LAM PHUNG MD
NPI 1992231682
Ophthalmology in Fullerton, CA
About Lam Phung Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LAM PHUNG MD (NPI 1992231682) is an individual ophthalmology provider in Fullerton, California, licensed in California (A171632) and active in the NPI registry since May 2017. She is enrolled in Medicare PECOS, maintains a secondary practice location in Rosemead, and is a graduate of University Of Miami, Lm Miller School Of Medicine (2017).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Lam Phung Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Lam Phung reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Rosemead, CA 91770
- Reassigned Medicare billing, California enrollment
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92835 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FULLERTON, CA 92835
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Lam Phung's NPI number?
The NPI number for Lam Phung is 1992231682. It was assigned to this individual provider in the NPPES registry on May 2, 2017.
Where is Lam Phung located?
Lam Phung practices at 1400 N Harbor Blvd Ste 101, Fullerton, CA 92835. The listed phone number is (714) 888-2080.
What is Lam Phung's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Lam Phung enrolled in Medicare?
Yes. Lam Phung is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Lam Phung's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lam Phung reassigns Medicare benefits to Elson Lai, MD, A Professional Corporation (Rosemead, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Lam Phung's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Lam Phung accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross and Blue Shield of Montana, Blue Cross and Blue Shield of Oklahoma, Blue Cross and Blue Shield of Texas and Providence Health Plan list Lam Phung as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Lam Phung was last updated on January 19, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Lam Phung, MD · NPI 1992231682
Ophthalmology physician in Fullerton, California. Individual provider, active in the CMS NPPES registry since May 2, 2017.
## Identity
- **NPI:** 1992231682 (Entity type: Individual)
- **Enumerated:** May 2, 2017
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A171632 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1400 N HARBOR BLVD STE 101, Fullerton, CA 92835-4107
- **Phone:** (714) 888-2080
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Elson Lai, MD, A Professional Corporation (NPI 1053741280, Rosemead, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Miami, Lm Miller School Of Medicine, class of 2017
## Record status
- **NPPES last updated:** January 19, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1992231682) · Data from the CMS NPPES public registry.