Dr. Olivia Choon Ong, MD

Dr. Ong practices at California Eye Specialists Medical Group Inc in Pasadena, California.

Dr. Ong's NPI, 1124021688, was assigned on May 27, 2005. Dr. Ong graduated from David Geffen School of Medicine at UCLA in 1997. Dr. Ong holds California license A66933.

Dr. Ong's primary practice is California Eye Specialists Medical Group Inc, at 2619 E Colorado Blvd, Pasadena, CA 91107 in Los Angeles County. The practice phone is (626) 793-4168.

Dr. Ong's primary practice is California Eye Specialists Medical Group Inc in Pasadena, California. Dmand AI also links Dr. Ong to 3 group practices and clinics and 3 medical groups, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ong practices, 3 sites in all. Vendor and product names are available with a free account.

Glaucoma specialist is Dr. Ong's primary specialty in the NPI Registry, under taxonomy code 207WX0009X. Dr. Ong is board certified in ophthalmology by the American Board of Ophthalmology. Dr. Ong is licensed in California.

Dmand AI lists cataract, cataract surgery with lens implant, glaucoma, glaucoma surgery, secondary membranaous cataract surgery, vision problems and vitreous eye degeneration among the conditions Dr. Ong treats.

CMS data shows 256 Medicare services from Dr. Ong across 6 procedure codes in 2024, for 136 Medicare patients. Medicare paid $26,845 for them.

CMS counts 136 Medicare patients who saw Dr. Ong in 2024. The largest group is 65 to 74, with 64 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 39% are also on Medicaid. Their average risk score is 1.63, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Ong's median patient age at 75, with 59% women.

In 2024, Dr. Ong wrote 13,093 Medicare Part D claims for 2,066 patients. 56% of them were for generic drugs. CMS names the drug for 12,947 of them, across 40 drugs with 11 or more claims each, at $1,533,318 in total drug cost. In 2023, CMS named 13,612 claims across 40 drugs.

Dr. Ong accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 41 procedures of cataract surgery by Dr. Ong, more than 59% of the clinicians it reports for that procedure.

CMS Open Payments shows 335 general payments to Dr. Ong from 29 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Sun Pharmaceutical Industries Inc. paid the most, $1,046.

Dr. Ong graduated from David Geffen School of Medicine at UCLA in 1997.

Dr. Ong is in network with 21 carriers, including Aetna, Blue Cross Blue Shield of Michigan and HCSC. HMO plans come from the most carriers, 13. Check the plan with the practice before a visit.