Careers With St. Joseph Health

Our Values are more than just words.

They form the heart and soul of St. Joseph Health and are the prime reason we attract and retain high-caliber employees who believe in the sanctity of their work in our faith-based setting.

Recent News

What does

What does "Healthy" actually mean?

| Contributor: OC Catholics Read More
Queen to receive $1.5 million for cancer care

Queen to receive $1.5 million for cancer care

| Contributor: Napa Valley Register Read More
Where tech meets health: One Year of 3D Mammography at St. Joseph Hospital

Where tech meets health: One Year of 3D Mammography at St. Joseph Hospital

| Contributor: kiem-tv Read More

Here you can find news articles and press releases from St. Joseph Health and it's locations.

About St. Joseph Health

SJH provides a full range of care facilities including 16 acute care hospitals, home health agencies, hospice care, outpatient services, skilled nursing facilities, community clinics and physician groups. All of our hospital and home health entities are accredited by the Joint Commission. In our award-winning facilities, SJH maintains a "continuum of care," matched to the diverse needs of the urban centers, smaller cities and rural communities who depend on us every day.

Giving back to the community. St. Joseph Health System Office

John Mersch III, MD

Specialty
  • Pediatrics
    (Board Certified)
Additional Language Spoken
English
Address
777 Corporate Dr.
Suite 250
Ladera Ranch, CA 92694
Accepting New Patients

Primary Office

Address
777 Corporate Dr.
Suite 250
Ladera Ranch, CA 92694
Get Directions
Phone
(949) 388-1798
Fax
(949) 388-6495
Hours
Mon - Fri 8 a.m. - 4:30 p.m. After hours care available in Ladera Ranch.

Secondary Office

Phone
(949) 770-0513
Fax
(949) 770-2941

More Information

Website
www.socpa.com
Medical Groups & Affiliations
  • Mission Hospital Affiliated Physicians
  • Southern OC Pediatric Assoc.
  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Pediatrics
    Education
    • Medical School
      University of Southern California, CA
    • Internship
      Children's Hospital- Los Angeles, CA
    • Residency
      Children's Hospital- Los Angeles, CA
    Areas of Interest

    Pediatrics

  • Biography

    Biography

    Biography

    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.

    Certifications
    American Board of Pediatrics
    Areas of Expertise
    Sports medicine, asthma, ADD
  • Insurance Accepted

    Insurance Accepted

    Insurance ID Numbers

    Aetna: *298055
    Blue Cross:*0XL118
    Blue Shield: 00G408870
    CIGNA: 3502933014
    CIGNA Select: 3502933017
    Health Net: 3207024895
    Health Net Senior: n/a
    SCAN: n/a
    United Healthcare: *0183520088

    *Provider ID is the same for both HMO and Medicare Advantage Plans