Directory of Physicians (MD/DO)
- John Romano, MD
- John Roth, MD
- John Rower, MD
- John Rupp, MD
- John Schlicher, MD
- John Schmelzer, MD
- John Schmidt, MD
- John Schultz, MD
- John Secrist, MD
- John Selby, MD
- John Seykora, MD
- John Shega, MD
- John Shen, MD
- John Sherrod, MD
- John Short, MD
- John Siebenlist, MD
- John Skouge, MD
- John Snow, MD
- John Soderberg, MD
- John Southard, MD
- John Sowell, MD
- John Stanley, MD
- John Starling, MD
- John Stathakis, MD
- John Steinbaugh, MD
- John Stephens, MD
- John Stewart, MD
- John Stoner, MD
- John Stoner, MD
- John Strasswimmer, MD
- John Streidl, MD
- John Strickler, MD
- John Strickley, MD
- John Stubblefield, MD
- John Surratt, MD
- John Thacher, MD
- John Tieman, MD
- John Tomich, MD
- John Toole, MD
- John Trafeli, MD
- John Trinidad, MD
- John Troccoli, MD
- John Valentic, MD
- John Vanloock, MD
- John Vine, MD
- John Voorhees, MD
- John Vu, MD
- John Walczyk, MD
- John Walsh, MD
- John Watson, MD