Directory of Physicians (MD/DO)
- John O'Brien, MD
- John Obi, MD
- John Oeltjen, MD
- John Oliphant, MD
- John Olsen, MD
- John Osborn, MD
- John Paletta, MD
- John Papaila, MD
- John Paro, MD
- John Pate, MD
- John Paul Tutela, MD
- John paul Tutela, MD
- John Pav, MD
- John Payne, MD
- John Perrotti, MD
- John Persing, MD
- John Persing, MD
- John Pierce, MD
- John Pierce, MD
- John Pinnella, MD
- John Pitman, MD
- John Pokorny, MD
- John Porcaro, MD
- John Poser, MD
- John Potochny, MD
- John Potochny, MD
- John Pulcini, MD
- John Quinn, MD
- John Ratino, MD
- John Regan, MD
- John Reichel, MD
- John Reilly, MD
- John Rempel, MD
- John Renucci, MD
- John Ritrosky, MD
- John Roach, MD
- John Roberts, MD
- John Robinson, MD
- John Robinson, MD
- John Roff, MD
- John Romano, MD
- John Rosdeutscher, MD
- John Roussalis, MD
- John Rowley, MD
- John Rusca, MD
- John Russin, MD
- John Samas, MD
- John Sarbak, MD
- John Schantz, MD
- John Seaberg, MD