Sara Lewin, MD

Associate Clinical Professor

Dr. Sara Lewin is a gastroenterologist who specializes in caring for patients with inflammatory bowel diseases, disorders of the small intestine and nutritional deficiencies. In addition to evaluating patients in the clinic, she performs procedures to examine the digestive tract. These include upper endoscopy, colonoscopy, capsule endoscopy – in which the patient swallows a tiny camera that transmits images – and double-balloon enteroscopy, in which the doctor can enhance viewing by inflating balloons attached to the endoscope.

Lewin's research interests include improving care for hospitalized patients with gastrointestinal illnesses and the complications of inflammatory bowel disease.

Lewin earned her medical degree at UCSF, where she then completed a residency in internal medicine, followed by fellowships in gastroenterology and inflammatory bowel disease. She belongs to the American Association for the Study of Liver Diseases, American Gastroenterological Association, American College of Gastroenterology, American Society for Gastrointestinal Endoscopy and Northern California Society for Clinical Gastroenterology.

Education
2021 - Diversity, Equity, and Inclusion Champion Training, University of California, San Francisco
Gastroenterology Fellowship, 2018 - , University of California, San Francisco
Inflamatory Bowel Disease Fellowship, 2018 - , University of California, San Francisco
Internal Medicine Residency, 2015 - , University of California, San Francisco
M.D., 2012 - , University of California, San Francisco
Sc.B., - , Brown University
Publications

  1. Karlovich N, McConnell R, Velayos F, Mahadevan U, Lewin S. Opioid Use and Outcomes in Patients Hospitalized With Acute Severe Ulcerative Colitis. Inflammatory bowel diseases 2024. PMID: 39295282


  2. Mennillo E, Kim YJ, Lee G, Rusu I, Patel RK, Dorman LC, Flynn E, Li S, Bain JL, Andersen C, Rao A, Tamaki S, Tsui J, Shen A, Lotstein ML, Rahim M, Naser M, Bernard-Vazquez F, Eckalbar W, Cho SJ, Beck K, El-Nachef N, Lewin S, Selvig DR, Terdiman JP, Mahadevan U, Oh DY, Fragiadakis GK, Pisco A, Combes AJ, Kattah MG. Single-cell and spatial multi-omics highlight effects of anti-integrin therapy across cellular compartments in ulcerative colitis. Nature communications 2024. PMID: 38374043


  3. Caplan A, McConnell R, Velayos F, Mahadevan U, Lewin S. Delayed Initiation of Rescue Therapy Associated with Increased Length of Stay in Acute Severe Ulcerative Colitis. 2022. PMID: 35389167


  4. Lewin S, Lees C, Regueiro M, Hart A, Mahadevan U. International Organization for the Study of Inflammatory Bowel Disease: Global Strategies for Telemedicine and Inflammatory Bowel Diseases. Journal of Crohn's & colitis 2020. PMID: 33085971


  5. Lewin S, Velayos FS. Day-by-Day Management of the Inpatient With Moderate to Severe Inflammatory Bowel Disease 2020. PMID:


  6. Kotwani P, Terdiman J, Lewin S. Tofacitinib for rescue therapy in acute severe ulcerative colitis: a real-world experience. Journal of Crohn's & colitis 2020. PMID: 32020189


  7. Lewin SM, McConnell RA, Patel R, Sharpton SR, Velayos F, Mahadevan U. Improving the Quality of Inpatient Ulcerative Colitis Management: Promoting Evidence-Based Practice and Reducing Care Variation With an Inpatient Protocol. Inflammatory bowel diseases 2019. PMID: 30980712


  8. Selvig D, Piceno Y, Terdiman J, Zydek M, Umetsu SE, Balitzer D, Fadrosh D, Lynch K, Lamere B, Leith T, Kassam Z, Beck K, Lewin S, Ma A, Somsouk M, Lynch SV, El-Nachef N. Fecal Microbiota Transplantation in Pouchitis: Clinical, Endoscopic, Histologic, and Microbiota Results from a Pilot Study. Digestive diseases and sciences 2019. PMID: 31302808


  9. Lewin SM, Wen KW, Velayos FS, Mahadevan U, Beck KR. How Dye May Prevent Dying from Cancer: Perceiving Imperceptible Dysplasia in Inflammatory Bowel Disease. Digestive diseases and sciences 2019. PMID: 30523483


  10. Mao EJ, Lewin S, Terdiman JP, Beck K. Safety of dual biological therapy in Crohn's disease: a case series of vedolizumab in combination with other biologics. BMJ open gastroenterology 2018. PMID: 30538822


  11. Lewin SM, Kallianos K, Nevah MI, Zhao S, Fix OK, Brooks GC, De Marco T, Qasim AN, Ordovas KG, Mehta N. Cardiac MRI T2* in Liver Transplant Candidates: Application and Performance of a Novel Imaging Technique to Identify Patients at Risk for Poor Posttransplant Cardiac Outcomes. Transplantation direct 2018. PMID: 30046653


  12. Lewin SM, Mehta N, Kelley RK, Roberts JP, Yao FY, Brandman D. Liver transplantation recipients with nonalcoholic steatohepatitis have lower risk hepatocellular carcinoma. Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society 2017. PMID: 28340509


  13. Shergill AK, Conners EE, McQuaid KR, Epstein S, Ryan JC, Shah JN, Inadomi J, Somsouk M. Protective association of colonoscopy against proximal and distal colon cancer and patterns in interval cancer. Volume 82 of Issue 3. Gastrointestinal endoscopy 2015. PMID: 25936449


  14. Wilson JG, Epstein SM, Wang R, Kanzaria HK. Cardiac tamponade. Volume 14 of Issue 2. The western journal of emergency medicine 2013. PMID: 23599855