Margaret Vaughan, MD - NewYork-Presbyterian Medical Group Hudson Valley - Primary Care, Allergy & Immunology

Eun Soo Kwak-Peacock, MD, is board certified in Allergy and Immunology. Dr. Kwak-Peacock graduated magna cum laude from Harvard College and earned her medical degree from Columbia College of Physicians and Surgeons. She completed her residency in Internal Medicine and her fellowship in Allergy and Immunology at Columbia University Medical Center, where she also worked as a hospitalist. Dr. Kwak-Peacock has been featured in several published articles and peer-reviewed journals. She is a member of the American Academy of Allergy and Immunology and the American College of Allergy, Asthma and Immunology. Dr. Kwak-Peacock treats both adult and pediatric patients at her Croton-On-Hudson office.

Nicole S. Belkin, MD, an orthopedic surgeon, sports medicine specialist with expertise in non-operative and operative treatment of injuries and conditions affecting the knee, shoulder elbow, and hip. Dr. Belkin earned her medical degree from the University of Florida School of Medicine and completed her residency in Orthopedic Surgery at the University of Pennsylvania. She conducted laboratory research for an additional year at the university and won the Orthopedic Research and Education Foundation's Resident Clinician Scientist Award. Her research received both national and international recognition. Dr. Belkin completed a fellowship in Sports Medicine and Shoulder Surgery at the Hospital for Special Surgery in New York. Through this advanced training, she gained experience treating articular cartilage injuries, meniscus injury and meniscus deficiency, ligament reconstruction, patellofemoral conditions, early arthritis of the knee, shoulder dislocations and separations, rotator cuff tears, shoulder arthritis, elbow injuries and hip impingement. She is an expert in minimally invasive and arthroscopic techniques and shoulder replacements. Her clinical focus is in the treatment of ligament, cartilage, meniscus and patellofemoral injuries of the knee; rotator cuff and labrum injuries and arthritis of the shoulder; injuries and overuse conditions of the elbow and labrum injuries and impingement of the hip. Dr. Belkin provides individualized state-of-the-art care to athletes of all descriptions. She has served as an assistant team physician for the New York Giants, an associate team physician for Iona College Athletics, and an orthopedic consultant to the New York Public School Athletic League. She also served as the head team physician at Pace University.

Dr. Michael Christensen, MD, is board-certified in Internal Medicine, and is an Assistant Clinical Professor of Medicine at Columbia University Medical Center. Dr. Christensen received his undergraduate education at the University of Notre Dame, and his medical training at the University of Monterrey and the Mount Sinai School of Medicine. After his internship, residency, and chief residency at Mount Sinai Hospital Services at Elmhurst City Hospital Queens, he stayed on in a faculty position in the Primary Care Residency Program. He was also appointed Medical Director of the hospital's diagnostic clinic, where care was provided to hundreds of patients daily from one of the most diverse communities in New York City. Dr. Christensen has been caring for his patients for more than 20 years. He received the "Excellence in Education Award" from the Undergraduate Medical Education and Primary Care at New York Medical College during his time of preceptorship. Dr. Christensen is fluent in Spanish and is a member of the American College of Physicians.