Current Fellows

Emily Nguyen, MD

Dr. Emily Nguyen completed her residency in Obstetrics and Gynecology at Riverside Community Hospital, where she served as Administrative Co-Chief Resident. During residency, her research focused on patient education, health disparities, social determinants of health, and advancing patient-centered care through shared decision-making. Her work was presented at the American Urogynecologic Society (AUGS) Annual Meeting in 2024 and 2026.

Dr. Nguyen is passionate about surgical education, mentorship, and providing compassionate, high-quality care to underserved communities. Outside of medicine, she enjoys baking, running, and exploring the outdoors. She is excited to serve the Upper Valley community and looks forward to caring for its patients.

Kelly Mamelson, MD

Dr. Mamelson completed her OB/GYN residency at the University of Florida in Gainesville, Florida. Her research endeavors during residency focused standardization of OASIS repairs in residency training and improving OR utilization for GYN surgeons. She also analyzed the difference in endocervical margins between different LEEP electrodes. Her work was presented at the ACOG District XII conference in 2022 and at the 2024 AUGS meeting. Her current research interests include sexual health in the postmenopausal population. Dr. Mamelson is thrilled to continue her training in the Upper Valley and is joined by her husband, Jack, and her dog, Wallace.

Ekaterina Grebenyuk, MD

Dr. Grebenyuk completed her OB/GYN residency at Lankenau Medical Center in Philadelphia, Pennsylvania, where her research endeavors focused around the utility of pre-operative testing and post-operative outcomes for gynecologic surgery. She additionally looked into the relationship between post-operative outcomes, route of surgery and trainee involvement in myomectomies. Her work was presented at the 2022 AAGL meeting. During her chief year, Dr Grebenyuk spent time volunteering at a rural hospital in Abuja, Nigeria. She hopes to continue to pursue her research interests to improve postoperative outcomes for the rural patient population, and to expand her global health interests.