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Dr. Mark Leondires

Dr. Mark LeondiresDr. Mark P. Leondires is Medical Director and Partner in reproductive endocrinology at Reproductive Medicine Associates of Connecticut (RMACT) and is board-certified in both Obstetrics and Gynecology and Reproductive Endocrinology and Infertility.

Board-Certified Reproductive Endocrinologist: Infertility Doctor – Connecticut & New York

Among Dr. Leondires’ accolades, he was chosen by his peers as a Castle Connelly Regional Top Doctor for his work in the field of reproductive endocrinology and infertility.  He was also selected in 2012, 2013 & 2014 for Best Doctors in America, a database of the country’s top five percent of physicians, as chosen through a peer-review process. 

Prior to joining RMACT, he most recently served as the Director of Assisted Reproductive Technologies at the Combined Federal Program for Reproductive Endocrinology. While under his direction, the ART Program was one of the most successful in the Washington DC area and in the top tenth percentile nationally. During this time he was an Assistant Professor at the Uniformed Services University of Health Sciences and clinical faculty for the Combined Fellowship in Reproductive Endocrinology. His professional society memberships include the Society of Reproductive Endocrinologists, the American College of Obstetrics and Gynecology, and the American Society for Reproductive Medicine.

He received his undergraduate degree in biochemistry and history from Colby College in Waterville, Maine. He earned his medical degree from the University of Vermont College of Medicine in Burlington, Vermont. He completed his residency in Obstetrics and Gynecology at Maine Medical Center in Portland, Maine, which was followed by a fellowship in Reproductive Endocrinology and Infertility at the National Institutes of Health in Bethesda, Maryland.

Along with numerous teaching and research activities, Dr. Leondires has published numerous articles in professional medical journals, as well as abstracts, articles and book chapters.

His research interests include IVF, endometriosis, polycystic ovarian syndrome, the role of hormones in brain function, and reduction in higher-order multiple gestations.

Contact us to book an appointment with RMACT lead infertility specialist Dr. Leondires in our Connecticut or New York fertility centers.

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