PATRICK H LAM MD
NPI 1831691534
Anesthesiology in West Hollywood, CA
About Patrick H Lam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PATRICK H LAM MD (NPI 1831691534) is an individual anesthesiology provider in West Hollywood, California, licensed in California (A153910) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS and is a graduate of Howard University College Of Medicine (2016).
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
Patrick H Lam 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 Reassignments
3Medicare enrollment records show Patrick Lam reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90048
- Reassigned Medicare billing, California enrollment
- 2,118 clinicians in this Medicare group
Orange, CA 92869
- Reassigned Medicare billing, California enrollment
- 168 clinicians in this Medicare group
East Palo Alto, CA 94303
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: County Of San Mateo
- Also billed through NPI 1831268580 (California)
- 597 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 3
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.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Patrick Lam's NPI number?
The NPI number for Patrick Lam is 1831691534. It was assigned to this individual provider in the NPPES registry on March 8, 2018.
Where is Patrick Lam located?
Patrick Lam practices at 8700 Beverly Blvd Ste 4209 Cedars-Sinai Medical Center, Dept. Of Anesthesiology, West Hollywood, CA 90048. The listed phone number is (310) 423-1682.
What is Patrick Lam's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Patrick Lam enrolled in Medicare?
Yes. Patrick 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 Patrick Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Patrick Lam reassigns Medicare benefits to 3 organizations: Cedars-Sinai Medical Care Foundation (Los Angeles, CA), Orange Coast Anesthesia Inc (Orange, CA) and San Mateo County (East Palo Alto, 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 Patrick 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 Patrick Lam was last updated on March 8, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.