Olivia Choon Ong, MD
NPI 1124021688ActiveIndividual· Ophthalmology, Glaucoma Specialist· Monrovia, CA
Ophthalmology, Glaucoma Specialist (MD) in Monrovia, California, trained at University of California, Geffen School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $1,582,651 for 13,093 claims, against $39,236 paid for services in 2024. Alcon Vision LLC was the largest of 13 companies reporting payments in 2025, $1,455 in all, mostly food and beverage.
Overview
| NPI | 1124021688 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 27, 2005 |
| Last updated in NPPES | Jun 19, 2024 |
| Certified by provider | Jun 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology, Glaucoma Specialist Primary | 207WX0009X | A66933 | CA |
| Ophthalmology | 207W00000X | A66933 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Ophthalmology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 136 |
|---|---|
| Services billed | 299 across 25 procedure codes |
| Paid by Medicare | $39,236 |
Part D prescriptions in 2024
| Prescriptions (claims) | 13,093 · 25,096 30-day fills |
|---|---|
| Patients | 2,066 |
| Total drug cost | $1,582,651 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Ophthalmology |
Medical groups
- Azul Vision IncWest Hills, CA · 48 clinicians
- California Eye Specialists Medical Group IncGlendora, CA · 23 clinicians
Industry payments (Open Payments)
- 2025$1,455 · 43 payments from 13 companies
- 2024$1,010 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alcon Vision LLC | $436.20 | 14 |
| Abbvie Inc. | $249.24 | 6 |
| New World Medical,inc. | $162.89 | 2 |
| Sight Sciences, Inc. | $121.79 | 1 |
| Thea Pharma Inc. | $114.85 | 5 |
What the 2025 payments were for
- Food and Beverage$1,455 · 43 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records