'%20d='m0%200%2016%2011h61%2061%2061%2061%2060L47%2037h61%2061%2060%2061L16%2063h61%2061%2061%2061%2060L47%2089h61%2061%2060%2061L16%20115h61%2061%2061%2061%2060L47%20141h61%2061%2060%2061L16%20166h61%2061%2061%2061%2060L47%20192h61%2061%2060%2061L16%20218h61%2061%2061%2061%2060z'/%3e%3c/svg%3e)
Leading Specialists in United States
Reproductive specialists in United States
Janis H. Fox, MD
Reproductive Endocrinologist
Dr. Janis H. Fox covers the third-party reproduction side of Brigham and Women's fertility program: donor egg and gestational carrier cycles, alongside male factor infertility, PCOS and LGBTQ+ family building. She trained at Mount Sinai and Yale rather than in Boston, and practices in Boston since 1990.
United States 
Jasmine Chiang, MD, FACOG
Reproductive Endocrinologist
Reproductive endocrinologist at Conceptions and the medical director named on its SART 2023 clinic report. Cornell, Tufts, Maine Medical Center, UAB fellowship.
United States 
Jaunice Scopelliti Cottone
Physician Assistant - Endocrinology
An endocrinology and OB/GYN physician assistant at Duke Fertility Center who has been through infertility herself. Currently not accepting new patients.
United States 
Jeanne E. O'Brien, M.D.
Reproductive Endocrinologist
Dr. Jeanne E. O'Brien is medical director of the ambulatory surgery center at Shady Grove Fertility's Rockville headquarters, where she is responsible for the care delivered in that suite. Northwestern-trained, with a master's degree in clinical investigation, she has been named a top doctor by Castle Connolly, Washingtonian and Bethesda Magazine.
United States 
Jeffrey Goldberg, MD
Reproductive Endocrinologist
Dr. Jeffrey Goldberg is a reproductive endocrinologist at Cleveland Clinic Fertility Center in Beachwood, Ohio, with more than 40 years in clinical practice. He completed his REI fellowship at The Ohio State University Wexner Medical Center in 1989 after residency at Emory University Hospital and a medical degree at New Jersey Medical School, and is board-certified by the ABOG in obstetrics and gynecology and in reproductive endocrinology and infertility.
United States 
Jenna Rehmer, MD
Reproductive Endocrinology and Infertility Physician
Dr. Jenna Rehmer is the quality and safety director at Cleveland Clinic Fertility Center in Beachwood, Ohio, and a reproductive endocrinology physician at the same center where she completed her REI fellowship in 2021. She earned her medical degree at the University of Missouri and trained in obstetrics and gynecology at the University of Nebraska Medical Center, and holds ABOG certification in obstetrics and gynecology.
United States 
Jenna M. Turocy
Reproductive Endocrinologist
Dr. Jenna M. Turocy is an assistant professor of obstetrics and gynecology at Columbia University Fertility Center in Manhattan, where her practice centers on early and recurrent pregnancy loss alongside IVF and reproductive endocrinology. She trained at Brigham and Women's Hospital and Columbia University Irving Medical Center, and took an American Society for Reproductive Medicine scientific paper award in 2021.
United States 
Jennifer Blakemore, MD, MSc
Assistant Professor, Department of Obstetrics and Gynecology, NYU Langone Health
Dr. Jennifer Blakemore is a reproductive endocrinologist at NYU Langone Fertility Center and Assistant Professor of Obstetrics and Gynecology at NYU Langone Health. She joined the center in 2020 after completing her OB-GYN residency (as Chief Administrative Resident) and REI fellowship at NYU Langone. Her expertise covers female and male infertility, fertility preservation for cancer patients, egg freezing, recurrent miscarriage, LGBTQ+ family building, and oocyte donation.
United States 
Dr. Jennifer Chae-Kim, MD
Reproductive Endocrinologist
Dr. Jennifer Chae-Kim joined Dallas-Fort Worth Fertility Associates' Plano office in November 2025 after fellowship training in reproductive endocrinology and infertility at the National Institutes of Health and Walter Reed National Military Medical Center. She is board-certified in obstetrics and gynecology, has published IVF and fertility preservation research in Fertility and Sterility, and went through infertility and IVF herself.
United States 
Jennifer Hirshfeld-Cytron, M.D.
Reproductive Endocrinologist
Dr. Jennifer Hirshfeld-Cytron is a double board-certified reproductive endocrinologist at Fertility Centers of Illinois in Chicago and the clinic's IVF Medical Director. Practicing since 2004, she focuses on fertility preservation and the cost-effectiveness of fertility treatment, and received the 2025 Arnold P. Gold Foundation Humanism in Medicine Award presented through ASRM.
United States 
Jennifer F. Kawwass, MD
Medical Doctor
Dr. Jennifer Kawwass is Division Director of Reproductive Endocrinology & Infertility at Emory University, Medical Director of Emory Reproductive Center, President-Elect of SART, and a guest researcher at the CDC. She specializes in IVF, third-party reproduction, functional hypothalamic amenorrhea, and fertility preservation, with 200+ peer-reviewed publications.
United States 
Jennifer Knudtson, MD
MD
Jennifer Knudtson, MD, is a reproductive endocrinologist at Aspire Fertility San Antonio, where the practice announced her arrival in May 2021 with patients seen at the Stone Oak location. Aspire's profile states double board certification in obstetrics and gynecology and in reproductive endocrinology and infertility, and a separate third-party directory, Castle Connolly Top Doctors, lists her. Medical school, residency and fellowship institutions are not published in our sources.
United States Showing 325-335 of 612
Ready to start your fertility journey?
Get a personalized plan from our medical advisors