Highlights
Age Groups Seen
- Young Adult 18-25
- Adult 26-64
- Older Adult 65+
Languages
- Chinese - Mandarin
- English
In-Network Plans
View All Accepted Plans (12)Gender
MaleJohns Hopkins Affiliations:
- Johns Hopkins School of Medicine Faculty
About Jonathan Jun
Professional Titles
- Director, Sleep Disorders Center
- Director, Sleep Medicine Fellowship Program
Primary Academic Title
Associate Professor of Medicine
Johns Hopkins Physician
Background
Dr. Jun is a pulmonary, critical care, and sleep medicine physician. He is an expert in the diagnosis and treatment of sleep-disordered breathing, and in the care of critically ill patients in the Medical ICU. He is a member of the Sleep Fellowship Program Evaluation and Clinical Competency Committee and provides teaching to medical students and residents at Johns Hopkins.
Centers and Institutes
- Johns Hopkins Bayview Medical Center
- Sleep Disorders Center at The Johns Hopkins Hospital
Find a Clinical Trial
View all trials by this principal investigator.
Recent News Articles and Media Coverage
This is the weird reason you can’t lose weight, according to science, Ladders (June 16, 2020)
Metabolic Effects of Late Dinner in Healthy Volunteers—A Randomized Crossover Clinical Trial, Oxford University Press (June 2020)
Contact for Research Inquiries
5501 Hopkins Bayview Circle Room 5A.50.
Baltimore, MD 21224
Lab Website
Polotsky Research Lab - Lab Website
Research Summary
Dr. Jun's long-term goal is to understand the bi-directional relationship between respiratory and metabolic health. Studies include metabolic / cardiovascular impacts of obstructive sleep apnea, effects circadian rhythm and sleep on substrate metabolism, and interventions for obesity hypoventilation syndrome.
PubMed - Publications
Honors
- Finalist, W. Leigh Thompson Excellence in Research: Clinical Research Faculty Award, Johns Hopkins, 10/1/17
- Emerging Leaders Program, American Thoracic Society, 5/20/16
- James B. Skatrud New Investigator Award, American Thoracic Society, 5/20/13
- First Place, Scientific Seminar Series, Johns Hopkins Postdoctoral Association, 1/1/09
Memberships
- American Academy of Sleep Medicine
- American Thoracic Society
- Association of Critical Care Medicine
Locations
- Levi Watkins, Jr., M.D., Outpatient Center
- 601 North Caroline Street, Floor 7, Baltimore, MD 21287
- Get Directions
- phone: 443-287-3313
- fax: 410-367-2710
Expertise
Education
- Fellowship: Johns Hopkins University School of Medicine, Pulmonary and Critical Care Medicine, 2011
- Fellowship: Johns Hopkins University School of Medicine, Sleep Medicine, 2010
- Fellowship: Johns Hopkins University School of Medicine, Pulmonary and Critical Care Medicine, 2009
- Residency: Thomas Jefferson University Hospitals, Internal Medicine, 2006
- Medical Education: University of Maryland School of Medicine, MD, 2003
Board Certifications
- Pulmonary Disease: American Board of Internal Medicine, 2013
- Sleep Medicine: American Board of Internal Medicine, 2011
Insurance
- Aetna
- CareFirst
- Cigna
- First Health
- Geisinger Health Plan
- HealthSmart/Accel
- Johns Hopkins Health Plans
- MultiPlan
- Pennsylvania's Preferred Health Networks (PPHN)
- Point Comfort Underwriters
- Private Healthcare Systems (PHCS)
- Veteran Affairs Community Care Network (Optum-VACCN)
Ratings & Reviews
4.9 out of 5
35 ratings, 8 reviewsThe Patient Rating score is an average of all responses to physician related questions on the national CG-CAHPS Medical Practice patient experience survey through Press Ganey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Comments are also gathered from our CG-CAHPS Medical Practice Survey through Press Ganey and displayed in their entirety. Patients are de-identified for confidentiality and patient privacy.
- 5 out of 5 starsReviewed on 12/3/2025
Great
- 5 out of 5 starsReviewed on 11/26/2025
He is a nurse however I believe that he should be a doctor however I believe that he does not want to since he likes the time with his patients and has a lot of compassion for them.
- 5 out of 5 starsReviewed on 11/19/2025
Very pleasant and helpful
- 5 out of 5 starsReviewed on 11/5/2025
Excellent
- 5 out of 5 starsReviewed on 9/3/2025
He was very professional and caring
- 5 out of 5 starsReviewed on 7/22/2025
Dr Jun is an excellent doctor. He's willing to admit when a decision was not the most proper one and always is ready to offer a great fix for it. As for my numeric ratings...no one gets a 10. Not even me.
- 5 out of 5 starsReviewed on 5/7/2025
He's patient
- 5 out of 5 starsReviewed on 5/7/2025
Dr. Jun is fantastic. Personable. Efficient. Appreciated.