Directory of Physicians (MD/DO)
- John Keku, MD
- John Kempen, MD
- John Kennedy, MD
- John Kheir, MD
- John Koenig, MD
- John Koreth, MD
- John Kowalczyk, MD
- John Kulka, MD
- John Lamont, MD
- John Lee, MD
- John Levine, MD
- John Levinson, MD
- John Li, MD
- John Libertino, MD
- John Lowry, MD
- John Luckoski, MD
- John Luckoski, MD
- John Lysack, MD
- John Maldonado Pacheco, MD
- John Manis, MD
- John Mannick, MD
- John Markis, MD
- John Markley, MD
- John Marota, MD
- John Matthews, MD
- John Mayer, MD
- John Mayfield, MD
- John Mazzocco, MD
- John McLaren, MD
- John Mcmanama, MD
- John McWilliams, MD
- John Meara, MD
- John Michael Castillo, MD
- John Mignano, MD
- John Mikhael, MD
- John Miller, MD
- John Mills, MD
- John Misasi, MD
- John Monahan, MD
- John Mooney, MD
- John Morrissey, MD
- John Morrissey, MD
- John Moyer, MD
- John Moyer, MD
- John Mullen, MD
- John Mulliken, MD
- John Munzenrider, MD
- John Murphy, MD
- John Nadai, MD
- John Nagurney, MD