About
Dr. Seth Feltheimer has practiced internal medicine in New York City for more than four decades. A. D. from the University of Navarra School of Medicine. His long tenure at Columbia University Medical Center included roles as Associate Clinical Professor of Medicine and Associate Attending Physician, spanning 1995 to 2026.
Dr. Feltheimer holds board certification in Internal Medicine through the American Board of Internal Medicine, a credential he has maintained since 1984. In 2018, he became a Fellow of the American College of Physicians. His career reached well beyond clinical work: he trained residents and medical students, directed managed care and international medicine programs, and served on executive boards at several of New York's most respected medical institutions. New York Magazine and Castle Connolly have both recognized him continuously since 1992. He speaks English and Spanish fluently. Feltheimer Comprehensive Medical Care represents the practice he has always wanted to run: thoughtful, personal, and unhurried.
Education & Training
Undergraduate
Johns Hopkins University, B.A. Chemistry
Medical School
University of Navarra School of Medicine
Additional Training
Associate Clinical Professor of Medicine, Columbia University Medical Center (1995–2026); Director of managed care and international medicine programs
Certifications
Languages
English, Spanish
Who is Dr. Feltheimer right for?
Dr. Feltheimer is an excellent fit for adults who want a single, consistent physician managing their full picture of health. Patients navigating complex or chronic conditions benefit from his four decades of internal medicine expertise. Those who value direct access to their doctor, without intermediaries or handoffs, will find his practice well suited to their needs. His bilingual fluency in English and Spanish makes him a strong match for Spanish-speaking patients seeking high-continuity care in New York City.
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Frequently Asked Questions
Dr. Feltheimer specializes in internal medicine. His clinical focus includes preventive care, chronic disease management, wellness planning, and comprehensive evaluations. He also manages specialist referrals, test interpretation, second opinions, and hospital coordination for his patients.
Dr. Feltheimer has practiced internal medicine in New York City for more than four decades. He spent the majority of that career at Columbia University Medical Center as an Associate Clinical Professor of Medicine and Associate Attending Physician from 1995 to 2026.
Yes. Dr. Feltheimer holds board certification in Internal Medicine through the American Board of Internal Medicine. He has maintained that certification since 1984. He is also a Fellow of the American College of Physicians, a distinction he has held since 2018.
A. in Chemistry from Johns Hopkins University. D. at the University of Navarra School of Medicine. His postgraduate career included an extended faculty appointment at Columbia University Medical Center.
Yes. New York Magazine has repeatedly named Dr. Feltheimer to its Best Doctors list, and Castle Connolly has recognized him as a Top Doctor. Both honors have continued without interruption since 1992.
Dr. Feltheimer is bilingual in English and Spanish. He conducts full clinical consultations in both languages.
Dr. Feltheimer served as an Associate Clinical Professor of Medicine and Associate Attending Physician at Columbia from 1995 to 2026. He trained residents and medical students, directed managed care and international medicine programs, and served on executive boards at several leading New York medical institutions.
Dr. Feltheimer manages specialist referrals and test interpretation directly. Patients receive results and guidance from him personally, without going through a portal or an intermediary. He also coordinates hospital care and second opinions as part of his standard membership services.
Dr. Feltheimer is passionate about getting ahead of health problems before they develop. He conducts annual comprehensive evaluations and builds individualized wellness plans for each patient. His goal is proactive management rather than reactive treatment.
Doctor profile last updated June 12, 2026