UT Medicine Fertility Center

Physician Information

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Robert S. Schenken, MD

Robert S. Schenken, MD, Professor and Chairman

Dr. Schenken assumed the position of Chairman in 2002. He holds the rank of Professor and the Humana Foundation Distinguished Chair in Obstetrics and Gynecology. Dr. Schenken completed medical school at Baylor College of Medicine in 1977 and concluded his residency training at UTHSCSA. He completed a fellowship in Reproductive Endocrinology at the National Institutes of Health, Pregnancy Research Branch, in 1982. He then rejoined our department as an Assistant Professor. Dr. Schenken was the Chief of the Division of Reproductive Endocrinology and Infertility from 1986 until 2002. He is certified by the American Board of Obstetrics and Gynecology in Obstetrics and Gynecology and Reproductive Endocrinology and Infertility. His special interests include endometriosis and ovarian physiology.

Photo of Jennifer F. Knudtson, MD, PhD

Tien-cheng (Arthur) Chang, Ph.D., HCLD/ELD/CC, Associate Professor and Director, ART Labs

Dr. Chang received his bachelor's degree from National Taiwan University, Taiwan. He earned his Master's and Ph.D. degrees in Endocrinology and Reproductive Physiology at the University of Wisconsin-Madison before joining our department in 2007. Dr. Chang is board certified as High-complexity Clinical Laboratory Director (HCLD), Embryology Laboratory Director (ELD), and Clinical Consultant (CC) by the American Board of Bioanalysis (ABB). He serves as Director of Clinical Assisted Reproductive Technology (ART) Laboratories at the UT Medicine Fertility Center, and Embryology & Stem Cell Research Laboratory Director for the Department. His clinical and research interests include in vitro fertilization (IVF), gamete and embryo development, cryopreservation, preimplantation genetic diagnosis and screening (PGD/PGS), embyro implantation, andrology, ART laboratory quality management, as well as nonhuman primate embryology and stem cell biology for modeling reproductive and regenerative medicine.

Photo of Jennifer F. Knudtson, MD, PhD

Jennifer F. Knudtson, M.D., Assistant Professor

Dr. Knudtson earned her Bachelor of Science in Biochemistry from the University of Texas at Austin in 2004. She then attended the University of Texas Medical Branch at Galveston School of Medicine, receiving her M.D. in 2008 and joined our faculty in July 2012. She is a member of the Gold Humanism Honor Society.

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Randal Robinson, MD

Randal D. Robinson, MD, Professor

Dr. Robinson joined the Department of Obstetrics and Gynecology and Reproductive Endocrinology Division in 2011. He received his A.B (Arte Baccareleuratis) and M.D. degrees from the University of Missouri and completed his Obstetrics and Gynecology residency at Madigan Army Medical Center, Tacoma, WA in 1992 and a Fellowship in Reproductive Endocrinology and Infertility at Harvard Medical School, Brigham and Women's Hospital, Boston, MA in 1996. Dr. Robinson directs the Fellowship Program in Reproductive Endocrinology and Infertility in the Division of Reproductive Endocrinology. He previously served on active duty in the US Army Medical Corps and retired at the rank of Colonel after more than 26 years of service. He served as both the Chairman and Residency Program Director of Obstetrics and Gynecology at the San Antonio Military Medical Center and the San Antonio Uniformed Services Health Education Consortium. He is board certified in Obstetrics and Gynecology and Reproductive Endocrinology and Infertility. Dr. Robinson currently serves as Vice-Chairman of the Council on Resident Education in Obstetrics and Gynecology. He is a board examiner for the American Board of Obstetrics and Gynecology and is the Army Section Chair of the Armed Forces District of the American College of Obstetricians and Gynecologists.