• Opionato Experts

    Opionato brings together a multidisciplinary and multi-institutional team of leading U.S fertility experts by invitation only. Their selection is based upon their significant contribution, recognition, and research in the field of reproductive medicine. With over 250 years of combined experience, the participating experts through Opionato provide you a personalized, trusted, and highly actionable next-steps advice for your current fertility situation. Opionato will save you stress and time and optimize your chance of having a baby.

  • Reproductive Endocrinologists

    Marcelle Cedars, MD

    Marcelle Cedars, MD

    Reproductive Endocrinologist

    Director, Reproductive Health
    University of California, San Francisco

    San Francisco, CA

    Dr. Marcelle I. Cedars is one of the world leaders in reproductive endocrinology. With more than 200 research publications, she is often an invited speaker and session chair at numerous national and international conferences. She is currently the Director of the University of California, San Francisco Center for Reproductive Health, Professor of Obstetrics, Gynecology and Reproductive Sciences, and Director of the UCSF Division of Reproductive Endocrinology where she coordinates the relationship between science and research being done at UCSF and personalized care for medical center patients. Cedars received her medical training at the University of Texas Southwestern School of Medicine, completed her residency in obstetrics and gynecology at Parkland Memorial Hospital in Dallas, and her fellowship in reproductive endocrinology at University of California, Los Angeles.
    Her clinical and research interests include polycystic ovary syndrome, clinical and genetic markers of ovarian aging, a study of the intrafollicular environment, assisted reproductive technologies, development of new oocyte/embryo freezing protocols, research into new ovulation induction protocols for the difficult patients, and fertility preservation for cancer patients. She is an NIH-funded researcher and has chaired the FDA panel on Obstetrical and Gynecological Devices. She also currently serves on the Editorial Board of the journal Fertility and Sterility and the Journal of Clinical Endocrinology and Metabolism.

  • Eric Forman, MD

    Eric Forman, MD, HCLD

    Reproductive Endocrinologist and Clinical Laboratory Director (Embryologist)

    Reproductive Medicine Associates of NJ (RMA-NJ)

    Morristown, NJ

    Dr. Eric J. Forman is a board certified Reproductive Endocrinologist, Obstetrician and Gynecologist, and High-complexity Clinical Laboratory Director who serves as an Assistant Professor, Division of Reproductive Endocrinology, Sidney Kimmel Medical College of Thomas Jefferson University and Assistant Professor at Rutgers Robert Wood Johnson Medical School. He went to Duke University for his undergraduate education and earned his medical degree summa cum laude from SUNY-Downstate College of Medicine. He completed his Obstetrics and Gynecology residency at Duke University Medical Center, and his fellowship in Reproductive Endocrinology and Infertility at RWJ-RMANJ.


    His clinical and research interests resulted in more than 40 publications on the topics of single embryo transfer, fertility preservation including oocyte vitrification (egg freezing), preimplantation genetic diagnosis (PGD), and diminished ovarian reserve. A study led by Dr. Forman demonstrated for the first time that embryos formed after egg freezing are not at an increased risk of being chromosomally abnormal, an accomplishment that was deemed a “watershed” in assisted reproductive technology by one of the world’s experts on cryopreservation. Another landmark study led by Dr. Forman showed for the first time that similar delivery rates could be achieved by transferring one chromosomally-normal embryo as compared to two unscreened embryos while eliminating the risk of twins.

  • Brian A Levine, MD

    Brian A. Levine, MD, MS

    Reproductive Endocrinologist

    Practice Director, CCRM

    New York NY

    Dr. Brian A. Levine is the founding partner and practice director of the Colorado Center For Reproductive Medicine in New York City. He also serves as an attending at Lenox Hill Hospital. He completed his reproductive endocrinology fellowship at the Center for Reproductive Medicine of Weill Cornell Medical College, in obstetrics and gynecology residency at the Department of Obstetrics and Gynecology at Columbia University Medical Center, and the medical training at the New York University School of Medicine where he currently serves as a member of NYU’s Board of Trustees.
    Dr. Levine is a member of the New York Surgical Society, the New York Medical Society, the New York Society for Reproductive Medicine, the Society for Assisted Reproductive Technology (SART), the American Society for Reproductive Medicine (ASRM), and the American Congress of Obstetricians and Gynecologists (ACOG). He also is the current technology editor of Contemporary OB/GYN magazine. He is a frequent lecturer nationwide on how physicians and laboratory personnel can adopt common technologies to improve clinical efficiency. His research interest and areas of expertise include diminished ovarian reserve and male-factor infertility.

  • Alan Copperman, MD

    Alan Copperman, MD

    Reproductive Endocrinologist

    Director, Division of Reproductive Endocrinology and Infertility

    Mount Sinai Medical Center

    New York, NY

    Dr. Copperman is the Director of the Division of Reproductive Endocrinology and Infertility and Vice-Chairman of the Department of Obstetrics, Gynecology, and Reproductive Science at Mount Sinai Medical Center, Clinical Professor of Obstetrics, Gynecology, and Reproductive Science at Mount Sinai School of Medicine, and the Medical Director of RMA of New York. He received his medical degree from New York Medical College, completed his residency in Obstetrics and Gynecology at Yale-New Haven Hospital, and continued his training at Mount Sinai Medical Center in New York.


    Dr. Copperman's clinical interest focuses on female infertility, miscarriage, and in vitro fertilization. He is a fellow of the American College of Obstetricians and Gynecologists and the American Society for Reproductive Medicine. He has been recognized by New York Magazine as one of New York’s “Best Doctors” fifteen years in a row, being frequently quoted in national and international media.

  • David Keefe, MD

    David Keefe, MD

    Reproductive Endocrinologist and Psychiatrist

    Chairman, Department of Obstetrics & Gynecology

    New York University

    New York, NY

    Dr. David L. Keefe is a leading US fertility physician and scientist. He is the Stanley H. Kaplan Professor and Chairman of Obstetrics and Gynecology, Department of Obstetrics and Gynecology and Professor of Cell biology at New York University. He completed his medical training at Georgetown University, psychiatry residency at the University of Chicago, neuro-endocrinology fellowship at Northwestern University, and reproductive endocrinology fellowship at Yale University School of Medicine. He has won the ASRM General Program, Society for Assisted Reproductive Technology and New England Fertility Society Prize Paper Awards. Dr. Keefe has also served as the Scientific Chair of the Annual Meeting of the American Society for Reproductive Medicine, on the Board of Resolve and the Editorial Boards of the journals Human Reproduction and the Journal of Assisted Reproductive Technology and Genetics, and as a reviewer for such publications as the American Journal of Obstetrics & Gynecology and the New England Journal of Medicine.

    Dr. Keefe has published extensively with more than 170 papers and abstracts in publication. His research focuses on egg infertility, egg freezing, ovulation induction, recurrent miscarriage, polycystic ovary syndrome (PCOS), menstrual disorders, endometriosis and male infertility. His research focusing on egg infertility, reproductive aging, and stem cells has received funding from the National Institutes of Health (NIH), the American Society for Reproductive Medicine (ASRM), and the King Foundation and was awarded several U.S. patents.

  • Nam Tran, MD

    Nam Tran, MD

    Reproductive Endocrinologist

    IVF and Scientific Director, Spring Fertility

    San Francisco, CA

    Dr. Nam D. Tran is a dual board certified physician in both Obstetrics and Gynecology and Reproductive Endocrinology & Infertility and an award-winning clinical researcher in ovarian insufficiency, endometriosis, and stem cell research. He completed both his residency in obstetrics and gynecology and fellowship in reproductive endocrinology at University of California, San Francisco. After his fellowship, Dr. Tran joined the UCSF Faculty as Assistant Professor of Obstetrics & Gynecology and also as the Principal Investigator at the Center for Regenerative Medicine.
    Dr. Tran's has published more than 40 research papers that deal with premature ovarian failure, endometriosis, and azoospermia. He was the first to generated primordial germ cells from women and men with premature germ cell failure to investigate possible cures for these patients. Dr. Tran also discovered and patented a procedure allowing physicians and scientists to use sperm stem cells to treat male infertility. This “first of its kind” experimental procedure was recognized with the Society of Male Reproduction and Urology Scholar Award and the American Society for Reproductive Medicine (ASRM) Scientific Prize Paper winner 2015.

  • Kenan Omurtag, MD

    Kenan Omurtag, MD

    Reproductive Endocrinologist

    Assistant Professor, Washington University

    St. Louis, Missouri

    Dr. Kenan Omurtag is Assistant Professor at the Fertility and Reproductive Medicine Center of Washington University St. Louis School of Medicine. He obtained his medical degree from University of Missouri-Kansas City School of Medicine, obstetrics and gynecology residency at Emory University School of medicine and reproductive endocrinology fellowship at Washington University St. Louis School of Medicine.
    His clinical interest and areas of expertise include operative laparoscopy and hysteroscopy for fibroids, in vitro fertilization, ovulation induction, endometriosis, and male factor infertility.

  • Peter Klatsky, MD

    Peter Klatsky, MD

    Reproductive Endocrinologist

    Medical Director, Spring Fertility

    San Francisco, CA

    Dr. Peter Klatsky is board certified in both obstetrics and gynecology and reproductive endocrinology. He did his medical training and graduated with honors from the Mount Sinai School of Medicine. He completed his in obstetrics and gynecology residency at University of California, San Francisco, and his reproductive endocrinology fellowship at Brown University. He received a Masters in Public Health from Columbia University and was selected by his peers as a Rising Star among New York Physicians while on the faculty at the Albert Einstein College of Medicine.
    Dr. Klatsky’s scientific accomplishments include clinical research on infertility treatments, fibroids, access to fertility care around the world, and his laboratory work resulted in the first molecular genetic test of human oocytes (eggs) using polar body biopsy. In addition to his scientific and academic achievements, he is passionate about improving access to quality healthcare, human rights, and justice. He designed and founded Mama Rescue, a cloud-based, automated mobile phone platform to improve access to care and prevent maternal and neonatal mortality in Uganda.

  • Reproductive Genetic Counselors

    Gina Davis, MS, LCGC

    Gina Davis, MS, LCGC

    Reproductive Genetic Counselor

    Advocate Reproductive Genetic Counseling

    Sacramento, CA

    Gina Davis is a licensed, board-certified genetic counselor who specializes in the field of reproductive medicine with the focus on infertility, assisted reproductive technologies and pre-implantation genetic diagnosis. She served as a genetic counselor at the University of California, San Francisco's Center for Reproductive Health from 2004 to 2013. Gina also worked as a medical assistant at two private fertility practices in Southern California and conducted research at a UC Irvine molecular genetics laboratory. Gina has helped to shape the role of the genetic counselor within the field of Reproductive Medicine and as such served as the past chair and current member of the Genetic Counseling Special Interest Group of the American Society for Reproductive Medicine (ASRM). She is an active member of the Assisted Reproductive Technology Special Interest Group of the National Society of Genetic Counselors (NSGC).
    Far more than credentials, Gina's own fertility struggle has given her even greater compassion and appreciation of the emotional complexity of reproductive medicine. She understands that the rapid advances in genetics and reproductive medicine make it increasingly difficult for patients to gather this information on their own and make deliberate and conscientious use of it.

  • Reproductive Therapists

    Judith Kottick, LCSW

    Judith Kottick, LCSW

    Reproductive Clinical Social Worker/Therapist

    RMA-NJ and Fertility Counseling Services

    Montclair, NJ

    Judith Kottick, LCSW, is a recognized expert in the field of reproductive counseling. She draws upon her postgraduate training as a psychodynamic psychotherapy and in behavioral medicine from the Mind/Body Institute at Harvard Medical School. She developed the psychological services components at the Institute of Reproductive Medicine and Sciences at St. Barnabas Medical Center and at Reproductive Medicine Associates of New Jersey (RMA-NJ). She is a consultant to fertility centers in New York, New Jersey and Connecticut and has been invited to speak on this topic at various seminars and workshops throughout the country. Involved as a mentor for Resolve Northeast region and the American Society for Reproductive Medicine, Judith has written numerous articles for professional organizations, and has also contributed a chapter to the book “Frozen Dreams.”

    Judith area of expertise is helping individuals and couples cope with infertility, pregnancy loss, PCOS, premature ovarian failure, high-risk pregnancies, adoption, non-genetic parenting issues and third party reproduction. Judith also works extensively with same-sex couples, egg donation, and gestational surrogacy. She also sees individuals, couples and young adults with a wide range of issues, from depression and loss to parenting difficulties, anger management, and relationship stress.

  • Reproductive Nurses Specialists

    Theresa Pittman, NP

    Theresa Pittman, NP, MSN

    Fertility Nurse

    San Francisco, CA

    Theresa is a nurse practitioner with thirty years of medical experience providing state of the art care in the field of reproductive medicine, gynecology, obstetrics, and primary health. She has played a leading role in curriculum development and education in the field of fertility care. As a legal nurse consultant, Theresa also reviewed medical records, prepared deposition questions, and conducted extensive medical-legal research that related to medical causation issues in TORT litigations.


    Theresa has published a variety of peer-review articles and has served as creator, publisher and Editor-in-Chief of Reproductive Review journal that published review articles for nurses interested in the field of reproductive endocrinology.

  • Nancy Weiss, RN

    Nancy Weiss, RN, RNC

    Fertility Nurse

    Palo Alto, CA

    Nancy’s thirty-seven-year career focuses on women’s health with the last sixteen years dedicated to reproductive health. Her most recent position has been with the Palo Alto Medical Foundation Reproductive Endocrinology Department in San Jose, California.


    Nancy received an Associate Science Degree in Nursing with honors in 1979 from Bristol Community College. Her special interests and research include patient advocacy, education, and compliance in the treatment of infertility. In 2006, she received an outstanding research award for her work presented at the Nineteenth International Conference for Nurses and Support Personnel in Reproductive Medicine. She has presented at ASRM and has served on nurse’s advisory boards for Resolve National Infertility Association and Ferring Pharmaceuticals, Inc. She is a current member of The American Society for Reproductive Medicine and the European Society of Human Reproduction and Embryology.

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