Accepting New Patients
Offers Video Visits

Maruja Diaz Arjonilla, MD

4.7 out of 5 (95 Ratings)
  • Endocrinology
    (Board Certified)
Spanish, English
Primary Address | Office Details
2212 East 4th Street
Suite 304

Santa Ana, CA 92705

Phone: (714) 288-3230

Fax: (714) 571-7719

Medical Groups & Affiliations
  • St. Joseph Heritage Medical Group
  • St. Joseph Hospital Affiliated Physicians
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to Your Provider
(714) 288-3230

Request Appointment

  • dr Diaz is always prepared for our appt.
    I see Dr. Diaz for my thyroid and she's very patient and explains clearly. she really seems to care.!I really like her and glad I'm under her care.
    appointment was on the phone, doctor was late 1/2 hour. I tried calling the office and no ne picks up the phone that's always a challenge with heritage. When I call they put me through the call center again a challenge. Hoag and Memorial Care call center runs very smoothly I've been tempted to switch.
    this was a telehealth visit not in person
    I had a positive experience.
    28 Total Comments Page 1 2 3 4 5 6   Next
  • Meet The Provider
    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. Read More
    Primary Specialties
    Primary Specialties
    • Endocrinology
      (Board Certified)
    Other Specialties
    Other Specialties
    • Internal Medicine
    • American Association of Clinical Endocrinologists
    • The Endocrine Society
    Areas of Interest
    Areas of Interest
    Diabetes, Osteoporosis, Autoimmune Disorders, Thyroid Disorders, Endocrine Disorders
    Board Certifications

    American Board of Internal Medicine, Endocrinology Diabetes and Metabolism

    Education & Training
    • Medical School
      Universidad Central de Venezuela - 1990
    • Internship
      Universidad Central de Venezuela - 1992
    • Residency
      UCSF - Fresno - 2007
    • Fellowship
      Harbor, UCLA Medical Center - 2009
  • Primary Location

St. Joseph Heritage Santa Ana - Suite 304

  • Address
    2212 East 4th Street, Suite 304,
    Santa Ana, CA 92705
    Get Directions
  • Phone
    (714) 288-3230
    (714) 571-7719
  • Hours of Operation
    M, Tu, Wed, Fri: 8 a.m. - 5 p.m. Thu: 8 a.m. - 12 p.m.

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