Directory of Physicians (MD/DO)
- John Kennedy, MD
- John Keno Rivera, MD
- John Kerley, MD
- John Khor, MD
- John Killion, MD
- John Kimball, MD
- John Kirkland, MD
- John Knoth, MD
- John Ko, MD
- John Koenig, MD
- John Krapf, MD
- John Kunzeman, MD
- John LaForge, MD
- John Lane, MD
- John Lasky, MD
- John Lawson, MD
- John Lee, MD
- John-Luke Rivera, MD
- John Madigan, MD
- John Mahon, MD
- John Mallon, MD
- John Mallow, MD
- John Manor, MD
- John Marasco, MD
- John Marxer, MD
- John Mason, MD
- John Mason, MD
- John McAfee, MD
- John McAlhany, MD
- John McElwee, MD
- John McGwire, MD
- John McKeegan, MD
- John McLaughlin, MD
- John McLaughlin, MD
- John McLaughlin, MD
- John Meisenheimer, MD
- John Mele, MD
- John Messinger, MD
- John-Michael Benson, MD
- John Michael Sanchez, MD
- John Michael Sherman, MD
- John Miller, MD
- John Miller, MD
- John Milner, MD
- John Mitchell, MD
- John Moon, MD
- John Moon, MD
- John Morrissey, MD
- John Naselli, MD
- John Nelson Huffman, MD