Dr. Oliver Ong, MD

Dr. Oliver Ong, MD

Endocrinology, Diabetes & Metabolism  ·  
Male  ·  
46 y/o

Accepting new patients

Dr. Oliver Ong, MD is an endocrinology, diabetes & metabolism specialist in Glendale, CA and has been practicing for 22 years. He specializes in endocrinology, diabetes & metabolism and internal medicine.

Leon Kujmanian MD

544 N Glendale Ave Ste B

Glendale, CA 91206
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Insurance Accepted

  • Aetna
  • Blue Cross Blue Shield
  • Blue Cross Blue Shield of California
  • Blue Shield of California
  • Cigna
  • First Health (Coventry Health Care)
  • LACare
  • Molina Healthcare
  • MultiPlan

Learn about Dr. Ong

Be confident in your decisions by checking out your provider's top areas of care, education, patient reviews and more. Learn about finding the right doctor for you.

Top Care Areas

See how frequently Dr. Ong performs your care needs compared to other doctors.

very high
more than 97% of peers
Diabetes Type 2
very high
more than 97% of peers
more than 87% of peers

Dr. Ong's percentages are based on the rate of treatment compared to peers nationwide from insurance data. Learn more info about our data and this Top Care Areas component.

Care Philosophy

This content was provided by Dr. Ong "Treat patients with respect and compassion in a professional environment."

2  Specialties

  • Endocrinology, Diabetes & Metabolism
  • Internal Medicine

0  Board Certifications

Dr. Ong does not have any board certifications listed.

42  Conditions Treated

Read Less

2  Procedures

  • Diabetes Counseling
  • Endocrine Surgical Procedure

Background Check

0 Malpractice Claims

No malpractice history found for California.

0 Sanctions

No sanctions history found for the years that Healthgrades collects data.

0 Board Actions

No board actions found for the years that Healthgrades collects data.


  • George Washington University / School of Medicine And Health Sciences
    Medical School | Graduated 1996
  • Baylor College Of Med
    Residency Hospital | Completed

Awards & Recognition

Awards & Honors

Dr. Ong has no awards or honors listed.

Media & Publications

Dr. Ong has no media or publications listed.

Languages Spoken

  • English
  • Chinese
  • Spanish
  • Tagalog

Memberships & Professional Affiliations

Dr. Ong does not have any memberships or affiliations listed. If you are Dr. Ong and would like to add memberships or affiliations, please update your profile.

Dr. Ong's Reviews

Likelihood of recommending Dr. Ong to family and friends
16 total reviews (4 have comments)

Likelihood to Recommend (16)

  • 5
  • 4
  • 3
  • 2
  • 1

Dr. Ong's Performance

  • Trustworthiness

  • Explains condition(s) well

  • Answers questions

  • Time well spent


Office & Staff Performance

  • Scheduling

  • Office environment

  • Staff friendliness

  • Average wait time

    10 to 15 minutes

Patient Comments (4)

My Mom and I both see Doctor Ong. He is a caring Doctor who really knows what he's doing. My mother once got confused and took the wrong dose of her diabetes medicine and when I called his office he quickly told us what to do. I would definitely recommend him to any of my friends and family.
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When it comes to anything beyond really basic & obvious thyroid issues this guy has no idea what he is doing. He didn't want to hear what I was saying; he already had it in his mind he only wanted to do basic Synthroid & not investigate any further even though I had much deeper issues related to...more
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Best in class! Dr. Ong is an expert in his field and is amazing with his patients. I have been his patient for over 10 years and I can't thank him enough for all that he's done for me.
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This office is full of crap, they tell me I have an appt with an extended authorization, 5 months later I go for my appt guess what they the Cotten candy haired worker tells me that my authorization has expired months ago, then why the hell did they confirm my appt!!!!!! So stupid!!!!! Don't go to...more
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