Directory of Physicians (MD/DO)
- William Riordan, MD
- William Risinger, MD
- William Ritt, MD
- William Rizk, MD
- William Rockett, MD
- William Rodman, MD
- William Rodriguez, MD
- William Roush, MD
- William Royster, MD
- William Rucker, MD
- William Rupp, MD
- William Rush, MD
- William Sachs, MD
- William Sadler, MD
- William Sawyer, MD
- William Saxbe, MD
- William Scharf, MD
- William Schecter, MD
- William Scheidt, MD
- William Schirmer, MD
- William Schu, MD
- William Schuchardt, MD
- William Schulman, MD
- William Sclar, MD
- William Scofield, MD
- William Scott, MD
- William Segel, MD
- William Shanahan, MD
- William Shaw, MD
- William Shen, MD
- William Shepard, MD
- William Sherman, MD
- William Sherman, MD
- William Sherrill, MD
- William Shillinglaw, MD
- William Silliman, MD
- William Sims, MD
- William Sindelar, MD
- William Sippo, MD
- William Sisson, MD
- William Slater, MD
- William Smith, MD
- William Sobat, MD
- William Soper, MD
- William Sorrell, MD
- William Spencer, MD
- William Spires, MD
- William Squires, MD
- William Statton, MD
- William Steinhardt, MD