Gregory Bruce Diette, M.D.

Headshot of Gregory Bruce Diette
  • Professor of Medicine


Asthma, Chronic Obstructive Pulmonary Disease (COPD), Pulmonary and Critical Care Medicine more

Research Interests

Environmental impacts on lung disease; Epidemiology of airway disease; Chronic obstructive pulmonary disease; Asthma more

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Main Phone

Outside of Maryland & Washington D.C.

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Johns Hopkins Bayview Medical Center

Appointment Phone: 410-550-5864
5501 Hopkins Bayview Circle
Asthma and Allergy Center
Baltimore, MD 21224
Phone: 410-550-1666
Johns Hopkins Bayview Medical Center - Google Maps

The Johns Hopkins Hospital (Main Entrance)

Appointment Phone: 410-955-3467
1800 Orleans St.
Sheikh Zayed Tower
Baltimore, MD 21287
The Johns Hopkins Hospital (Main Entrance) - Google Maps


Dr. Gregory Diette is a professor of medicine at the Johns Hopkins University School of Medicine. He holds a joint appointment in the Department of Epidemiology in the Johns Hopkins Bloomberg School of Public Health. He has over 20 years of experience diagnosing and managing complex and challenging pulmonary conditions. He is expert in the diagnosis and treatment of patients with common conditions such as asthma and COPD, as well as uncommon conditions such as allergic bronchopulmonary aspergillosis (ABPA), bronchiolitis obliterans, hypersensitivity pneumonitis and others.  His practice includes evaluation of patients with unexplained shortness of breath and cough as well as patients with a variety of environmental lung conditions. In addition to his outpatient practice, Dr. Diette provides inpatient care on the pulmonary, critical care and internal medicine services.

Dr. Diette earned his M.D. from the Temple University School of Medicine. He completed his residency at the Hospital of the University of Pennsylvania and performed a fellowship in pulmonary and critical care medicine at Johns Hopkins. He received his M.H.S. from the Johns Hopkins Bloomberg School of Public Health.

His research interests include environmental impacts on lung disease, epidemiology of airway disease and chronic obstructive pulmonary disease. more


  • Professor of Medicine

Departments / Divisions

Centers & Institutes



  • MD; Temple University School of Medicine (1990)


  • Internal Medicine; Hospital of the University of Pennsylvania (1993)


  • Pulmonary and Critical Care Medicine; Johns Hopkins University School of Medicine (1998)

Board Certifications

  • American Board of Internal Medicine (Pulmonary Disease) (2017)
  • the national board of physicians and surgeons (Internal Medicine) (2016)

Research & Publications

Research Summary

Dr. Diette is a pulmonologist with a research focus on environmental causes of lung diseases. His work in asthma and COPD has included examining the impact of air pollution, allergens, diet, urban environment and health care disparities. He has been funded by the NIH, EPA and other organizations for his research.

Clinical Trials

The effect of air quality on the adult asthmatic response (INHALE)

Contact for Research Inquiries

1830 E. Monument Street
5th Floor
Baltimore, MD 21205 map
Phone: 410-502-7038

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