DR. EDUARDO D. LAM M.D.
NPI 1255410957
Emergency Medicine in Westminster, CA
About Dr. Eduardo D. Lam M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. EDUARDO D. LAM M.D. (NPI 1255410957) is an individual emergency medicine provider in Westminster, California, licensed in California (A93915) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Eduardo D. Lam M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Eduardo Lam reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Chino Hills, CA 91709
- Reassigned Medicare billing, California enrollment
- 5,228 clinicians in this Medicare group
Riverside, CA 92501
- Reassigned Medicare billing, California enrollment
- 2,323 clinicians in this Medicare group
Lake Havasu City, AZ 86403
- Reassigned Medicare billing, Arizona enrollment
- 58 clinicians in this Medicare group
Mesa, AZ 85206
- Reassigned Medicare billing, Arizona enrollment
- 289 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 4
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 92683 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WESTMINSTER, CA 92683
WESTMINSTER, CA 92683
WESTMINSTER, CA 92683
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 Eduardo Lam's NPI number?
The NPI number for Eduardo Lam is 1255410957. It was assigned to this individual provider in the NPPES registry on November 3, 2006.
Where is Eduardo Lam located?
Eduardo Lam practices at 200 Hospital Cir, Westminster, CA 92683. The listed phone number is (818) 340-9988.
What is Eduardo Lam's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Eduardo Lam enrolled in Medicare?
Yes. Eduardo Lam is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Eduardo Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Eduardo Lam reassigns Medicare benefits to 4 organizations: Southern California Permanente Medical Group (Chino Hills, CA), Cep America - California (Riverside, CA), Arizona Emergency Medicine Specialists PC (Lake Havasu City, AZ) and Emergency Physicians Southwest, PC (Mesa, AZ). 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 Eduardo Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Eduardo Lam accept?
Health plans from Blue Cross Blue Shield of Arizona list Eduardo Lam 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 Eduardo Lam was last updated on November 1, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Dr. Eduardo D. Lam, M.D. · NPI 1255410957
Emergency Medicine physician in Westminster, California. Individual provider, active in the CMS NPPES registry since November 3, 2006.
## Identity
- **NPI:** 1255410957 (Entity type: Individual)
- **Enumerated:** November 3, 2006
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A93915 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 200 HOSPITAL CIR, Westminster, CA 92683-3910
- **Phone:** (818) 340-9988 · **Fax:** (818) 587-2493
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Southern California Permanente Medical Group (NPI 1396287082, Chino Hills, CA); Cep America - California (NPI 1386750578, Riverside, CA); Arizona Emergency Medicine Specialists PC (NPI 1134439706, Lake Havasu City, AZ); Emergency Physicians Southwest, PC (NPI 1912053752, Mesa, AZ) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 1, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1255410957) · Data from the CMS NPPES public registry.