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Recent News

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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.

Thanh N Nguyen, MD

  • Internal Medicine
    (Board Certified)
Additional Language Spoken
Vietnamese, English
Medical Groups & Affiliations
  • St. Joseph Hospital Affiliated Physicians
Theresa Thanh Ngoc Nguyen, MD Inc.
15576 Brookhurst Street
Suite B
Westminster, CA 92683
Accepting New Patients

Primary Office

Theresa Thanh Ngoc Nguyen, MD Inc.
15576 Brookhurst Street
Suite B
Westminster, CA 92683
Get Directions
(714) 775-8090
(714) 775-2998
Mon - Wed: 9 a.m. - 5:30 p.m. Fri: 9 a.m. - 5:30 p.m.

More Information

  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Internal Medicine
      (Board Certified)
    Education & Training
    • Medical School
      University of California San Diego - 1995
    • Internship
      University Of California Davis Medical Center - 1996
    • Residency
      University Of California Davis Medical Center - 1998
  • Biography


    Dr. Theresa Thanh Nguyen is an internist in Westminster, California. She received her medical degree from University of California San Diego School of Medicine and has been in practice for more than 20 years.
  • Insurance Accepted

    Insurance Accepted

    Insurance ID Numbers
    Aetna: *659800
    Blue Cross: *0WX555
    Blue Shield: 100076372019
    CIGNA: 7281832016
    CIGNA Select: 7281832039
    Health Net: 3204074123
    Health Net Senior: 5148074123
    SCAN: 864-15993
    United Healthcare: *0183470457
    *Provider ID is the same for both HMO and Medicare Advantage Plans