Lam Phung, MD
Ophthalmology Physician · Fullerton, CA
Lam Phung, MD is an ophthalmology physician with a practice address in Fullerton, California, and NPI 1992231682, issued on May 2, 2017. Check the license (California A171632, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lam Phung
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- A171632 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1400 N Harbor Blvd Ste 101, Fullerton, CA 92835
- Phone
- (714) 888-2080
- Enumerated
- May 2, 2017
- Record last updated
- Jan 19, 2023
- Medicare enrollment
- Enrolled (PECOS I20220330000315); accepts Medicare assignment
- Medical or professional school
- University Of Miami, Lm Miller School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 1400 N Harbor Blvd Ste 101
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Charles Luu, O. D.Optometrist1306831649
- Charlene Tran, MDOphthalmology Physician1740923150
- Jeffrey Winston, M.D.Ophthalmology Physician1316972649
Verify Lam Phung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A171632Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average ophthalmology physician in 2024
791 Medicare Part D claims for 216 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 40% of claims.
Most prescribed
- Latanoprost163 claims
- Prednisolone Acetate143 claims
- Moxifloxacin98 claims
- Ketorolac Tromethamine97 claims
- Dorzolamide-Timolol84 claims
- Restasis45 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,197.12
36 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Elson Lai MD A Professional CorporationRosemead, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lam Phung among 2,899 ophthalmology physician records in California
Lam Phung, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 88% of them.
- NPI issued2017 · 88% of these records are older, 10% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2017 · median 2001 among the 1,907 with a school on file
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Fullerton → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- J Berbos, M.D.Fullerton, CA 928351467596114
- Matthew Kim, M.D.Fullerton, CA 928351770514465
- Omar Krad, M.D.Fullerton, CA 928351669635132
- Dagny Luong, MDFullerton, CA 928351790044626
- William Mosier, MDFullerton, CA 928351063553378
- Matthew NobeFullerton, CA 928351821313461
- William Peloquin, M.D.Fullerton, CA 928351932261336
- Leslie Pham, MDFullerton, CA 928351568500411
Common questions
What is Lam Phung, MD's NPI number?
Lam Phung, MD's National Provider Identifier (NPI) is 1992231682, issued on May 2, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Lam Phung, MD located?
The NPPES record lists a practice address at 1400 N Harbor Blvd Ste 101, Fullerton, CA, 92835. Phone: (714) 888-2080. Providers update this record themselves, so call before visiting.
How can I verify Lam Phung, MD's license?
NPPES lists California license number A171632, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Lam Phung, MD prescribe under Medicare Part D?
In 2024, Lam Phung, MD had 791 Medicare Part D claims for 216 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.