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Jonathan Ou, MD
Practice closed to new patients.

Jonathan Ou, MD

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

Primary Office

2707 South Diamond Bar Boulevard
Suite 104
Diamond Bar, CA 91765
(909) 594-8331
(909) 869-6631
Recommend this Physician
4.7 out of 5 (44 Ratings | 11 Comments)


Very goods.
*Doctor Ou is a very good doctor -
Does not do a thorough evaluation. Always rushing and doesn't take time to hear the patient's concerns.
*Johnathan Ou is a very good dr. & I feel please to have him for our dr.
Mainly have good experiences with him.
11 Total Comments Page 1 2 3   Next

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
  • Internship:
    Loma Linda University
  • Residency:
    Loma Linda University
  • 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

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