Maruja Diaz-Arjonilla, MD

4.8 out of 5 (73 Ratings)
  • Endocrinology, Diabetes & Metabolism
    (Board Certified)
Additional Language Spoken
2501 E. Chapman Ave.
Suite 202
Orange, CA 92869
Accepting New Patients
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Primary Office

2501 E. Chapman Ave.
Suite 202
Orange, CA 92869
Get Directions
(714) 628-3313
(714) 633-7403

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Medical Groups & Affiliations
  • St. Joseph Heritage Medical Group


  • Meet The Doctor

    Specialties & Education

    Primary Specialties
    • Endocrinology, Diabetes & Metabolism
      (Board Certified)
    Secondary Specialties
    • Internal Medicine
      (Board Certified)
    Education & Training
    • Medical School
      Universidad Central de Venezuela, Caracas, Venezuela - 1990
    • Internship
      Universidad Central de Venezuela, Caracas, Venezuela - 1992
    • Residency
      UCSF - Fresno- Fresno, CA - 2007
    • Fellowship
      Harbor, UCLA Medical Center- Los Angeles, CA - 2009
  • Biography


    As an endocrinologist, I care for many conditions including: diabetes, thyroid disease, calcium and metabolism disorders and adrenal and pituitary gland conditions. I practice patient-centered care, emphasizing in two-way communication and patient and family education.
  • It seems to me the *Dr. Maruja Diaz is very nice and listen to patients, very friendly.
    Very happy with my dr. *Dr. Diaz.
    I wish *Dr. Diaz could be my general practitioner. She is very thorough & explains everything.
    excellent care! The Dr listened, reviewed and gave me recommendations regarding my medication, vitamins and possible reasons for various symptoms. I was amazed by her detail to what I was experiencing and her knowledge of medication vs vitamins and current studies
    *Dr. Diaz is great! She is very caring & informative!
    8 Total Comments Page 1 2   Next
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