Dr. Keith Fleischman is a Senior Physician Partner at Cenegenics New York with more than 28 years of clinical experience and a lifelong dedication to health, fitness, and human performance. His work in Age Management Medicine is fueled by a deeply personal belief: the ability to sustain strength, vitality, and peak function throughout life is both achievable and transformative when approached proactively.
Dr. Fleischman earned his medical degree from the University of New England College of Osteopathic Medicine and completed his residency in Anesthesiology at St. Barnabas Medical Center in Livingston, New Jersey. During his training, he received the prestigious Robert Dripps Award for Outstanding Resident in Anesthesiology and went on to pursue advanced postgraduate training in Obstetric Anesthesia and Critical Care. He later served as Section Chief of Obstetric Anesthesia and has been recognized as a “Top Doc in New Jersey” by New Jersey Magazine based on peer nominations from nursing professionals.
Throughout his career, Dr. Fleischman has remained actively involved in medical education, teaching physicians and medical students and maintaining an academic association with Robert Wood Johnson Medical School. His clinical background in high-acuity care informs a disciplined, systems-based approach to longevity, one that emphasizes prevention, optimization, and long-term performance rather than reactive treatment.
Dr. Fleischman’s passion for Age Management Medicine is rooted in lived experience. From early exposure to yoga philosophy and martial arts—achieving black belt proficiency, to ongoing participation in yoga, martial arts, and competitive soccer as both player and coach, he embodies the principles he brings to his members. Having personally experienced the benefits of a proactive approach to aging, he is deeply committed to helping others achieve lifelong health, resilience, and peak performance.
Outside the clinic, Dr. Fleischman enjoys travel, scuba diving, skiing, and hiking. Married to a Brazilian American, he maintains a home in Brazil and is fluent in Portuguese, with conversational proficiency in Spanish. His global perspective and active lifestyle further reflect the Cenegenics mission: physician-led, precision-driven longevity care that empowers individuals to perform at their highest level, at every stage of life.
