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Sara Lewin



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

    UCSF, 2012

  • Residencies

    UCSF, Internal Medicine, 2015

  • Fellowships

    UCSF, Gastroenterology, 2018

    UCSF, Inflammatory Bowel Disease, 2018

  • Board Certifications

    Gastroenterology, American Board of Internal Medicine

    Internal Medicine, American Board of Internal Medicine

  • Academic Title

    Assistant Professor

Where I see patients (2)

    My reviews


    Overall Experience
    141 Ratings
    About our process
    Nov 09, 2023
    Dr Lewin Is fantastic at relating to me as an intelligent human being (a skill many MDs lack). I appreciate the 2 way conversation around treatment options given my more complex case. She really is a phenomenal physician and I wish more doctors could learn from her bedside manner
    Nov 08, 2023
    Thank you.
    Nov 04, 2023
    She listened to my description of my problem and ways I had compensated to take care of it. She assured me that she would have more information from an upcoming procedure and we could discuss further with the upcoming procedure.
    Oct 21, 2023
    Dr. Lewin gets five stars from me!
    Oct 13, 2023
    Dr. Lewin was amazing. Great listener and very knowledgeable. Answered all my questions kindly patiently and without judgement.
    Oct 06, 2023
    Dr. Lewin's superlative knowledgeable and detailed guidance could not be surpassed!She makes me feel safe and provides exceptional professionalism!
    Oct 05, 2023
    I was very impressed with the doctor! She listened very well and came up with a good maintenance plan. She was also very personable and so easy to talk to. I am so happy that she will be my new doctor!
    Sep 09, 2023
    Both doctors were very professional attentive to my concederns and questions extremely knowledgeable on the subjects we discussed.
    Sep 08, 2023
    Awesome doctor
    Aug 17, 2023
    Provider is great other systems supporting provider need much improvement.
    Jul 30, 2023
    The physician clearly had read my entire medical history and pre-visit notes.
    Jul 12, 2023
    I would Refer Doctor Lewin to those that have GI Problems
    Jun 28, 2023
    She is very professional and was enthusiastic to help me. I opted out at this time for the treatment she would be providing only because my condition had improved after taking Budesonide for almost three months which was ordered by my gastroenterologist. Would definitely reconnect with her if the need arises.
    Jun 26, 2023
    Dr. Lewin is the best
    Jun 21, 2023
    Dr. Lewin was so kind warm and informative on issues I've experienced and new ways to help control symptoms I have. I'm so elated with the medication and information she prescribed to help control and help to make my life less stressful.
    Dec 11, 2022
    Dr. Lewin is fantastic physician. She listens thinks and plans many steps ahead and sincerely wants to collaborate. I wish all my physicians were as wonderful as she is.
    Dec 09, 2022
    Sara did a great job and is very knowledgeable
    Dec 07, 2022
    I'm grateful Dr Lewin is my doctor. She's kind smart extremely competent and an exceptionally clear and effective communicator
    Dec 05, 2022
    I feel very fortunate to have Dr Lewin. She has been excellent she's been correct on everything so far!
    Nov 30, 2022
    I'm so thankful and grateful to have such amazing care.
    Nov 18, 2022
    Great experience
    Oct 29, 2022
    I felt that my Doctor was very attentative to my health condition questionsand concerns that I had. I felt like I am in good hands which is such a relief!
    Oct 06, 2022
    Very pleased with Dr. Lewin and her team
    Oct 04, 2022
    Dr Lewin is very easy to talk to and I feel that she cares about me.
    Sep 09, 2022
    Felt comfortable speaking to both doctors
    Apr 02, 2022
    Provider was great
    Feb 16, 2022
    Terrific doctor!