New Search
Jonathan Ou, MD
Practice closed to new patients.

Jonathan Ou, MD

(909) 594-8331
Primary Specialties
  • Internal Medicine
    (Board Certified)
Secondary Specialties
  • Pediatrics
    (Board Certified)
Medical Groups & Affiliations
  • St. Jude Affiliated Physician
  • Additional Languages Spoken
    Cantonese, Chinese, Spanish

Primary Office

2707 S. Diamond Bar Blvd.
Suite 104
Diamond Bar, CA 91765
(909) 594-8331
(909) 869-6631
Recommend this Physician
4.8 out of 5 (52 Ratings | 4 Comments)


Great dr.
*Dr. Ou continues to go above and beyond as my provider. He always has my best interest at the forefront of his decisions when it comes to my health.
4 Total Comments

Physician Bio

As an Internal Medicine and Pediatrics physician, I believe the best foundation of good health care is evidence-based practice, continuity of care, and patient empathy. Maintaing good relations with colleagues is also of vital importance, thus emphasizing the need for frequent and clear communication.


  • Medical School:
    Keck USC School of Medicine - Los Angeles, CA
  • Internship:
    Loma Linda University - Loma Linda, CA
  • Residency:
    Loma Linda University - Loma Linda, CA
  • Board Certified in Internal Medicine
  • Board Certified in Pediatrics

Insurance ID Numbers

Aetna: *691732
Blue Cross: *0DL213
Blue Shield: 00A1131760
CIGNA: 8982226004
CIGNA Select: 8982226006
Health Net: 3206195883
Health Net Senior: n/a
SCAN: n/a
United Healthcare: *0183440070

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

This is Your Hospital

Tell Us Why St. Jude is Your Hospital.

Tell My Story
This is Your Hospital