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    John F. Zalewski, MD

    Internal Medicine

    • (314) 919-2500

    Dr. Zalewski's Overview

    Dr. Zalewski graduated from the University of Buffalo, SUNY School of Medicine and Biomedical Sciences in 1980. He works in Saint Louis, MO and specializes in Internal Medicine. Dr. Zalewski is affiliated with Mercy Hospital St Louis.

    Dr. Zalewski's Experience

    Years in Practice: 37

    Dr. Zalewski's Specialties

    Internal Medicine

    Dr. Zalewski's Education & Training

    Medical School: University of Buffalo, SUNY School of Medicine and Biomedical Sciences; Graduated 1980

    Dr. Zalewski's Rating

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    Overall Rating


    • Explains conditions & treatments
    • Takes time to answer my questions
    • Provides follow-up as needed
    • View All Ratings

    Dr. Zalewski'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
    • Aetna Managed Choice POS Open Access
    • Aetna Signature Administrators PPO
    • Anthem Blue Access PPO
    • Anthem Blue Preferred HMO
    • Anthem Blue Preferred Plus POS
    • Anthem MO Blue Preferred Options
    • Anthem MO Direct Access w/HSA
    • View More

    Dr. Zalewski's Office Information & Appointments

    Office Locations

    Mercy Clinic
    Mercy Clinic Crestwood Internal Medicine

    10024 Watson Rd
    Saint Louis, MO 63126
    (314) 919-2500


    Office Hours and Information

    Fax: (314) 919-2577

    Practice Website:

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    Monday 8:00 AM - 5:00 PM
    Tuesday 7:00 AM - 5:00 PM
    Wednesday 8:00 AM - 5:00 PM
    Thursday 8:00 AM - 5:00 PM
    Friday 8:00 AM - 5:00 PM
    Saturday 8:00 AM - 5:00 PM
    Sunday 8:00 AM - 5:00 PM

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    Dr. Zalewski's Hospital Affiliations

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