Directory of U.S. Clinicians
- Ralph Di Giovanni, MD
- Ralph Fishkin, MD
- Randall Powell, Other Healthcare Professional
- Rao Gogineni, MD
- Ravi Kumar, MD
- Raynard Cheung, MD
- Renee McDonough, MD
- Renee McDonough, MD
- Reyan Schroter, PharmD/RPh
- Richard Cornfield, MD
- Richard Gash, MD
- Richard Kluft, MD
- Richard Lowe, Other Healthcare Professional
- Richard Lynn, MD
- Richard Mandel, MD
- Richard Schmidt, MD
- Richard Tipperman, MD
- Richard Watson, MD
- Robert Blair, Other Healthcare Professional
- Robert Garfield, MD
- Robert Handler, MD
- Robert Kleiman, MD
- Robert Pomerantz, Other Healthcare Professional
- Robert Tanenbaum, Other Healthcare Professional
- Robert Weiss, MD
- Robert Ziffer, Other Healthcare Professional
- Roland Kallen, MD
- Roman Pastushak, Other Healthcare Professional
- Ronald Barg, MD
- Ronald Ebert, Other Healthcare Professional
- Ronald Greene, MD
- Ronald Werrin, MD
- Rose Tse, MD
- Roy Eidelson, Other Healthcare Professional
- Ruth Sampson-Pilgrim, NP/CNM/DNP
- Ruth Scholl, MD
- Sally Pearne, Other Healthcare Professional
- Samantha Powell, MD
- Samuel Grodofsky, MD
- Sandra Seveland, PharmD/RPh
- Sanjay Gupta, MD
- Sara Marks Tabby, MD
- Sarah Foster-Chang, NP/CNM/DNP
- Sari Fogel, MD
- Sean Gallagher, MD
- Sean Lincoln, Other Healthcare Professional
- Shana Chung, NP/CNM/DNP
- Sharon Bachman, NP/CNM/DNP
- Sheldon Gross, MD
- Shelley Milestone, Other Healthcare Professional