Our Doctors

Your Providers


dr. zaher merhi

Md, facog, hcld

Medical Director, CEO, Founder

Dr. Merhi is the founder and the medical director of Rejuvenating Fertility Center (RFC). He is an internationally recognized fertility doctor, lecturer, editor, and grant reviewer. His training and faculty appointments included Albert Einstein College of Medicine, NYU School of Medicine, and University of Vermont. He is currently a Professor at SUNY Downstate University. He has three American Board certifications in OB/GYN, Reproductive Endocrinology and Infertility, and High-Complexity Laboratory Director (HCLD).

Dr Merhi is an active researcher with an interest in women with Low Ovarian Reserve (low AMH or high FSH), ovarian rejuvenation, gentle stimulation IVF, natural IVF, and IVF without injectables. His research also focuses on technologies, such as Ozone Sauna, that could improve egg quality. Dr. Merhi is also experienced in treating overweight women and those who had weight loss surgery. He is a strong proponent of the LGBTQ community and has proudly served the Jewish Community for over a decade.

Dr Merhi was awarded Best OBGYN Doctor 2020 by New York magazine and received a Star Award from the American Society for Reproductive Medicine (ASRM). He has published over 80 manuscripts and book chapters and he continues to present his research at national and international scientific conferences. He serves as a Chair, on several committees such as the ASRM, New England Fertility Society, Society for Reproductive Investigation (SRI), and Endocrine Society.

Various media outlets have reported on his research including N.Y. Times, Washington Post, CNN, MSNBC, ABC News, NY Post, PopSugar, Glamour, POOSH, Medscape, Fox News, Hollywood Life, Mom Brain, InStyle, Parade Online, The Strategist, Healthline, Women’s Health, The List, Daily Mail, Best Life, and Allure. He uses his extensive research background to provide the most up-to-date medical advances in infertility treatments to his patients.

Dr. Merhi fluently speaks English, French, and Arabic.

Melvin H. Thornton


Director of Third Party Reproduction

Dr. Melvin H. Thornton, II is recognized as one of the world’s leading experts in egg donation and surrogacy. He is double board certified in Reproductive Endocrinology and Infertility as well as Obstetrics and Gynecology. Dr. Thornton received his medical degree from Washington University in St. Louis, completed his internship and residency at the University of Southern California, and received additional training in advanced reproductive surgery at The Cleveland Clinic. He joined the faculty at Columbia University where he served as Medical Director and Director of the Egg Donation Program at the Center for Women’s Reproductive Care (CWRC).

Dr. Thornton has been helping families achieve their dreams of having children for over 20 years. Dr. Thornton has published more than 50 papers, written several book chapters, and presented over 100 abstracts at national conferences on topics related to infertility, third party reproduction, and women’s health. He has distinguished himself through his extensive research in the treatment of HIV sero-discordant couples and the relationship to infertility and fertility treatment.

He is an active member of the ACGME Clinical Competency Committee for Obstetric and Gynecology at Columbia and currently sits on the ASRM Education Committee. He is a Castle Connolly Regional Top Doctor, and was awarded the Top Doctors New York Metro Area Award in 2017, 2018, 2019, and 2020.


Dr. Marco Mouanness


Dr. Marco graduated his medical degree with high distinction. He completed his Obstetrics and Gynecology residency at the American University of Beirut Medical Center after which he spent time in NYC mastering Gentle IVF under the supervision of Dr Merhi.

He received multiple awards for academic achievements and teaching and presented in several international conferences. He also published in multiple laparoscopic, urogynecological and obstetrical journals, and served as a reviewer for several medical journals.

His clinical research interests include but are not limited to treatments for patients with low ovarian reserve, ovarian rejuvenation, recurrent implantation failures, fertility preservation and polycystic ovarian syndrome.

He believes that individualized care is the key to the success of fertility treatments.

He is fluent in English, French and Arabic and can speak basic Spanish.

Dr Latisha Moreta


Dr. Latisha Moreta graduated from Cornell University, where she received her Bachelor of Arts in Spanish. She received her medical degree from Georgetown University School of Medicine and completed her Obstetrics and Gynecology residency at Mount Sinai West/Morningside. While in residency, she had several poster presentations accepted at the annual meeting of the American Society for Reproductive Medicine, Diabetes in Pregnancy Study Group of North America, and Pelvic Floor Disorders Week sponsored by the American Urogynecologic Society.  Dr. Moreta is currently completing a Medical Genetics Fellowship at the Icahn School of Medicine at Mount Sinai. Her clinical interests include effects of genetics on infertility, low ovarian reserve, fertility preservation, patient advocacy, and access to reproductive health care. She has advanced proficiency in Spanish.

Dr Hadi Ramadan


Dr Hadi Ramadan joined the RFC/SUNY Downstate University fellowship program on July 1st, 2021 as the first-year fellow. He graduated from AUB where he received his Bachelor of Science in Biology and his Medical Degree. He spent two years as a research fellow at the University of Chicago. He then completed his Obstetrics and Gynecology residency at the Eastern Virginia Medical School (EVMS) where he received several academic and teaching awards including the REI, Research, and American Association of Gynecological Laparoscopists (AAGL) awards, and was inducted into the Alpha Omega Alpha Society in recognition of his academic excellence. He continued to publish and had several presentations at the American Society for Reproductive Medicine (ASRM) and the AAGL.