Melvin H. Thornton

Reproductive Endocrinologist at Extend Fertility

Dr. Melvin H. Thornton, II is recognized as one of the world’s leading experts in egg donation and surrogacy. He is double board certified in Reproductive Endocrinology and Infertility as well as Obstetrics and Gynecology. Dr. Thornton received his medical degree from Washington University in St. Louis, completed his internship and residency at the University of Southern California, and received additional training in advanced reproductive surgery at The Cleveland Clinic. He joined the faculty at Columbia University where he served as Medical Director and Director of the Egg Donation Program at the Center for Women’s Reproductive Care (CWRC).

Dr. Thornton has been helping families achieve their dreams of having children for over 20 years. Dr. Thornton has published more than 50 papers, written several book chapters, and presented over 100 abstracts at national conferences on topics related to infertility, third party reproduction, and women’s health. He has distinguished himself through his extensive research in the treatment of HIV sero-discordant couples and the relationship to infertility and fertility treatment. Although his interests include all aspects in the treatment of infertility, he is particularly recognized as being one of the world’s leading experts in egg donation and surrogacy.

He is currently an Associate Professor at Quinnipiac University and provides lectures in reproductive medicine and infertility to OB/GYN residents at New York Medical College. He is an excellent educator and gives board review lectures for OB/GYN, Family Medicine and Pediatrics residents preparing for their board examination. He previously was a member of the ACGME Clinical Competency Committee for Obstetrics and Gynecology at Columbia and currently sits on the ASRM Education Committee. He is a Castle Connolly National Top Doctor, and was awarded the Top Doctors New York Metro Area Award in 2017, 2018, 2019, 2020, 2021 and 2022.


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