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Mark Gregory Lazarev, M.D.

Assistant Professor of Medicine


Appointment Phone


Main Location

The Johns Hopkins Hospital

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 »


  • Assistant Professor of Medicine



The Johns Hopkins Hospital

Appointment Phone: 410-933-7495

600 N. Wolfe Street
Sheikh Zayed Tower
Baltimore, MD 21287 map

Johns Hopkins Gastroenterology and Hepatology - Howard County

Appointment Phone: 410-715-0350

10700 Charter Drive
Charter Medical Building Suite 310
Columbia, MD 21044 map

Johns Hopkins Medicine - Green Spring Station

Appointment Phone: 410-616-7350

2360 W. Joppa Road
Lutherville, MD 21093 map
Phone: 410-616-7350


Celiac Disease, Clinical Gastroenterology, Colitis, Colon Polyps, Crohn's Disease, Diarrhea, Digestive Diseases, Gastroenterology, Inflammatory Bowel Disease, Proctitis, Ulcerative Colitis

Featured Video

Inflammatory Bowel Disease: Improving Quality of Life

    Additional Information

  • Education +


    • University of Pittsburgh School of Medicine / MD (2002)


    • Beth Israel Deaconess Medical Center / Internal Medicine (2005)


    • University of Pittsburgh School of Medicine / Gastroenterology (2008)
    • Mount Sinai Medical Center / Gastroenterology (2009)


    • American Board of Internal Medicine / Gastroenterology (2008)
    • American Board of Internal Medicine / Internal Medicine (2005)
  • Research & Publications +
  • Academic Affiliations & Courses +
  • Activities & Honors +
  • Videos & Media +
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