Center for Women's Reproductive Care / Reproductive Endocrinology and Infertility, New York

	Mark V. Sauer, MD Professor of Obstetrics and Gynecology Chief Division of Reproductive Endocrinology and Infertility Program Director Dr. Sauer has been a pioneer in the field of donor oocyte and embryo transfer and achieved the world's first donor egg pregnancies in menopausal women. Dr. Sauer is the Director of the Division of Reproductive Endocrinology. He has served as consulting editor or ad hoc member on the editorial boards of numerous scientific journals and has authored hundreds of articles. Dr. Sauer received his medical degree from the University of Illinois School of Medicine and completed his residency in obstetrics and gynecology at the University of Illinois Hospital. He completed his fellowship in reproductive endocrinology at the University of California at Los Angeles. See highlights of Dr. Sauer's publications.
	Janet M. Choi, MD Assistant Professor of Obstetrics & Gynecology Reproductive Endocrinologist After graduating from Harvard College, Dr. Choi received her medical degree from the College of Physicians and Surgeons, Columbia University. She served as a resident in Obstetrics and Gynecology at the Columbia Presbyterian Medical Center of New York Presbyterian Hospital. During her fellowship in Reproductive Endocrinology and Infertility at the Weill Medical College of Cornell University, she collaborated with researchers at Rockefeller University to study the effects of female hormones and menopause on the brain. This research was honored by the Society for Reproductive Endocrinology and Infertility. Dr. Choi's clinical interest include female infertility, adolescent gynecology, as well as laparoscopic and hysteroscopic surgery. See highlights of Dr. Choi's publications.
	Nataki C. Douglas, M.D. Ph.D. Assistant Professor of Obstetrics and Gynecology Reproductive Endocrinologist Dr. Douglas received her M.D. and Ph.D. degrees from Yale University School of Medicine and completed both her residency in Obstetrics and Gynecology and fellowship in Reproductive Endocrinology and Infertility at Columbia University. Her clinical interests include management of endocrine disorders, fertility treatment for female patients with co-existing medical conditions, as well as laparoscopic and hysteroscopic surgery. Dr. Douglas received several awards for teaching and research during her postgraduate training. Her research focuses on understanding the requirements for successful embryo implantation and the signaling pathways involved in the development of the reproductive system. Dr. Douglas was awarded a grant from the Reproductive Scientist Development Program to continue her basic research. *Currently, Dr. Douglas is not available for new patients’ appointments due to her full time research commitments.
	Michael M. Guarnaccia, MD Associate Professor of Clinical Obstetrics & Gynecology Medical Director Dr. Guarnaccia received his medical degree from Case Western Reserve University School of Medicine and completed his Residency in Obstetrics and Gynecology at the New York Hospital/Cornell Medical Center. He went on to complete a fellowship in Reproductive Endocrinology and Infertility at the Yale New Haven Hospital. Prior to joining the Department, Dr. Guarnaccia was on staff at the Center for Reproductive Medicine at the Brigham and Women's Hospital and the Harvard Medical School. His background and training encompass all aspects of ART and advanced gynecologic laparoscopy and hysteroscopy. As well, Dr. Guarnaccia has special interests in the reproductive and hormonal issues related to both Polycystic Ovarian Syndrome and patients with chemotherapy induced ovarian failure. See highlights of Dr. Guarnaccia's publications.
	Gary Nakhuda, MD Assistant Professor of Clinical Obstetrics and Gynecology Reproductive Endocrinologist Dr. Nakhuda is a graduate of New York Medical College, and completed his residency in ob-gyn and his fellowship in reproductive endocrinology and infertility at Columbia University. He received several awards for teaching and research during his postgraduate training, and has published numerous articles spanning topics from basic science to clinical medicine. He is a co-investigator on active research protocols, with a strong interest in clinical embryology. He is also a skilled surgeon, trained in complex minimally invasive techniques, such as robotic-assisted laparoscopic myomectomy.
	Rogerio A. Lobo, MD Professor of Obstetrics and Gynecology Fellowship Director Dr. Lobo is Director of the Center for Reproductive Sciences. He has done extensive research in various areas of reproductive endocrinology and infertility including estrogen metabolism and menopause. Dr. Lobo has a primary interest in hyperandrogenic disorders and polycystic ovary syndrome. He frequently serves as editor for peer-review journals and has authored over 300 articles and 16 books. Dr. Lobo received his medical degree from the Georgetown University School of Medicine and completed his residency in obstetrics and gynecology at University of Chicago. He went on to complete a fellowship in reproductive endocrinology at the University of Southern California Medical Center. See highlights of Dr. Lobo's publications.
	Susanna J. Park, M.D. Assistant Professor of Clinical Obstetrics and Gynecology Reproductive Endocrinologist Dr. Park received her medical degree from Albany Medical College. She completed both her residency in Obstetrics and Gynecology and her fellowship in Reproductive Endocrinology and Infertility at the University of Medicine and Dentistry of New Jersey - New Jersey Medical School. During her years there, Dr. Park performed, and received grant funding for extensive research on the physiology of infertility and disorders of women of advanced reproductive age. Dr. Park treats all forms of reproductive endocrinology disorders in adolescents and women, and is a highly skilled surgeon in infertility-related laparoscopic and hysteroscopic surgeries. She has extensive experience with in vitro fertilization.
	Melvin Thornton II, MD Associate Professor of Clinical Obstetrics and Gynecology Reproductive Endocrinologist Dr. Thornton is a specialist in Obstetrics, Reproductive Endocrinology and Infertility. He is recognized by the American Board of Obstetrics, Gynecology and Reproductive Endocrinology and Infertility and has held fellowships in Gynecologic Pelvic Surgery and Reproductive Endocrinology and Infertility. Prior to joining the Department, he was an Assistant Professor of Obstetrics and Gynecology at the University of Southern California School of Medicine, with research in post surgical adhesion prevention and its relation to infertility, chronic pelvic pain, ovulation disorders, embryo implantation and oral contraceptives. A native of Ohio, Dr. Thornton graduated from Oberlin College and received his medical degree from Washington University in St. Louis, Missouri. Both his Internship and Residency were served at the Department of Obstetrics and Gynecology, Women's and Children's Hospital, Los Angeles County/University of Southern California (LAC/USC). Additional postdoctoral training in advanced gynecological surgery, hysteroscopic and pelvic floor surgery was completed at Cleveland Clinic Foundation, Cleveland, Ohio. He is a fellow of the American College of Obstetrics an Gynecology, American Association of Gynecological Laparascopy and the American Society of Reproductive Medicine.
	Jeffrey Wang, MD Assistant Professor of Clinical Obstetrics and Gynecology Reproductive Endocrinologist Dr. Jeffrey Wang received his Bachelor of Science degree in economics and his medical degree from the University of Florida. He served as a resident in Obstetrics and Gynecology at the Columbia University Medical Center in New York City where he also completed his fellowship in Reproductive Endocrinology and Infertility. His research interests have focused on both basic science and clinical projects involving polycystic ovary syndrome, ovarian aging, angiogenesis and endometriosis.
	Ralf C. Zimmermann, MD Associate Professor of Obstetrics and Gynecology Audobon REI Clinic Director Dr. Zimmerman received his medical degree from the University of Hamburg in Germany. He completed a residency in obstetrics and gynecology and also in Psychiatry at Yale University. He completed a fellowship in reproductive endocrinology at the Mayo Clinic. In addition to treating patients with infertility and endocrine disorders, Dr. Zimmermann provides support for patients with premenstrual syndrome, menopausal problems and depression. He has authored more than fifty articles and abstracts in the fields of reproductive endocrinology and psychiatry. See highlights of Dr. Zimmerman's publications.

Services		Our Team
Initial Consultation and Fertility Assessment Egg Donor Program Recipient Screening and Preliminary Testing Donor Selection and Matching Process Donor Testing Donor / Recipient IVF Cycle Donor Compensation Micromanipulation Techniques Micromanipulation Techniques Assisted Hatching (AH) Pre-implantation Genetic Diagnosis (PGD) Basic Treatments Intrauterine Insemination (IUI) Male Infertility Semen Analysis Testicular/Epididymal Sperm Aspiration (TESA) Testicular Biopsy	Reproductive Endocrinology and Gynecology Advanced Treatments In Vitro Fertilization (IVF) Blastocyst Embryo Transfer Embryo Cryopreservation Oocyte Cryopreservation (Egg Freezing) Frozen Embryo Transfer Ovulation Induction Reproductive Surgery & Procedures Hysteroscopy – Diagnostic and Operative Laparoscopy – Diagnostic and Operative Tubal Microsurgery (Laparoscopic Tubal Reanastomocis) Fertility Preservation for Cancer Patients Patient Support Services Admissions and Support Counselor Patient Relations Coordinator Egg Donor Coordinator Teaching Class Fertility Education Workshops	Mark V. Sauer, MD Professor of Obstetrics and Gynecology Janet M. Choi, MD Assistant Professor of Obstetrics & Gynecology Michael M. Guarnaccia, MD Associate Professor of Clinical Obstetrics & Gynecology Gary Nakhuda, MD Assistant Professor of Clinical Obstetrics and Gynecology Rogerio A. Lobo, MD Professor of Obstetrics and Gynecology Susanna J. Park, M.D. Assistant Professor of Clinical Obstetrics and Gynecology Melvin Thornton II, MD Associate Professor of Clinical Obstetrics and Gynecology Jeffrey Wang, MD Assistant Professor of Clinical Obstetrics and Gynecology Ralf C. Zimmermann, MD Associate Professor of Obstetrics and Gynecology