Directory of Physicians (MD/DO)
- John Klement, MD
- John Koulos, MD
- John Krstacic, MD
- John Krumenacker, MD
- John Kulesa, MD
- John Kurek, MD
- John Laloudakis, MD
- John Lantis, MD
- John Lantos, MD
- John Larsen, MD
- John Lee, MD
- John Leonard, MD
- John Levine, MD
- John Loeb, MD
- John Loh, MD
- John Lombardo, MD
- John Loomis, MD
- John Lorenz, MD
- John Lui, MD
- John Lupiano, MD
- John Lyden, MD
- John Lyden, MD
- John Lyo, MD
- John Mac Kenzie, MD
- John MacDonald, MD
- John MacGillivray, MD
- John Mageean, MD
- John Mancini, MD
- John Mariani, MD
- John Markowitz, MD
- John Marshall, MD
- John Martignetti, MD
- John Martinez, MD
- John Martins, MD
- John Masterson, MD
- John Mastrobattista, MD
- John Matthews, MD
- John Mccabe, MD
- John McCarthy, MD
- John Mccartie, MD
- John McClaskey, MD
- John McDermott, MD
- John Mcknight, MD
- John Medamana, MD
- John Meer, MD
- John Mendiola, MD
- John Mercer, MD
- John Merriam, MD
- John Michalisin, MD
- John Migotsky, MD