Nourse (R-ME)
Service Years:  1857

Martin Waltham Bates (D-DE) *
Service Years:  1857-1859

Graham Newell Fitch (D-IN)
Service Years:  1857-1861

Charles Burton Mitchel (D-AR)
Service Years:  1861

Edgar Cowan (R-PA) *
Service Years:  1861-1867

Homer Virgil Milton Miller (D-GA)
Service Years:  1871

Simon Barkley Conover (R-FL)
Service Years:  1873-1879

George Robertson Dennis (D-MD)
Service Years:  1873-1879

Robert Enoch Withers (D-VA)
Service Years: 1875-1881

George Miles Chilcott (R-CO) **
Service Years:  1882-1883

Jacob Harold Gallinger (R-NH)
Service Years:  1891-1918

William Joseph Deboe (R-KY)
Service Years:  1897-1903

Lewis Heisler Ball (R-DE)
Service Years:  1903-1905, 1919-1925

Harry Lane (D-OR)
Service Years:  1913-1917

Joseph Irvin France (R-MD)
Service Years:  1917-1923

Royal S. Copeland (D-NY)
Service Years:  1923-1938

Woodbridge Nathan Ferris (D-MI)
Service Years: 1923-1928

Henry D. Hatfield (R-WV)
Service Years:  1929-1935

Ernest Gruening (D-AK) **
Service Years:  1959-1969

William H. Frist (R-TN)
Service Years:  1995-2007

Thomas A. Coburn (R-OK)
Service Years: 2005-

John Barrasso (R-WY)
Service Years: 2007-

-------------------------------------------------------------------------

Total: 51

   * Studied medicine and law; practiced law.

   ** Studied medicine but did not practice.

-------------------------------------------------------------------------

Key to Political Party Abbreviations

-------------------------------------------------------------------------

Source: U.S., Congress, Senate, Biographical Directory of the United States Congress.

-------------------------------------------------------------------------