About
Keith Fleischman, DO, serves as Senior Physician Partner at Cenegenics New York, bringing over 28 years of medical experience to the practice. He earned his medical degree from the University of New England College of Osteopathic Medicine in 1984. He then completed an Anesthesiology residency at St. Barnabas Medical Center in Livingston, NJ, earning the Robert Dripps Award for Outstanding Resident. Further postgraduate training in Obstetric Anesthesia and Critical Care followed. He served as Section Chief of Obstetric Anesthesia and earned recognition as a Top Doc in NJ in a poll of nurses by New Jersey Magazine. He maintains an active teaching role and holds an association with Robert Wood Johnson Medical School.
Dr. Fleischman's passion for Age Management Medicine runs deep and personal. He grew up practicing Yoga and later trained in Martial Arts, reaching Black Belt proficiency; he remains active in both. He still plays and coaches soccer. Helping people perform at their highest level throughout their lives fuels his clinical approach. He loves to travel, scuba dive, ski, and hike. Married to a Brazilian American, he keeps a home in Brazil and speaks fluent Portuguese, with conversational Spanish as well.
Education & Training
Medical School
University of New England College of Osteopathic Medicine (1984)
Residency
Anesthesiology residency, St. Barnabas Medical Center, Livingston, NJ
Additional Training
Postgraduate training in Obstetric Anesthesia and Critical Care; association with Robert Wood Johnson Medical School
Languages
English, Portuguese, Spanish
Conditions Treated
Who is Dr. Fleischman right for?
Dr. Fleischman is a strong fit for adults who want a performance-focused approach to healthy aging. Executives and active professionals benefit from his deep background in age management and preventive medicine. Patients with complex health goals, from optimizing body composition to improving cognitive performance, will find his approach methodical and personalized. Spanish- and Portuguese-speaking patients can communicate with him directly in their preferred language.
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Frequently Asked Questions
Dr. Fleischman specializes in age management medicine, executive health, and preventive medicine. He brings over 28 years of medical experience to these areas. His clinical focus centers on helping adults perform at their highest level throughout their lives.
Dr. Fleischman earned his medical degree from the University of New England College of Osteopathic Medicine in 1984. He completed an Anesthesiology residency at St. Barnabas Medical Center in New Jersey, where he earned the Robert Dripps Award for Outstanding Resident. He later pursued advanced postgraduate training in Obstetric Anesthesia and Critical Care and served as Section Chief of Obstetric Anesthesia.
Dr. Fleischman holds a Doctor of Osteopathic Medicine degree and has built his career across anesthesiology, critical care, and age management medicine. He maintains an active teaching association with Robert Wood Johnson Medical School.
Yes. Dr. Fleischman maintains an active teaching role through his association with Robert Wood Johnson Medical School. He also earned recognition as a Top Doc in New Jersey Magazine based on a poll of nurses.
Yes. Dr. Fleischman speaks fluent Portuguese and conversational Spanish. Patients who prefer to communicate in either language can do so during their visits.
Dr. Fleischman primarily sees adult patients focused on optimizing their health and longevity. His background makes him particularly well-suited for executives, active individuals, and anyone working toward specific performance goals related to energy, body composition, or healthy aging.
Dr. Fleischman's passion for age management is both professional and personal. He has practiced Yoga since childhood, holds a Black Belt in Martial Arts, and continues to play and coach soccer. His lifestyle informs a clinical belief that high performance is achievable at every stage of life.
Doctor profile last updated March 21, 2026