Lam Phung, MD
NPI 1992231682ActiveIndividual· Ophthalmology· Fullerton, CA
Ophthalmology (MD) in Fullerton, California, trained at University of Miami, Lm Miller School of Medicine (class of 2017). Their prescriptions cost Medicare Part D more than their services did: $85,285 for 791 claims, against $50,372 paid for services in 2024. Bausch & Lomb Americas Inc. was the largest of 7 companies reporting payments in 2025, $424.04 in all, mostly food and beverage.
Overview
| NPI | 1992231682 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 2, 2017 |
| Last updated in NPPES | Jan 19, 2023 |
| Certified by provider | Jan 19, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Ophthalmology Primary | 207W00000X | A171632 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 182 |
|---|---|
| Services billed | 510 across 16 procedure codes |
| Paid by Medicare | $50,372 |
Part D prescriptions in 2024
| Prescriptions (claims) | 791 · 1,237 30-day fills |
|---|---|
| Patients | 216 |
| Total drug cost | $85,285 |
| Generic share | 60% of claims |
Education and affiliations
| Medical school | University of Miami, Lm Miller School of Medicine |
|---|---|
| Graduation year | 2017 |
| Medicare specialty | Ophthalmology |
Medical group
- Elson Lai MD A Professional CorporationRosemead, CA · 2 clinicians
Industry payments (Open Payments)
- 2025$424.04 · 15 payments from 7 companies
- 2024$1,197 · 36 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bausch & Lomb Americas Inc. | $86.35 | 2 |
| Sun Pharmaceutical Industries Inc. | $84.14 | 3 |
| Tarsus Pharmaceuticals, Inc. | $63.64 | 2 |
| Dompe US, Inc. | $62.84 | 3 |
| Alcon Vision LLC | $57.43 | 2 |
What the 2025 payments were for
- Food and Beverage$424.04 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 ophthalmologists in Fullerton · All ophthalmologists in California