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    Dr. Warren D. Johnston, MD

    Cardiovascular Disease

    • (714) 543-5555

    Dr. Johnston's Overview

    Dr. Johnston graduated from the University of Rochester School of Medicine and Dentistry in 1975. He works in Orange, CA and specializes in Cardiovascular Disease. Dr. Johnston is affiliated with Hoag Memorial Hospital, Saint Jude Medical Center and St Joseph Hospital Of Orange.

    Dr. Johnston's Experience

    Years in Practice: 41

    Dr. Johnston's Specialties

    Cardiovascular Disease

    Dr. Johnston's Education & Training

    Medical School: University of Rochester School of Medicine and Dentistry; Graduated 1975

    Dr. Johnston'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. Johnston'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 HMO Deductible Plan CA only
    • Aetna Managed Choice POS
    • Aetna Managed Choice POS Open Access
    • Aetna Savings Plus of CA
    • Aetna Signature Administrators PPO
    • BCBS Blue Card PPO
    • Blue Cross CA PPO Prudent Buyer Small Group
    • Blue Cross CA Advantage PPO Preferred DirectAccess Plus
    • View More

    Dr. Johnston's Office Information & Appointments

    Office Locations

    St Joseph Heritage Medical Group
    St Josephs Heritage Healthcare

    1140 W La Veta Ave Ste 430
    Orange, CA 92868
    (714) 543-5555


    Office Hours and Information

    Fax: (714) 543-5585

    Practice Website: Not Available

    Accepting New Patients: Yes

    Medicare Accepted: Yes

    Medicaid Accepted: Yes

    Monday 9:00 AM - 5:00 PM
    Tuesday 9:00 AM - 5:00 PM
    Wednesday 9:00 AM - 5:00 PM
    Thursday 9:00 AM - 5:00 PM
    Friday 9:00 AM - 5:00 PM
    Saturday Closed
    Sunday Closed

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