Dr. Zeltser is a board-certified dermatologist and dermatologic surgeon. He is a graduate of Columbia University with a degree in biochemistry. He received his medical degree from University of Rochester School of Medicine, where he was inducted into Alpha Omega Alpha, the national honor medical society. This was followed by an internal medicine internship at Lenox Hill Hospital in New York City, where he was elected Outstanding Intern of the Year. He received his dermatology residency training at Boston University and Tufts – New England Medical Centers where he was named Chief Resident. Following residency Dr. Zeltser completed a Dermatologic and Mohs Surgery Fellowship at Tufts – New England Medical Center and served as a staff physician at Harvard Vanguard Dermatology Associates in Boston.

Dr. Zeltser is a Fellow of the American Academy of Dermatology, American Society for Dermatologic Surgery, and the American College of Mohs Micrographic Surgery. He is currently a Clinical Instructor at Columbia University's Department of Dermatology.