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Leading Specialists in United States
Reproductive specialists in United States
Mohammed Naji, MD
Anesthesiologist
Dr. Mohammed Naji is the anesthesiologist on AFMC's team, covering egg retrieval and other IVF procedures. Board-certified in anesthesiology with more than 20 years of practice, he also serves San Dimas Community Hospital and AHMC Anaheim Regional Medical Center and accepts major insurance including Medicare Blue Cross.
United States 
Dr. Monica Best
Reproductive Endocrinologist
Dr. Monica Best is a reproductive endocrinologist at Reproductive Biology Associates (RBA), which she joined in 2013. She practices at the Marietta and Canton locations. A Fulbright Scholar who conducted research at the University of Pisa, she completed her REI fellowship at Emory University School of Medicine and has been voted a 'Mom Approved Fertility Specialist' by Parents Magazine readers.
United States 
Nancy A. Klein, MD
Reproductive Endocrinologist
Dr. Nancy Klein co-founded Seattle Reproductive Medicine in 2004 — the practice now operating as Pinnacle Fertility Seattle — and serves as its IVF medical director. With more than 25 years in reproductive medicine, she focuses on donor eggs, ovulation induction and age-related infertility, and has NIH-funded research on female reproductive aging.
United States 
Natan Bar-Chama, MD
Reproductive Urologist
Natan Bar-Chama, MD, is a board-certified reproductive urologist and has been the Director of the Center for Male Reproductive Health at RMA of New York for 20 years. His clinical and surgical practice is exclusively dedicated to male infertility. He has served as president of both the Society for Male Reproduction and Urology (SMRU) and the Society for the Study of Male Reproduction (SSMR), and received an NIH RO1 research grant.
United States 
Dr. Nathaniel Zoneraich, MD
Medical Director
Nathaniel Zoneraich, MD came to Arizona in 2005 and founded Advanced Fertility Care, which became a founding clinic of Pinnacle Fertility in 2021. His site title is Medical Director, and he serves as the network's Chief Medical Information Officer. He is board-certified in obstetrics and gynecology and sees patients in both Arizona and New York City.
United States 
Nina Vyas MD, FACOG
OB-GYN
Dr. Nina Vyas is an OB-GYN and reproductive endocrinologist at Pinnacle Fertility Los Angeles (formerly California Fertility Partners). She trained at UCLA and Weill Cornell, has authored nine peer-reviewed publications, was named a Super Doctors Southern California Rising Star 2025, and practices in English and Spanish.
United States 
Paolo Rinaudo, MD, PhD
Fertility Specialist
UCSF professor and Associate Editor of Fertility and Sterility with NIH-funded research on embryo development before implantation. Treats infertility, recurrent pregnancy loss, menopause and hormonal disorders; consults in English and Italian.
United States 
Paul C. Lin, MD
Reproductive Endocrinologist
Dr. Paul Lin is a reproductive endocrinologist and reproductive surgeon who co-founded Seattle Reproductive Medicine in 2004. He serves as president of SART — the body that sets US assisted-reproduction reporting standards — sits on the ASRM board, and performs laparoscopic and robotic surgery for fibroids, endometriosis and tubal disease.
United States 
Phillip A. Romanski, MD
Reproductive Endocrinologist
Phillip Romanski, MD, MSc, is a reproductive endocrinologist at RMA of New York East Side and the Associate Research Director for US Fertility. Trained at Harvard Medical School (Brigham and Women's/Massachusetts General) and Weill Cornell, he specializes in female and male infertility, third-party reproduction, fertility preservation (egg freezing), and treatment for patients with diminished ovarian reserve or prior unsuccessful treatment.
United States 
Rafif Z. Moussa, MD
Medical Director
Dr. Rafif Z. Moussa is AFMC's Medical Director, trained at the Jones Institute under Dr. Howard Jones, the pioneer of American IVF. She handles IVF, IUI, ICSI and PGD, hysteroscopic and laparoscopic surgery, and teaches reproductive clinical sciences at Eastern Virginia Medical School.
United States 
Rink Murray, MD
Reproductive Endocrinology and Infertility Specialist
Dr. Rink Murray is co-founder of Tennessee Reproductive Medicine, double board-certified in REI and OB/GYN. A graduate of UT Health Science Center College of Medicine with residency and fellowship at UNC Chapel Hill, he has been named a "Best Doctor in America" every year since 2006. His personal experience with infertility gives him unique empathy for his patients.
United States 
Dr. Robert Straub
Reproductive Endocrinologist
Dr. Robert Straub is a reproductive endocrinologist at Reproductive Biology Associates (RBA), which he joined in August 2003. He practices at the Cumming and Sandy Springs locations. He earned his medical degree from New York University and completed his REI fellowship at Cornell University's Center for Reproductive Medicine under the direction of the internationally renowned Zev Rosenwaks, M.D.
United States Showing 205-215 of 612
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