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Ian Robert Barrows, M.D.

Photo of Dr. Ian Robert Barrows, M.D.
  • Instructor of Medicine

Research Interests

Gut Microbiome, Cardiac Risk Prediction, Hypertension


Dr. Barrows attended the University of Maryland and George Washington University School of Medicine before training in medicine at Medstar Georgetown University Hospital. His research interests include the gut microbiome and cardiac risk prediction. He hopes to pursue training in cardiology in the future. more


  • Instructor of Medicine

Departments / Divisions



  • MD, The George Washington University School of Medicine (2016)


  • MedStar Georgetown University Medical Center / Internal Medicine (2019)

Board Certifications

  • Pending/Scheduled / Internal Medicine

Research & Publications

Selected Publications

Barrows IR, Ramezani A, Raj DS. Inflammation and Oxidative Stress in Hypertension - Partners in Crim. Adv Chronic Kidney Disease. 2019; 26(2):122-130

Ramezani A, Nolin TD, Barrows IR, Serrano M, Buck G, Regunathan-Shenk R, West RE, Latham PS, Amdur R, and Raj DC. Gut colonolization with Methanogenic Arcahea Lowers Plasma Trimethlamine N-Oxide Concentrations in Apolipoprotein e-/- Mice. Nature Scientific Reports. 2018;8(14752).

Patient Ratings & Comments

The 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.

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