LY PHUNG LAM O.D.
NPI 1144574732
Optometrist in Colton, CA
About Ly Phung Lam O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LY PHUNG LAM O.D. (NPI 1144574732) is an individual optometrist in Colton, California, licensed in California (33646) and active in the NPI registry since November 2012. She is enrolled in Medicare PECOS and is a graduate of University Of California - School Of Optometry (2012).
NPPES Registry Identity
Specialties & Licenses
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
Ly Phung Lam O.d. 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 Reassignments
3Medicare enrollment records show Ly Lam reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Colton, CA 92324
- Reassigned Medicare billing, California enrollment
- 119 clinicians in this Medicare group
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Fontana, CA 92335
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Cathy Nguyen Od A Professional Optometric Corporation
- 3 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92324 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 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
COLTON, CA 92324
COLTON, CA 92324
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 Ly Lam's NPI number?
The NPI number for Ly Lam is 1144574732. It was assigned to this individual provider in the NPPES registry on November 4, 2012.
Where is Ly Lam located?
Ly Lam practices at 308 N La Cadena Dr, Colton, CA 92324. The listed phone number is (909) 321-4700.
What is Ly Lam's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Ly Lam enrolled in Medicare?
Yes. Ly Lam 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 organizations bill Medicare for Ly Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ly Lam reassigns Medicare benefits to 3 organizations: Unicare Community Health Center, Inc. (Colton, CA), Southern California Permanente Medical Group (Fontana, CA) and Cathy Nguyen, O.D., A Professional Optometric Corporation (Fontana, CA). Each 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 Ly Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ly Lam was last updated on August 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months 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.
# Ly Phung Lam, O.D. · NPI 1144574732
Optometrist provider in Colton, California. Individual provider, active in the CMS NPPES registry since November 4, 2012.
## Identity
- **NPI:** 1144574732 (Entity type: Individual)
- **Enumerated:** November 4, 2012
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 33646 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 308 N LA CADENA DR, Colton, CA 92324-2946
- **Phone:** (909) 321-4700
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Unicare Community Health Center, Inc. (NPI 1447604582, Colton, CA); Southern California Permanente Medical Group (NPI 1689606196, Fontana, CA); Cathy Nguyen, O.D., A Professional Optometric Corporation (NPI 1164205613, Fontana, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California - School Of Optometry, class of 2012
## Record status
- **NPPES last updated:** August 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1144574732) · Data from the CMS NPPES public registry.