Capital Digestive Physician Alan J. Diamond,MD

Alan J. Diamond,MD


Originally from Des Moines, Iowa, Alan Diamond, MD received his undergraduate degree from the University of Wisconsin. He graduated from Mount Sinai School of Medicine in New York and completed Internal Medicine residencies at Montefiore Medical Center in New York and George Washington University Medical Center in Washington, DC. He pursued his Gastroenterology fellowship at the Veterans Administration National Medical Center in Washington, DC. Dr. Diamond entered private practice in 1982 and has since treated thousands of patients suffering from a variety of gastrointestinal and liver disorders.

Request a direct access colonoscopy using Colonoscopy Now

Dr. Diamond appreciates the challenge of diagnosing his patients’ problems and of performing endoscopies. He is also an active member of the medical community, having served on the Ethics Committee at Holy Cross Hospital for nearly 20 years and as President of the Endoscopic Surgical Centre of Maryland and Endoscopic Surgical Centre of Maryland North for many of the past 14 years. He has been recognized by his peers as a “Top Doctor” in Washingtonian magazine.

Dr. Diamond met his wife, a pediatrician, in medical school. They have three children, two dogs and a cat. He has resided in Montgomery County for the past 32 years. He enjoys tennis and golf, locally and at Wintergreen, Virginia.


    • Spanish

    Office Locations

    Endoscopy Centers


    Medical Education

    Mount Sinai School of Medicine / New York, NY / Doctor of Medicine


    Montefiore Medical Center / Bronx, NY


    Gastroenterology / Veterans Administration Medical Center / Washington, DC

    Undergraduate Education

    University of Wisconsin / Madison, WI


    2015 Top Doctors Logo Graphic saying featured in Washington Consumers' Checkbook 2014-2015 Top Doctors as chosen by their peers Washingtonian Top Doctor 2014 logo Top US News Doctor logo 2012 Top Doctors Logo 2016 Top Doctor Logo 2017 Top Doctors Logo Graphic saying Top Doctor Washingtonian 2018 Graphic saying Top Doctor Washingtonian 2019 Graphic saying Bethesda Magazine Top Doctor 2019 Graphic saying Top Doctor - Washingtonian 2020 TopDocs-2021logo


    • Internal Medicine

      Additional Certification
    • Gastroenterology

      Additional Certifications


    Endoscopy Center Affiliations

    • Endoscopic Surgical Centre of Maryland-North
    • Endoscopic Surgical Centre of Maryland

    Hospital Affiliations

    • Shady Grove Adventist Hospital
    • MedStar Montgomery Medical Center
    • Holy Cross Hospital

    Member of

    • Montgomery County Medical Society
    • Metro Maryland Ostomy Association
    • Crohn’s and Colitis Foundation of America – Member
    • American Society for Gastrointestinal Endoscopy
    • American College of Gastroenterology – Member