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Jonathan C. Jun, M.D.

Assistant Professor of Medicine


Appointment Phone


Main Location

Johns Hopkins Outpatient Center

Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

Learn more about our international patient services »


Johns Hopkins Outpatient Center

Appointment Phone: 443-287-3313

601 N. Caroline Street
Suite 1261
Baltimore, MD 21287 map
Phone: 443-287-3313
Fax: 443-287-3312

Johns Hopkins Bayview Medical Center

Appointment Phone: 443-287-3313

5501 Hopkins Bayview Circle
Asthma and Allergy Center Suite 5B.81
Baltimore, MD 21224 map
Phone: 410-550-0115
Fax: 410-550-2612


Critical Care Medicine , Pulmonary and Critical Care Medicine, Pulmonary Medicine, Sleep Disorders


Dr. Jonathan Jun is an assistant professor of medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include pulmonary and critical care medicine.

Dr. Jun is a faculty member at the Johns Hopkins Hospital Sleep Disorders Center and a pulmonary and critical care medicine faculty member in the Sleep Medicine Fellowship Program at Johns Hopkins Bayview Medical Center.

Dr. Jun earned his M.D. from the University of Maryland School of Medicine. He completed his residency at Thomas Jefferson University Hospital and performed a fellowship in pulmonary and critical care medicine at Johns Hopkins.

He received a grant from the Baltimore Diabetes Research Center in 2012 to conduct research on the role of lipolysis in intermittent hypoxia-induced insulin resistance. He is a member of several professional organizations, including the American Academy of Sleep Medicine and the Association of Critical Care Medicine. more

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