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

Covenant Children’s NICU Caregivers Assist with Hurricane Harvey Evacuation

Covenant Children’s NICU Caregivers Assist with Hurricane Harvey Evacuation

| Contributor: kcbd Read More
Systems Embark on Making Health Care 'Friendly' for the Elderly

Systems Embark on Making Health Care 'Friendly' for the Elderly

| Contributor: Catholic Health World Read More
St. Joseph Hoag Health Hospitals Rank Among California's Best in Latest U.S. News & World Report's Listings of Best Hospitals

St. Joseph Hoag Health Hospitals Rank Among California's Best in Latest U.S. News & World Report's Listings of Best Hospitals

| Contributor: U.S. News & World Report 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

Mercedes Tomioka, MD

Specialty
  • Geriatric Medicine
    (Board Certified)
  • Internal Medicine
    (Board Certified)
Additional Language Spoken
Japanese, Spanish
Address
16300 Sand Canyon Ave.
Suite 311
Irvine, CA 92618

Primary Office

Address
16300 Sand Canyon Ave.
Suite 311
Irvine, CA 92618
Get Directions
Phone
(949) 791-3101
Fax
(949) 791-3112

Secondary Office

Address
16300 Sand Canyon Ave
Suite 612
, CA

More Information

Website
www.hoag.org/Hoag-Medical-Group/Pages/Mercedes-Tomioka.aspx
Medical Groups & Affiliations
  • Hoag Affiliated Physicians
  • Hoag Medical Group

Video

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Geriatric Medicine
    • Internal Medicine
    Education
    • Medical School
      Universidad Nacional Mayor de San Marcos - 1996
    • Residency
      National Hospital
    • Internship
      St. Barnabas Hospital
    • Residency
      St. Barnabas Hospital - 2002
    • Fellowship
      University of CA Davis Medical Center - 2003
  • Biography

    Biography

    Biography

    A native speaker of Spanish and conversational Japanese, Dr. Tomioka brings cultural diversity, excellent skills, and her compassionate nature to her profession as a physician. Her grandparents immigrated to Peru prior to World War II and that is where Dr. Tomioka spent her early years surrounded by family, which included many physicians. Always concerned about everyone around her, her family encouraged her to become a physician to fulfill her desire to help others.

    Practicing since 2003, Dr. Tomioka chose a career in Internal Medicine as she truly appreciates the challenge. She enjoys being exposed to a broad variety of skills and applying her knowledge to help her patients. She is excited to lend her talent and innovative ideas to Hoag Medical Group.

    Dr. Tomioka has extensive training and always pursues ways to improve her skills and knowledge. She attended medical school at Universidad Nacional Mayor de San Marcos in Lima, Peru, completed her residency in Internal Medicine at St. Barnabas Hospital (affiliated with The New York Hospital - Cornell Medical Center), and finished with a fellowship in Geriatrics at UC Davis.

    Outside of work, Dr. Tomioka enjoys spending time with her husband and 2 year old daughter. Her focus is on bringing new experiences to her daughter and they often travel and visit museums during their weekend excursions.

    Certifications
    Board Certifications:
    - Internal Medicine
    - Geriatric Medicine
  • Insurance Accepted

    Insurance Accepted

    Accepted Health Plans
    • HMO - AETNA
    • HMO - ANTHEM SELECT ADVANTAGE (MEDICARE ADVANTAGE PLAN FOR CA)
    • HMO - BLUE SHIELD 65 PLUS CHOICE
    • HMO - BLUE SHIELD 65 PLUS SENIOR
    • HMO - BLUE SHIELD OF CALIFORNIA
    • HMO - CIGNA
    • HMO - CIGNA (HOAG/SJHS PREFERRED)
    • HMO - SCAN
    • MDCR - MEDICARE
    • OAP - CIGNA
    • PPO - AETNA
    • PPO - ANTHEM MEDICARE PREFERRED STANDARD
    • PPO - BEECH STREET
    • PPO - BLUE SHIELD OF CALIFORNIA
    • PPO - CIGNA
    • PPO - COVENTRY (FORMERLY CCN/FIRST HEALTH/AFFORDABLE)
    • PPO - HEALTH NET
    • PPO - INTERPLAN / HEALTHSMART
    • PPO - MULTIPLAN/PHCS
    • PPO - ORANGE COUNTY FOUNDATION
    • PPO - PRIVATE HEALTH CARE SYSTEMS (PHCS)
    • PPO - UNITED HEALTH CARE SYSTEMS
    Insurance ID Numbers

    Aetna: *847719
    Blue Cross: *YNL031
    Blue Shield: 00A796040
    CIGNA: 8576503
    CIGNA Select: 8576503026
    Health Net: 3620131416
    Health Net Senior: n/a
    SCAN: 996-135989
    United Healthcare: *0279830033

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

  • More Info

    More Info