Directory of Physicians (MD/DO)
- John Joseph, MD
- John Juliano, MD
- John Junsuk Lee, MD
- John Jurgutis, MD
- John Kadzielski, MD
- John Kagan, MD
- John Kao, MD
- John Karbassi, MD
- John Karl, MD
- John Karpie, MD
- John Kastrup, MD
- John Kaufman, MD
- John Kavanaugh, MD
- John Kayvanfar, MD
- John Kean, MD
- John Kearns, MD
- John Keating, MD
- John Keeling, MD
- John Kefalas, MD
- John Keggi, MD
- John Keith, MD
- John Kelbel, MD
- John Kelley, MD
- John Kelley, MD
- John Kelley, MD
- John Kelly, MD
- John Kelly, MD
- John Kelly, MD
- John Kemp, MD
- John Kemppainen, MD
- John Kendrick, MD
- John Kennedy, MD
- John Kennedy, MD
- John Kenzora, MD
- John Keohane, MD
- John Ketz, MD
- John Khoury, MD
- John Kiely, MD
- John Kilgore, MD
- John Killian, MD
- John Killian, MD
- John Kim, MD
- John King, MD
- John King, MD
- John King, MD
- John Kirchner, MD
- John Kirkpatrick, MD
- John Kirsch, MD
- John Kisiel, MD
- John Kleimeyer, MD