Directory of Physicians (MD/DO)
- John Klein, MD
- John Klekamp, MD
- John Klekamp, MD
- John Klibanoff, MD
- John Klimkiewicz, MD
- John Kline, MD
- John Kloss, MD
- John Knight, MD
- John Knight, MD
- John Knox, MD
- John Knutson, MD
- John Koerner, MD
- John Kofoed, MD
- John Kona, MD
- John Konkel, MD
- John Kopriva, MD
- John Koski, MD
- John Kosko, MD
- John Kostuik, MD
- John Kosty, MD
- John Kozisek, MD
- John Kragh, MD
- John Krause, MD
- John Krautmann, MD
- John Krebs, MD
- John Kristoferson, MD
- John Kroner, MD
- John Kronick, MD
- John Krumme, MD
- John Kuhn, MD
- John Kung, MD
- John Kunkel, MD
- John Kunkel, MD
- John Kuri, MD
- John Kurylo, MD
- John L'Insalata, MD
- John Labiak, MD
- John Lacart, MD
- John Lake, MD
- John LaMacchia, MD
- John Lamb, MD
- John Lammli, MD
- John Lane, MD
- John Lange, MD
- John Langland, MD
- John Lankenau, MD
- John Lannin, MD
- John Lapkass, MD
- John LaPoint, MD
- John Lavorgna, MD