About
Dr. John Cary, MD, earned his B.A. in Biology from the University of Maryland, Baltimore in 1980. He went on to complete his medical degree at the University of Maryland School of Medicine in 1984. He then completed his Internal Medicine internship and residency at Mercy Hospital Baltimore, finishing in 1987. He holds board certification from the American Board of Internal Medicine and fellowship status in the American College of Physicians.
Dr. Cary spent more than two decades deeply involved in the Prince William County medical community. He served as Chairman of the Department of Medicine at Prince William Hospital in 2009 and 2010, and held various hospital committee roles from 1987 through 2010. He co-founded the Prince William Area Free Clinic in 1992 and served on its board through 2014. He also served as Medical Examiner for Prince William County from 1990 to 2005. His clinical focus centers on internal medicine, preventive medicine, Type 2 diabetes, osteoporosis, osteoarthritis, cardiovascular prevention, and healthy aging. He is passionate about understanding each patient's full picture and offering guidance that is proactive rather than reactive. Outside of medicine, Dr. Cary runs, swims, lifts weights, plays soccer and piano, studies Spanish, Italian, and French, and enjoys travel.
Education & Training
Undergraduate
University of Maryland, Baltimore - B.A. Biology, 1980
Medical School
University of Maryland School of Medicine, Baltimore - MD, 1984
Residency
Internal Medicine Internship and Residency, Mercy Hospital Baltimore, 1984-1987
Certifications
Languages
English
Conditions Treated
Who is Dr. Cary right for?
Dr. Cary is a strong fit for adults seeking a thorough, relationship-driven internist in Northern Virginia. Patients managing Type 2 diabetes, osteoporosis, osteoarthritis, or cardiovascular risk benefit from his proactive approach. He works well with patients who want a physician to understand their full health picture, not just isolated concerns. Anyone prioritizing preventive care and healthy aging will find his clinical philosophy well-aligned with their goals.
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Frequently Asked Questions
Dr. Cary focuses on internal medicine and preventive medicine. His clinical interests include Type 2 diabetes, osteoporosis, osteoarthritis, cardiovascular prevention, and healthy aging. He approaches each condition by understanding the patient's full health picture and offering proactive guidance.
Yes. Dr. Cary holds board certification from the American Board of Internal Medicine. He also carries fellowship status in the American College of Physicians, a distinction designated by the initials FACP.
Dr. Cary earned his medical degree from the University of Maryland School of Medicine in 1984. He completed his internal medicine internship and residency at Mercy Hospital Baltimore, finishing in 1987. His undergraduate degree in Biology came from the University of Maryland, Baltimore in 1980.
Dr. Cary has practiced in the Prince William County and Northern Virginia area since completing his residency in 1987. He chaired the Department of Medicine at Prince William Hospital and co-founded the Prince William Area Free Clinic in 1992. His ties to this community span nearly four decades.
Dr. Cary takes a proactive rather than reactive approach. He focuses on understanding each patient's full health picture before making clinical decisions. His goal is to offer thorough, thoughtful guidance that helps patients stay ahead of potential health problems.
Yes. Northern Virginia Magazine named Dr. Cary a Top Doctor in 2020, 2023, 2024, and 2025. Washingtonian also recognized him as a Top Doctor in 2023.
Routine visits with Dr. Cary run approximately 30 minutes. The annual comprehensive health assessment takes about 60 minutes. These appointment lengths allow Dr. Cary to address concerns thoroughly without rushing.
Yes. Members receive Dr. Cary's personal cell phone number for urgent after-hours needs. This direct access is one of the core benefits of membership at the practice.
Doctor profile last updated March 21, 2026