Team of Physicians

Reproductive Medicine Associates of New York has enabled thousands of couples to successfully conceive by performing some of the most advanced fertility treatments available. Our physicians are board-certified in reproductive endocrinology and infertility, and treat patients with compassion and individualized care to make their dreams of becoming a parent a realistic opportunity.

 RMA of New York Founding Partners

Reproductive Endocrinologists Alan Copperman, MD, Lawrence Grunfeld, MD, Tanmoy Mukherjee, MD, and Benjamin Sandler, MD,  are among the founding partners of RMA of New York, and have treated thousands of patients from around the world.

Alan_Copperman Lawrence_Grunfeld Tanmoy-Mukherjee Benjamin-Sandler
Alan Copperman, MD Lawrence Grunfeld, MD Tanmoy Mukherjee, MD Benjamin Sandler, MD

 RMA of New York Physicians

Reproductive Endocrinologists Daniel E. Stein, MD, Eric Flisser, MD, Joseph B. Davis, DO, Jeffrey Klein, MD, Rashmi Kudesia, MD, Matthew A. Lederman, MD, Beth McAvey, MD, and Kimberley A. Thornton, MD have received their training from the top medical colleges among the nation, and have brought joy to numerous couples in their family-building journey.

DrStein Eric_Flisser
Daniel E. Stein, MD Eric Flisser, MD Joseph B. Davis, DO
Jeff-Klein Rashmi Kudesia - Suit DrLederman
Jeffrey Klein, MD Rashmi Kudesia, MD Matthew A. Lederman, MD KThorntonMD
Beth McAvey, MD Kimberley A. Thornton, MD Jovana Lekovich, MD

RMA of New York Physicians – International

Martha Luna, MD, serves as the Co-Director of RMA of New York International.  She and her team of specialists serve patients seeking treatment for infertility that live in proximity to our office in Mexico City.

Martha Luna, MD

Enrique Cervantes, MD is a graduate of the multi-disciplinary program in Obstetrics and Gynecology at the Institute of Technology and Superior Studies of Monterrey (ITESM). He completed his Reproductive Endocrinology and Infertility fellowship at Reproductive Medicine Associates of New York (RMANY) under the mentorship of Dr. Benjamin Sandler.

Enrique Cervantes, MD

RMA of New York Urologist (Male Infertility Specialist)

Male Reproductive Urologist, Natan Bar-Chama, MD, serves as the Director of our on-site Center for Male Reproductive Health.  Dr. Bar-Chama works in conjunction with his team to treat patients for various male factor conditions, including male infertility, erectile dysfunction and voluntary sterilization (vasectomy). Dr. Bar-Chama is especially experienced in microsurgical repair procedures, including vasectomy reversal (vasovasostomies), microsurgical open testicular sperm retrieval, and microsurgical varicocelectomy.

Natan Bar Chama, MD


CNN News: US Fertility Rate Hits a Record Low Dr Alan Copperman speaks with CNN on the decline and the importance of early education to women on their family building options. View article here. ...READ MORE


Preimplantation Genetic Screening of Embryos in Patients with Recurrent Pregnancy Loss Miscarriages can be emotionally and physically challenging for both women and couples. Recurrent pregnancy loss, which is defined by the American Society of Reproductive Medicine as two or more failed clinical pregnancies, can be devastating. ...READ MORE

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