Tamim M. Nazif, MD

Lawrence Koutcher, MD, is the Regional Director of Clinical Operations for Radiation Oncology at New York Presbyterian Hudson Valley Hospital (NYP-HVH) in Cortlandt Manor, NY, and New York Presbyterian Westchester (NYP-W) in Bronxville, NY. He also sees patients at New York Presbyterian Medical Group Hudson Valley in Cold Spring, NY. Dr. Koutcher is an Assistant Professor of Radiation Oncology at Columbia University Irving Medical Center. He is currently Chair of the Cancer Committee and serves on the Medical Board at NYP-HVH. As a physician who treats all adult cancer types, he greatly values the long-term relationships that he forms with his patients and their families. Dr. Koutcher has served as Medical Director for Radiation Oncology at NYP-HVH since his arrival in 2014. During this time, he has brought multiple new programs to NYP-HVH, including stereotactic body radiation therapy for inoperable lung cancer, stereotactic radiosurgery for brain metastases, Radium-223 (Xofigo) injections for select patients with metastatic prostate cancer, and along with his urology colleagues, SpaceOAR insertion to decrease the side effects of prostate radiation. Most recently, Dr. Koutcher and his colleagues have started the stereotactic body radiation therapy program for men with prostate cancer, which allows patients to complete their course of radiation in only five treatments. Dr. Koutcher joined NYP-W in 2021, and looks forward to adding to the robust set of services that this facility already offers. Dr. Koutcher earned his BA in biochemistry from Columbia University and his MD from Cornell University, where he received a National Cancer Institute Fellowship. He went on to complete his radiation oncology residency at Memorial Sloan Kettering Cancer Center, where he became Chief Resident. Following the completion of his residency, he went on to serve as Medical Director of Professional Radiation Oncology Services, and of the Herb and Sue Ann Redl Center for Cancer Care in Poughkeepsie, NY. In 2018 he was presented with the 40 under 40 Mover & Shaker Award by the Dutchess County Regional Chamber of Commerce. Dr. Koutcher has presented his research at national conferences, including the American Society for Therapeutic Radiation Oncology (ASTRO) and the American Society of Clinical Oncology (ASCO). He has published papers in multiple peer-reviewed journals, such as the International Journal of Radiation Oncology, Biology, and Physics, American Journal of Clinical Oncology, andRadiotherapy and Oncology. Since joining Columbia, he has been an active member of the lung cancer and prostate cancer research teams.

Dr. Arith Reyes is a board-certified surgeon specializing in breast cancer and benign breast diseases. She practices at Columbia University Medical Center and NewYork-Presbyterian Westchester. She performs all aspects of breast surgery including breast conservation (lumpectomy), mastectomy, nipple-sparing mastectomy, and axillary lymph node procedures. Dr. Reyes graduated from the University of Pennsylvania with a Bachelor of Arts degree in psychology with the highest honors of Summa Cum Laude. She received her medical degree from Washington University in St. Louis School of Medicine. She then underwent residency training in general surgery at Rutgers New Jersey Medical School. She subsequently completed clinical fellowship in breast surgery at Columbia University Medical Center. Dr. Reyes has authored peer-reviewed publications and she has presented at national conferences for breast surgery and breast cancer treatment. She is a fellow of the American College of Surgeons and a member of the American Society of Breast Surgeons and the Society of Surgical Oncology. Dr. Reyes works closely with a multidisciplinary team including radiologists, medical oncologists, radiation oncologists, plastic surgeons, and other breast cancer support staff. She is committed to providing excellent, thorough care for her patients.

Luona Sun, MD is a board-certified breast surgeon trained in minimal invasive nipple sparing mastectomy, skin sparing mastectomy, intraoperative radiation therapy and various frontline localization skills. She is also an active researcher, focusing on rare diagnoses like small cell carcinoma in breast cancer and high risk lesion management in patients with coexisting cancer. One of her major research interests is in Asian American breast cancer disparities. Dr. Sun received her undergraduate degree from SUNY Stony Brook University, her medical degree from SUNY Buffalo, and completed her general surgery residency at New York Presbyterian Queens/Weill Cornell Medical Center before coming to Columbia for her fellowship training. Over the course of that time, she earned several honors for her research work, including winning the Theresa and Eugene Lang Research Award and presenting her international collaboration with China’s 301 General Hospital at the American Society of Breast Surgeons 2019. Dr. Sun can conduct surgical consultations in Chinese as well as English.