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Leading Specialists in United States
Reproductive specialists in United States
Ketan S. Patel, MD
Co-Medical Director
Dr. Ketan S. Patel is the Co-Medical Director of CCRM Fertility of Arizona (formerly ACFS), with 23 years of clinical experience. He founded Arizona Associates for Reproductive Health in 2005, merged with ACFS in 2021, and joined the CCRM Fertility Network in 2024. He previously served as Medical Director for Reproductive Endocrinology and Infertility at the Mayo Clinic, and has been named a Phoenix Magazine Top Doctor for 20 consecutive years.
United States 
Kevin Winslow, MD
Reproductive Endocrinologist
Dr. Kevin Winslow founded the Florida Institute for Reproductive Medicine and has run it as medical director for more than 21 years, with 36-plus years of clinical practice in IVF and fertility preservation across North Florida and South Georgia.
United States 
Khaled Zeitoun, MD, FACOG
Board-Certified Reproductive Endocrinologist
Dr. Khaled Zeitoun is a double board-certified reproductive endocrinologist at New Hope Fertility Center in New York and one of the few REI specialists trained in major gynecologic surgery. He holds active New York and Texas licenses, operates on fibroids, endometriosis and tubal disease, and consults in English and Arabic.
United States 
Kim Thornton, MD
Reproductive Endocrinologist
Dr. Kim Thornton leads REI at Beth Israel Deaconess, sits on the ASRM board since 2022, co-authored the landmark 2019 study of IVF outcomes in transgender men, and serves on ASRM's diversity and inclusion task force.
United States 
Kimberly W. Keefe Smith, MD
Reproductive Endocrinologist
Dr. Kimberly W. Keefe Smith trained on both sides of Boston's rivalry in reproductive medicine — Massachusetts General Hospital and Brigham and Women's Hospital — with OB/GYN residency at Yale New Haven Hospital and board certification in 2018. She practices general reproductive endocrinology and infertility at the Center for Infertility and Reproductive Surgery.
United States 
Kristen Adams, PA-C, CM
Physician Assistant
Kristen Adams, PA-C is the physician assistant on staff at Boston IVF's South Portland, Maine center, where she sees patients for fertility consultations, health assessments and individualized treatment planning alongside the center's reproductive endocrinologist. She also consults by telehealth with patients anywhere in Maine.
United States 
Kristin Van Heertum, MD
Reproductive Endocrinologist
Kristin Van Heertum, MD studied neuroscience at Columbia University before medicine. Double board-certified in OB/GYN and reproductive endocrinology and infertility, she covers IVF, fertility surgery, PCOS, egg freezing, recurrent pregnancy loss and LGBTQ+ family building from the Nashville and Clarksville offices.
United States 
Kurt T. Barnhart, MD, MSCE
Reproductive Endocrinologist
Kurt Barnhart runs NIH-funded multicenter trials on infertility diagnosis and assisted reproduction, holds joint appointments in obstetrics and gynecology and epidemiology, and helped write the 2025 International Glossary on Infertility and Fertility Care. He is the William Shippen, Jr. Professor at Penn and directs its center for research in reproduction and women's health.
United States 
Laura April Gago, MD
Reproductive Endocrinologist and Infertility Specialist
Dr. Laura April Gago founded Gago Center for Fertility in Brighton, Michigan in 2007 and is its medical director on the clinic's SART and CDC registrations. Before that she ran the University of Michigan IVF program, where she built its fertility preservation and donor oocyte programs. She sees patients at Brighton, Lansing and Ann Arbor, and founded Laura's Hope, a nonprofit granting fertility treatment funds after pregnancy loss.
United States 
Laura Eisman, M.D.
Reproductive Endocrinologist
Laura Eisman trained in obstetrics and gynecology at Abington Hospital-Jefferson Health in Pennsylvania and took her reproductive endocrinology fellowship at Cedars-Sinai in Los Angeles. She is double board-certified and lists uterine factor infertility, fertility preservation and LGBTQIA+ care as her focus, seeing patients at San Ramon and Oakland.
United States 
Laura Josephs, Ph.D.
Consulting Psychologist
Laura Josephs is the consulting psychologist at Weill Cornell's fertility center: she screens the egg donors, runs individual and marital therapy for IVF and donor-egg patients, leads a women's support group, and founded NewYork-Presbyterian's Ob/Gyn-Psych consultation clinic.
United States 
Laura Londra, M.D.
Reproductive Endocrinology & Infertility Specialist
Dr. Laura Londra is a dual board-certified REI and OB-GYN specialist at Ohio Reproductive Medicine. She completed her fellowship at Johns Hopkins University and has been named Castle Connolly Top Doctor for Reproductive Endocrinology in 2020 and 2021. Fluent in English and Spanish.
United States Showing 373-383 of 612
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