Are you a healthcare professional?
Is this your profile?
background
background
Dr. Jonathan Ou, MD

Dr. Jonathan Ou, MD

Internal Medicine*
15+ years of experience

Dr. Jonathan Ou, MD is an internist in Diamond Bar, CA and has over 15 years of experience in the medical field. He graduated from University of Southern California Keck School of Medicine in 2009. He is affiliated with Providence St. Jude Medical Center. He is accepting new patients and telehealth appointments.

4.7 Star Rating
Based on 13 reviews 4.7 Star Rating (13 reviews)

Jonathan Ou, MD

2707 S Diamond Bar Blvd Ste 104 Diamond Bar, CA 91765
Telehealth available
(909) 594-8331

At a Glance

  • Areas of Expertise
    Dr. Ou specializes in the areas of Internal Medicine & Pediatrics. • See board certifications
  • Explains Conditions Well
    Patients said this doctor explains conditions well. • See reviews
  • Offers Telehealth
    This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital
    America’s 50 Best Hospitals for Surgical Excellence Award™ • See hospitals
ADVERTISEMENT
healthgrades-rx

Save money with free prescription discounts

Optum Perks and Healthgrades are subsidiaries of RVO Health.

Experience Check

Search for experience in a specific area

Learn more about experience and why treatment frequency matters

Insurance Check

Search for your insurance carrier and choose your plan type

Dr. Ou's Reviews

Likelihood to recommend Dr. Ou

4.7
13 ratings, 3 with a written review
5 star
92%
92%
4 star
0%
0%
3 star
0%
0%
2 star
0%
0%
1 star
8%
8%

Your trust is our top concern.

We strive to keep reviews honest, trustworthy, and fair.

Doctors can not pay for good reviews, nor can they pay to have negative reviews removed.

We monitor all reviews to ensure they comply with our guidelines and don’t include personal information, profanity, libel, defamation, harassment, obscenity or fraud.

Any reviews that are deemed fraudulent or violate our guidelines will be removed immediately.

All reviews are confirmed and audited before publication, and community members have the ability to flag inappropriate content for further review by our team.

First visit with Dr. Ou. He's very personable and easy to talk to. The staff are nice and the process is quick.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Oct 19, 2019
×Post a ResponseAre you Dr. Ou?
My wife and I selected Dr. Ou several years ago as our primary care physician when we changed insurance companies and our former physician was no longer in the network. We have both transitioned to Medicare Advantage. Dr. Ou is a younger physician, who stays on top of the current medical literature, which is important to us. He is easy to talk to, and it's generally possible to get a same-day appointment when necessary. We have been very happy with Dr. Ou and recommend him highly.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
Helpful
Max H in Pomona, CA – Jul 14, 2018
×Post a ResponseAre you Dr. Ou?
His office doesn't overbook patients so you don't have to wait in the waiting room very long. I went to see him without an appointment and he was able to see me right away. He listens and takes great notes of your condition. He urges you to call him if your have any questions or concerns. They utilize an e-health portal online and you can access your PHR.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
13 others found this helpful
Helpful
Raymond L. in Walnut, CA – Mar 22, 2016
×Post a ResponseAre you Dr. Ou?

Leave a review

How was your experience with Dr. Ou?

Know Before You Go

About Me

care philosophy

As an Internal Medicine/Pediatrics physician, I believe in preventive care and lifestyle changes are the first step in treating chronic diseases.

  • Internal Medicine

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Loma Linda University

    Internship Hospital, 2010

  • University Of Southern California Keck School Of Medicine

    Medical School, 2009
American Board of Medical Specialties®
American Board of Internal Medicine®
- 
Internal Medicine
American Board of Pediatrics®
- 
Pediatrics
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

Learn more about medical license public record check

  • English

  • Chinese

  • Mandarin

  • Spanish

Online Care for Prescription Refills (Sponsored)

Locations

Jonathan Ou, MD

Jonathan Ou, MD2707 S Diamond Bar Blvd Ste 104 Diamond Bar, CA 91765
1

Affiliated Hospitals

  • Providence St. Jude Medical Center

    101 E Valencia Mesa Dr
    Fullerton, CA 92835
    Recipient of 21
    hospital awards

    America’s 50 Best Hospitals for Surgical Excellence Award™ (2025, 2024)

    Top 5% in the nation for consistently delivering clinical quality

    America's 100 Best Hospitals Award™ (2023)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

    How patients felt about the care they received at this hospital.

    86%
    Patients said they were given information about recovering at home

    2% higher than the national average

    77%
    Patients who gave a rating of 9 or 10

    11% higher than the national average

    View all patient feedback
Learn more about how Healthgrades measures Hospital Quality