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Stefan a Cadag, DO

Stefan a Cadag, DO

Please contact to confirm appointment availability

Optum Provider

Please contact to confirm appointment availability

Specialty

Internal Medicine, Endocrinology Diabetes & Metabolism

Languages

English

Seeing patients at

Patient Reviews

Patient review summary

Learn about our survey

5

4

3

2

1

4.7

126 reviews

    • Reviewed on May 23, 2026
    • Verified Review

    Friendly, fun to talk to. Makes you feel at ease.

    • Reviewed on May 23, 2026
    • Verified Review

    he knows me, he encourages me, he gives me ideas, he's genuine that he cares and shows respect

    • Reviewed on May 23, 2026
    • Verified Review

    Listens and answers questions. Knows me as a person. Upbeat attitude and very positive.

    • Reviewed on May 22, 2026
    • Verified Review

    He is kind, courteous, compassionate, very knowledgeable, a wonderful doctor.

    • Reviewed on May 21, 2026
    • Verified Review

    Listens to me. Works with me. Not full of himself. Had that issue with another doctor.

    • Reviewed on May 19, 2026
    • Verified Review

    Very knowledgeable

    • Reviewed on May 18, 2026
    • Verified Review

    He is showing me an attentive care and concern for my health.

    • Reviewed on May 14, 2026
    • Verified Review

    Very nice and explains things very well

    • Reviewed on May 14, 2026
    • Verified Review

    Very good doctor. Took his time to talk, assess, explain. Very professional and friendly.

    • Reviewed on May 11, 2026
    • Verified Review

    Already referred him

    • Reviewed on May 2, 2026
    • Verified Review

    Holistic approach and no pressure matter of fact reviewed my supplements

    • Reviewed on Apr 29, 2026
    • Verified Review

    He knows what he is doing

    • Reviewed on Apr 29, 2026
    • Verified Review

    He took the time to answer my questions and did not rush me.

    • Reviewed on Apr 25, 2026
    • Verified Review

    He is very good endo

    • Reviewed on Apr 25, 2026
    • Verified Review

    Medically informed, pleasant

    • Reviewed on Apr 23, 2026
    • Verified Review

    Dr. Cadag is is uniquely qualified. Extremely intelligent, professional, calm, thorough, thoughtful & and kind personality.

    • Reviewed on Apr 22, 2026
    • Verified Review

    He is on top of my doctors 🥼 lists and always on time

    • Reviewed on Apr 21, 2026
    • Verified Review

    He is very thorough and concerned about my health, and makes recommendations to improve my situation

    • Reviewed on Apr 18, 2026
    • Verified Review

    Great physician. Very easy to talk to. Very knowledgeable

    • Reviewed on Apr 17, 2026
    • Verified Review

    Doctor is excellent he is caring. He is kind and he treats you with great respect. He’s very knowledgeable and I’m extremely happy with him and would recommend him to all my friends and family.

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  • Gender

    Male

    Board certifications

    American Board of Internal Medicine

    Licenses

    CA, 20A14859, 14859

    Employed or contracted

    Employed

    Network Name

    OptumCare HealthCarePartners California

    NPI

    1841408721

  • Medical School

    • Arizona College Osteopathic Medicine

      2000

    Residency

    • Beth Israel Medical Center (New York, NY)

      Internal Medicine

      2005

    Internship

    • Beth Israel Medical Center (New York, NY)

      2004

    Fellowship

    • Beth Israel Medical Center (New York, NY)

      2008