Our Doctors

Whether you need simple drug therapy or the more advanced Assisted Reproductive Technologies (ART), your care will be managed by a leading infertility specialist at RMA of Philadelphia and Central Pennsylvania.

Our fertility doctors have all been named “Top Doc” by Philadelphia Magazine.

Arthur J. Castelbaum, MD

Arthur Castelbaum, MD - reproductive endocrinologist in Philadelphia - fertility doctorsDr. Castelbaum received his medical degree from Washington University, and completed his residency training and postgraduate fellowship in Reproductive Endocrinology and Infertility at the University of Pennsylvania Medical Center. He has been featured in Philadelphia Magazine and on The Discovery Channel and he also serves as a reviewer for the journals Fertility and Sterility and Human Reproduction.

Martin Freedman, MD

Martin Freedman, MD - fertility doctor in Philadelphia - fertility doctorsDr. Freedman received his medical degree from Wayne State University and completed his postgraduate fellowship in Reproductive Endocrinology and Infertility at the University of Pennsylvania Medical Center. He was responsible for the first cryopreserved embryo pregnancy in the Mid-Atlantic region. He is a cofounder and past president of the Philadelphia Area Reproductive Endocrine Society. Dr. Freedman is a reviewer for the journal Fertility and Sterility.

Benjamin Gocial, MD

Benjamin Gocial, MD – Philadelphia infertility doctor - fertility doctorsDr. Gocial earned his medical degree from Temple University School of Medicine and completed his residency and fellowship training in Reproductive Endocrinology and Infertility at Thomas Jefferson University Hospital. He is an active member of the American Society of Reproductive Medicine (ASRM). He served as a board member and committee chair of the Society of Assisted Reproductive Technologies (SART), and is cofounder and past president of the Philadelphia Area Reproductive Endocrine Society. He is a reviewer for the American Association of Gynecological Laparoscopists and is the newly appointed Chair of the Department of Gynecology of Chestnut Hill Hospital.

Jacqueline Gutmann, MD

Jacqueline Gutmann, MD - infertility specialist in Philadelphia - fertility doctorsDr. Gutmann received her medical degree from the Yale University School of Medicine, and completed her residency and fellowship in Reproductive Medicine and Infertility at the Yale-New Haven Hospital, where she received the Irving Friedman Award for Excellence in Patient Care and was also named a Robert Wood Johnson Clinical Scholar. She currently serves on the medical advisory board of the American Fertility Association (AFA). She has been featured on The Learning Channel and in Philadelphia Magazine.

Kara Khanh-Ha Nguyen, MD, MPH

Kara Khanh-Ha Nguyen, MD, MPH- Pennsylvania fertility specialist - fertility doctorsOriginally from Harrisburg, PA, Dr. Nguyen received her medical degree from Jefferson Medical College and Masters in Public Health at the Johns Hopkins University. During her residency training in Obstetrics and Gynecology at Christiana Care Hospital she received awards for excellence in teaching and research. She completed two subspecialty fellowships in Clinical Genetics at the National Institutes of Health and Reproductive Endocrinology & Infertility at Beth Israel Deaconess Medical Center, a teaching hospital of Harvard Medical School. Her research in infertility and stem cells is funded by the National Institutes of Health and New England Fertility Society. She was recognized as the first OBGYN accepted into the prestigious Clinical Investigator Training Program of Harvard Catalyst. She has also served on the Committee on Genetics for the American College of OBGYNs and is an active member of the ASRM.


William Schlaff, MD

William Schlaff, MD - infertility specialist in Philadelphia - fertility doctorsDr. William Schlaff is a graduate of Yale University and the University of Michigan Medical School where he also completed his residency in obstetrics and gynecology. He completed his fellowship in reproductive endocrinology at Johns Hopkins University where he also served on the faculty for 8 years. In 1989 Dr. Schlaff was recruited to the University of Colorado in Denver where he founded the Division of Reproductive Endocrinology and built it into one of the preeminent divisions in the country. In addition to being an outstanding clinician, having been named one of the Best Doctors in America annually for 20 years, Dr. Schlaff has been a prolific clinical researcher having been continuously funded for his research by the National Institutes of Health for 15 years and published over 150 scientific papers. He has held numerous national leadership positions including the Board of Directors of the American Society for Reproductive Medicine and was elected President of the Society of Reproductive Endocrinology and Infertility in 2004. In 2011 Dr. Schlaff was recruited to Philadelphia to become the Paul and Eloise Bowers Professor and Chairman of the Department of Obstetrics and Gynecology at Jefferson Medical College, Thomas Jefferson University.

Caleb Kallen, MD, PhD

Caleb Kallen, MD, PhD - infertility specialist in Philadelphia - fertility doctorsDr. Kallen Directs the Division of Reproductive Endocrinology at Thomas Jefferson University. He received his medical and PhD degrees from the University of Pennsylvania and completed his residency training at the Hospital of the University of Pennsylvania. He completed fellowship training in Reproductive Endocrinology and Infertility at the Yale-New Haven Hospital. He has received national recognition for his teaching and is an NIH-funded researcher.