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
Iryna Kononenko
Gynecologist-Endocrinologist
Iryna Kononenko is a gynecologist-endocrinologist and reproductive medicine specialist at the Dakhno Institute of Reproductive Medicine in Kyiv. Trained at Bogomolets National Medical University from 1976 through clinical residency, she manages the full IVF cycle pathway — infertility diagnosis, stimulation, egg retrieval and embryo transfer — and holds ESHRE, ASRM and UARM memberships.
Ukraine 
Iryna Smolen, PA-C
Physician Assistant
Iryna Smolen, PA-C is a nationally certified physician assistant on the reproductive endocrinology team at Cleveland Clinic Fertility Center in Beachwood, Ohio, where she works stimulated cycles alongside the center's reproductive endocrinologists. She holds a master's degree in physician assistant studies from Cleveland State University and takes patients in English, Ukrainian, Russian and Polish.
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United States 
Isaac Kligman, M.D.
Professor of Clinical Obstetrics and Gynecology and Clinical Reproductive Medicine, Weill Cornell
Isaac Kligman is a Weill Cornell professor of reproductive medicine known for pioneering work in oocyte vitrification, making egg freezing a reliable option, alongside research on ovarian physiology, ovulation induction and PCOS.
United States 
Isaac E. Sasson, M.D., Ph.D.
Reproductive Endocrinologist
Isaac E. Sasson holds a medical degree and a doctorate in genetics from Yale, trained at Yale-New Haven Hospital and the University of Pennsylvania, and serves as Shady Grove Fertility's Medical Director for Pennsylvania at its Chesterbrook office.
United States 
Isabelle P. Ryan, M.D.
Medical Director, Pacific Fertility Center
Isabelle P. Ryan, MD is the Medical Director of Pacific Fertility Center, the board-certified reproductive endocrinologist who has led the San Francisco practice's clinical team since she joined in 1999. She directs the center's third-party parenting program and its donor egg bank, completed her REI fellowship at UCSF where she pioneered endometriosis research, and has been named a Castle Connolly Top Doctor every year from 2010 through 2026.
United States 
Dr. Emi Ishida
Board-Certified Obstetrician and Gynecologist (Instructor)
Dr. Emi Ishida is an OB/GYN specialist and instructor trained at Nagasaki University and Osaka University's medical graduate school, where her research focused on ovarian and reproductive biology. She provides individualized IVF and infertility care at Oak Clinic Sumiyoshi.
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Japan 
Jackie Ho, MD, MS
Reproductive Endocrinologist
Dr. Jackie Ho ran the Fertility Preservation program as faculty at the University of Southern California before joining Reproductive Partners Medical Group's South Bay campus. She holds a master's in clinical research from USC, published award-winning work on frozen-egg outcomes and noninvasive embryo-quality biomarkers, and is board-certified in both OB/GYN and REI.
United States 
Jacqueline Christine Lee, MD
Medical Doctor
Dr. Jacqueline Lee is a Reproductive Endocrinology & Infertility specialist at Emory Reproductive Center and Assistant Professor at Emory University School of Medicine. She graduated with highest distinction from UNC, trained at Northwestern, and collaborated with the CDC on two AJOG publications. She specializes in infertility and fertility preservation.
United States 
Jacqueline Carla Yano Maher, MD, FACOG
Doctor of Medicine
Jacqueline Maher, MD, FACOG joins HRC Fertility's Pasadena team in October 2026. Johns Hopkins fellowship trained, previously a staff clinician at the NIH's child-health institute and an attending at Children's National Hospital, she works in oncofertility, egg and embryo banking, diminished ovarian reserve and reproductive care for adolescents.
United States 
Jacquelyn Shaw, MD
Assistant Professor, Department of Obstetrics and Gynecology, NYU Langone Health
Dr. Jacquelyn Shaw is a reproductive endocrinologist at NYU Langone Fertility Center, joining the team in 2022. She completed her OB-GYN residency (as Chief Administrative Resident) and REI fellowship at NYU Langone Health, earning her MD from Albert Einstein College of Medicine. Her expertise covers female and male infertility, fertility preservation including egg freezing, recurrent miscarriage, PCOS, IVF, PGT, LGBTQ+ family building, and advanced hysteroscopic and minimally invasive robotic surgery.
United States 
Jaime Knopman, MD
Reproductive Endocrinologist and Infertility Specialist
Dr. Jaime Knopman is a board-certified reproductive endocrinologist at CCRM Fertility of New York and National Director of Fertility Preservation for the CCRM network, with 13 years of clinical experience. She specializes in fertility preservation, oncofertility, IVF, IUI, gestational surrogacy, and LGBTQIA+ family building, and is the author of Own Your Fertility.
United States 
James Graham, M.S., ELD
Embryology Laboratory Director
James Graham is the embryology laboratory director responsible for the IVF labs at Rockville, Towson and Fairfax, and Shady Grove Fertility's Vice President of Laboratory Operations. He is not a treating clinician: he is certified by the American Board of Bioanalysis and holds a master's degree in reproductive physiology, and he runs the laboratories where eggs are fertilized and embryos are cultured and frozen.
United States Showing 517-527 of 963
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