About
Dr. James Edward Katz, MD, MPH, earned his undergraduate degree in English from Yale University before completing his Doctor of Medicine at the University of Connecticut Medical School. He trained in Internal Medicine at Jefferson University Hospital in Philadelphia, then pursued a Master of Public Health at the Harvard School of Public Health. His clinical training continued with a fellowship in dermatology at Massachusetts General Hospital. He holds double board certification and maintains specialties in preventive medicine, internal medicine, functional medicine, and dermatology.
Dr. Katz began his career as Chief of Emergency Medicine at Quincy Hospital and later at St. Joseph's Hospital in Lowell. He served on the board of North East Emergency Medical Services and helped shape Massachusetts' pre-hospital medical services and 911 system. The American College of Emergency Physicians recognized him with the Vanguard Award in 1997, and he received the Emergency Physician of the Year honor in 1996. He is passionate about circadian health, nutrition, sleep medicine, and evidence-based approaches to cognitive and cardiovascular disease prevention.
Education & Training
Undergraduate
BA in English, Yale University
Medical School
Doctor of Medicine, University of Connecticut Medical School
Residency
Internal Medicine, Jefferson University Hospital
Fellowship
Clinical and research fellowship in Dermatology, Massachusetts General Hospital
Additional Training
Master of Public Health, Harvard School of Public Health
Certifications
Conditions Treated
Who is Dr. Katz right for?
Dr. Katz is a strong fit for adults seeking a rigorous, evidence-based approach to healthy aging. Patients concerned about cardiovascular risk, cognitive decline, or metabolic health benefit from his broad clinical background. His expertise in dermatology and functional medicine suits patients who want to address both internal and visible signs of aging. Adults interested in circadian health, nutrition, or sleep optimization will find his approach well matched to their goals.
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Frequently Asked Questions
Dr. Katz specializes in preventive medicine, internal medicine, functional medicine, and dermatology. He focuses on cardiovascular disease prevention, cognitive decline prevention, diabetes prevention, and hormone replacement therapy. He also addresses circadian health, sleep disorders, and nutrition-related conditions.
Yes, Dr. Katz holds double board certification. His certifications span multiple specialties, including internal medicine and preventive medicine.
Dr. Katz earned his MD from the University of Connecticut Medical School and completed his Internal Medicine residency at Jefferson University Hospital in Philadelphia. He later earned a Master of Public Health from the Harvard School of Public Health and completed a clinical and research fellowship in dermatology at Massachusetts General Hospital.
Dr. Katz brings training across emergency medicine, internal medicine, public health, and dermatology. He served as Chief of Emergency Medicine at two hospitals and helped shape Massachusetts' pre-hospital medical services and 911 system. The American College of Emergency Physicians recognized him with the Vanguard Award in 1997 and the Emergency Physician of the Year honor in 1996.
Dr. Katz builds each patient program from a detailed medical history and comprehensive lab testing. He identifies each patient's unique metabolic profile and creates a personalized health plan. He uses evidence-based methods drawn from functional medicine, sleep science, and nutrition to address root causes rather than symptoms alone.
Yes, Dr. Katz has a strong interest in sleep medicine and cognitive decline prevention. He uses tools such as home sleep apnea testing and applies circadian health principles to patient care. Patients concerned about memory, focus, or sleep quality will find these areas central to his practice.
Doctor profile last updated March 21, 2026