Portrait of John I. Umekubo
ucsf logo

John I. Umekubo, MD

He | Him | HisInternal Medicine
Primary Care Hayes St.
415-379-2900
Portrait of John I. Umekubo
Portrait of John I. Umekubo
ucsf logo

John I. Umekubo, MD

He | Him | HisInternal Medicine
Primary Care Hayes St.
415-379-2900

On this page

About me

Dr. John I. Umekubo is a specialist in internal medicine who provides primary care. He is particularly interested in offering the latest treatments and improving outcomes for patients with chronic conditions, such as diabetes, high blood pressure, arthritis and Alzheimer's disease. He enjoys helping his patients achieve and maintain healthy lives.

Umekubo earned his medical degree from St. Louis University School of Medicine. At St. Mary's Medical Center (now UCSF Health St. Mary's Hospital), he completed a residency in internal medicine.

Outside of work, Umekubo enjoys performing and listening to music, playing golf, drinking wine, learning about classic European automobiles, and spending time in nature.

This provider works with UCSF through the UCSF Health Community Medical Group, a multispecialty group connecting doctors and practices throughout the Bay Area.

Education & training

Board certification

  • Internal Medicine, American Board of Medical Specialties

Residency

  • Internal Medicine, St Mary Medical Center

Internship

  • Internal Medicine, St Mary Medical Center

Degree

  • MD, St Louis University School of Medicine

My expertise

Locations

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    51 ratings
    About provider reviews

    Showing 1-6 of 11 reviews

    Sort by
    • 5 out of 5 Stars
      February 19, 2026

      Dr Umekubo is an excellent physician! He is very professional, kind and knowledgeable.

    • 5 out of 5 Stars
      February 18, 2026

      I could not be more pleased with my primary care provider

    • 5 out of 5 Stars
      February 15, 2026

      Dr. John Umekubo's rapport with his patients is excellent! I cannot praise him enough for his attention to detail, patience, and empathy. His referral to specialists over the years have always given me comfort.

    • 5 out of 5 Stars
      January 8, 2026

      Dr Umekubo is an excellent doctor, very knowledgeable and caring.

    • 5 out of 5 Stars
      December 30, 2025

      Dr. Umekubo is always caring and good at explaining problems.

    • 5 out of 5 Stars
      December 4, 2025

      Consistently excellent care!

    Please check with your health insurance plan regarding coverage for this type of care. Not all providers at UCSF Health are covered by every insurance plan.

    For informational purposes only, a link to the federal Centers for Medicare and Medicaid Services (CMS) Open Payments web page is provided here. The federal Physician Payments Sunshine Act requires that detailed information about payment and other payments of value worth over ten dollars ($10) from manufacturers of drugs, medical devices, and biologics to physicians and teaching hospitals be made available to the public.