Lam Phung, MD
NPI 1992231682 · Ophthalmology Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1992231682
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A171632 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
489 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| New Patient Complete Exam of Visual System92004 | 86 | $164 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 69 | $139 |
| Established Patient Complete Exam of Visual System92014 | 64 | $140 |
| Photography of the Retina92250 | 52 | $40 |
| Ultrasound Scan to Determine Eye Length and Lens Power76519 | 42 | $66 |
| Established Patient Problem Focused Exam of Visual System92012 | 39 | $99 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 163 | 49 |
| Prednisolone Acetate | 143 | 93 |
| Moxifloxacin Hclbrand: Moxifloxacin | 98 | 57 |
| Ketorolac Tromethamine | 97 | 55 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 84 | 34 |
| Cyclosporinebrand: Restasis | 45 | — |
| Timolol Maleate | 32 | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,197 across 36 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 9428 Valley Blvd Ste 201Rosemead, CA 91770-1514Phone: (629) 921-2889Fax: (626) 921-5638
Registry dates
- Enumerated
- 2017-05-02
- Last updated
- 2023-01-19
- Certified
- 2023-01-19
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.