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John Mersch III, MD

John Mersch III, MD

(949) 388-1798
Primary Specialties
  • Pediatrics
     (Board Certified)
  • Affiliations
    Mission Hospital Affiliated Physicians
    Southern OC Pediatric Assoc.
    Languages Spoken
    Accepting New Patients
    Primary Office
    777 Corporate Drive, Suite 250
    Ladera Ranch, 92694
    (949) 388-6495
    Monday through Friday:
    8:00 a.m. - 4:30 p.m.
    After hours care available in Ladera Ranch.

    Web Page:

    Experience & Education

    Other Specialties/Certifications
    American Board of Pediatrics
    Medical School:
    University of Southern California

    Children’s Hospital, Los Angeles

    Children’s Hospital, Los Angeles, Pediatric Chief Resident
    Areas of Expertise
    Sports medicine, asthma, ADD

    Insurance Information

    Insurance ID Numbers

    Aetna: 298055
    Blue Cross: 0XL118
    Blue Shield: 00G408870
    CIGNA: 3502933014
    CIGNA Select (SJH): 3502933016
    Health Net: 3207024895
    United Healthcare: 183520088

    Physician Bio

    Dr. Mersch says that even though the bureaucracy of pediatrics has changed remarkably since his beginnings in private practice, it is still fun to go into an exam room and interact with the patient and his/her parents.

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