Meet Our Team

Through compassionate, individualized care, utilizing the most advanced fertility treatments available, our reproductive endocrinologists and fertility experts have helped thousands of patients become parents and preserve their future fertility. 

Reproductive Medicine Associates of New York (RMA of New York) serves the Mount Sinai Health System as the Division of Reproductive Endocrinology and Infertility, within the Department of Obstetrics, Gynecology and Reproductive Science. The physicians of RMA of New York have consistently been distinguished as “Top Doctors” by Castle Connolly, named to New York Magazine’s “Best Doctors” list, and recognized by Super Doctors. 

Partners

Alan B. Copperman, MD
Reproductive Endocrinologist

Eric Flisser, MD
Reproductive Endocrinologist

Jovana Lekovich, MD
Reproductive Endocrinologist

Tanmoy Mukherjee, MD
Reproductive Endocrinologist

Beth McAvey, MD
Reproductive Endocrinologist

Daniel E. Stein, MD
Reproductive Endocrinologist

Lucky Sekhon, MD
Reproductive Endocrinologist

Physicians

Matthew A. Lederman, MD
Reproductive Endocrinologist

Kimberley A. Thornton, MD
Reproductive Endocrinologist

Erkan Buyuk, MD
Reproductive Endocrinologist

Jeffrey Klein, MD
Reproductive Endocrinologist

Tia Jackson-Bey, MD
Reproductive Endocrinologist

Taraneh Nazem, MD
Reproductive Endocrinologist

Rachel Gerber, MD
Reproductive Endocrinologist

Jenna Friedenthal, MD
Reproductive Endocrinologist

Devora Aharon, MD
Reproductive Endocrinologist

Rachel B. Danis, MD
Reproductive Endocrinologist

Benjamin Sandler, MD
Reproductive Endocrinologist

Fellows

Chelsea Canon, MD
Reproductive Endocrinologist

Samantha Estevez, MD
Reproductive Endocrinologist

Keri Bergin, MD
Reproductive Endocrinologist

Urologist

Natan Bar-Chama, MD
Urologist

Gynecologic Surgeon

Leigh Rosen, MD
Obstetrician Gynecologist