Leading IVF Doctors & Specialists
Find the right reproductive specialist
Leading IVF Doctors & Specialists · Inclusion criteria: listed specialists practice at credential-verified, accredited fertility centers. Education, board certification (e.g., ABOG, reproductive endocrinology & infertility fellowship) and years of experience are verified against official hospital records and public licensure registries; patient reviews are manually verified before publication. How we verify doctors
Dr. Ryh-Sheng Li
Director of Fertility Research
Dr. Ryh-Sheng Li is Director of Fertility Research at NUWA Fertility Center Taipei. He trained at the College of Medicine, Taipei Medical University, then worked through resident physician, research physician and attending physician grades in the infertility department of Mackay Memorial Hospital, followed by attending physician at Stork Fertility Center. The clinic names his focus as infertility treatment, IVF, IUI, egg and sperm freezing, donor eggs and sperm, recurrent miscarriage, reproductive autoimmune evaluation and premature ovarian insufficiency.
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Taiwan, China 
Dr. Ryosuke Akino
Doctor of Medicine
Dr. Ryosuke Akino is an adjunct physician at Kato Ladies Clinic in Shinjuku, Tokyo, on its minimal-stimulation and natural-cycle IVF team. A Showa University graduate with experience at the National Center for Child Health and Development, he holds JSOG specialist and instructor certification and endoscopic surgery accreditation, and returned to KLC in 2025.
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Japan 
Dr. Sachie Onogi
Doctor of Medicine
Dr. Sachie Onogi is an adjunct physician at Kato Ladies Clinic in Shinjuku, Tokyo, on its minimal-stimulation and natural-cycle IVF team since 2018. After a science degree at Osaka University and medical training at Okayama University, she completed the obstetrics residency ladder at St. Luke's International Hospital and holds certifications in reproductive medicine and women's health.
Japan 
Saengdaw Khamchorn
Embryology Laboratory Manager
Saengdaw Khamchorn is the Embryology Laboratory Manager at Deep & Harmonicare IVF Center in Bangkok and an ESHRE-certified clinical embryologist with more than 15 years of laboratory experience. She specializes in oocyte in vitro maturation, vitrification and preimplantation genetic diagnosis, and holds certifications from TSRM and ATE.
Thailand 
Sahar M. Stephens, MD
Reproductive Endocrinologist
Sahar M. Stephens, MD is a double board-certified reproductive endocrinologist at Northern California Fertility Medical Center in Sacramento. Trained at Washington University and Colorado Denver, she was Administrative Chief Resident, won an Excellence in Laparoscopy award, and lists laparoscopic, hysteroscopic and robotic-assisted reproductive surgery among her clinical interests.
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United States 
Sahar Wertheimer, MD
Reproductive Endocrinologist
Sahar Wertheimer is a double board-certified reproductive endocrinologist at HRC Fertility Beverly Hills. She chairs the Women's Health Committee of the Jewish Orthodox Women's Medical Association, researches placental epigenetics and PCOS, and hosts a women's-health webinar reaching thousands.
United States 
Samantha M. Pfeifer, M.D.
Reproductive Endocrinologist
Samantha Pfeifer led the ASRM Müllerian Anomalies Classification 2021 as its lead author — the system that now defines how uterine malformations are diagnosed worldwide. She brings that surgical specialty to Weill Cornell's CRM alongside IVF, ovulation induction and egg freezing.
United States 
Dr. Samantha Beth Schon, MD
Assistant Professor, Obstetrics and Gynecology
Dr. Samantha Schon is an Assistant Professor of Obstetrics and Gynecology at the University of Michigan with board certifications in three fields at once: OB/GYN, Reproductive Endocrinology and Infertility, and Obesity Medicine.
United States 
Machiko Sameshima
Senior Embryologist
Machiko Sameshima is the senior embryologist at Hanaoka IVF Clinic (Shinagawa), a core member of the culture room team handling embryo culture, vitrification and laboratory quality. She qualified to work with oocytes through the clinic's rigorous daily-training and competency-assessment system.
Japan 
Dr. Samuel J. Chantilis, MD
Medical Director, Dallas-Fort Worth Fertility Associates
Dr. Samuel J. Chantilis founded Dallas-Fort Worth Fertility Associates in 1999 and serves as its medical director. He is board-certified in reproductive endocrinology and infertility, has more than 30 years of clinical experience, and reports approximately 2,500 egg retrievals and more than 500 donor egg cases. He leads the practice's donor egg and third-party reproduction program at the Glen Lakes office in Dallas.
United States 
Samuel Ohlander, M.D.
Board-Certified Urologist
Dr. Samuel Ohlander is the urologist on Fertility Centers of Illinois' clinical team, board-certified in Urology with a fellowship in male reproductive medicine and surgery at Baylor College of Medicine. He treats male infertility, low testosterone and varicocele, performs microsurgical vasectomy reversal, and co-wrote the male infertility chapter in Campbell's Urology, Infertility in the Male.
United States 
Samuel Pang, MD
Reproductive Endocrinologist
Dr. Samuel Pang leads Boston IVF's donor egg and gestational carrier program and won the 2022 ASRM Arnold P. Gold Humanism in Medicine award. He is not currently accepting new patients. His two sons were conceived through IVF.
United States Showing 817-827 of 963
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