Directory of Physicians (MD/DO)
- John Lytle, MD
- John MacGillivray, MD
- John Macilwaine, MD
- John MacPhail, MD
- John Macy, MD
- John Magagna, MD
- John Magill, MD
- John Mahajan, MD
- John Mahan, MD
- John Mahon, MD
- John Mahon, MD
- John Mahoney, MD
- John Mahoney, MD
- John Mahoney, MD
- John Malloy, MD
- John Maltry, MD
- John Manfredi, MD
- John Mangan, MD
- John Mangan, MD
- John Mangelson, MD
- John Mangieri, MD
- John Mann, MD
- John Mann, MD
- John Manning, MD
- John Manta, MD
- John Mara, MD
- John Marcel, MD
- John Marcy, MD
- John Marquardt, MD
- John Marsh, MD
- John Martell, MD
- John Martell, MD
- John Martin, MD
- John Martin, MD
- John Martin, MD
- John Martino, MD
- John Marymont, MD
- John Marzo, MD
- John Marzo, MD
- John Masciale, MD
- John Maskill, MD
- John Mason, MD
- John Masonis, MD
- John Masterson, MD
- John Mathewson, MD
- John Matthews, MD
- John Mattson, MD
- John Maurer, MD
- John Mays, MD
- John Mazur, MD