Primary Care Doctor in Ontario, CA

115 verified active primary care doctors sourced from the public NPI registry — updated monthly.

For educational purposes only. Not medical advice — consult a qualified healthcare provider.

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Primary Care Doctors in Ontario, CA

  • Allison Nicole Redondo Lugo

    Family Nurse Practitioner

    Ontario, CA 91761

  • Angeli Arreglado Bautista, NP

    Family Nurse Practitioner

    Ontario, CA 91761

    (909) 986-7929

  • Armando Aguiniga, PA-C

    Physician Assistant

    Ontario, CA 91761

    (626) 646-9100

  • Brian Shaghafi, PA

    Physician Assistant

    Ontario, CA 91761

  • Catherine Fung-bagamasbad, FNP

    Family Nurse Practitioner

    Ontario, CA 91761

    (510) 504-0952

  • David Herbert Daniels, MD

    Internal Medicine Physician

    Ontario, CA 91764

    (909) 941-2572

  • Dipali Patel Radia, PA

    Physician Assistant

    Ontario, CA 91764

    (714) 455-9831

  • Jamie Phan Phung, PA-C

    Physician Assistant

    Ontario, CA 91761

    (425) 268-7772

  • Liwanag Asuncion, M.D.

    Internal Medicine Physician

    Ontario, CA 91761

    (440) 225-7095

  • Maristella J Cosip, FNP

    Family Medicine Physician

    Ontario, CA 91762

    (626) 327-5430

  • Mark A Folmsbee, D.O.

    General Practice Physician

    Ontario, CA 91762

    (334) 434-2031

  • Nahlla Dolle, M.D.

    Internal Medicine Physician

    Ontario, CA 91761

    (909) 947-6320

  • Naila Mubashar, M.D

    Family Medicine Physician

    Ontario, CA 91762

    (909) 988-2555

  • Ronan Basillote Patonona, NP-C

    Family Nurse Practitioner

    Ontario, CA 91762

    (562) 303-6862

  • Rosslynn S Byous, DPA, PAC

    Physician Assistant

    Ontario, CA 91764

    (909) 476-7113

  • Sean Fallon, PA

    Physician Assistant

    Ontario, CA 91764

  • Sherby Yinman Leung

    Physician Assistant

    Ontario, CA 91761

  • Teodoro G Diaz, DO

    Family Medicine Physician

    Ontario, CA 91761

    (909) 773-0022

What does a primary care doctor treat?

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This page provides general health information for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.