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    John M. Willis, DO

    Internal Medicine, Diabetes

    Dr. Willis's Overview

    Dr. Willis graduated from the University of North Texas College of Osteopathic Medicine in 1990. He works in Mansfield, TX and 1 other location and specializes in Internal Medicine and Diabetes. Dr. Willis is affiliated with Methodist Mansfield Medical Center.

    Dr. Willis's Experience

    Years in Practice: 27

    Dr. Willis's Specialties

    Internal Medicine, Diabetes

    Dr. Willis's Education & Training

    Medical School: University of North Texas College of Osteopathic Medicine; Graduated 1990

    Dr. Willis's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
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    Dr. Willis's Accepted Insurance

    Please verify insurance information directly with your doctor's office as it may change frequently.

    • Aetna Choice POS II
    • Aetna HMO
    • Aetna Managed Choice POS Open Access
    • Aetna Signature Administrators PPO
    • BCBS Blue Card PPO
    • BCBS TX BlueChoice
    • CIGNA LocalPlus
    • First Health PPO
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    Dr. Willis's Office Information & Appointments

    Office Locations

    *This physician has multiple office locations. See Office Information for details.

    Other Physicians in Dr. Willis's Practice

    • Not Available

    Dr. Willis's Hospital Affiliations

    Office Locations