DR. LYDIA LAM MD
NPI 1366607467
Surgery - Surgical Critical Care in Los Angeles, CA
About Dr. Lydia Lam Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LYDIA LAM MD (NPI 1366607467) is an individual surgical critical care provider in Los Angeles, California, licensed in California (A85764) and active in the NPI registry since July 2008. She is enrolled in Medicare PECOS.
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 (PECOS)
Dr. Lydia Lam Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Lydia Lam reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 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.
Other Providers at the Same Location NPPES 14
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
LOS ANGELES, CA 90033
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 Lydia Lam's NPI number?
The NPI number for Lydia Lam is 1366607467. It was assigned to this individual provider in the NPPES registry on July 28, 2008.
Where is Lydia Lam located?
Lydia Lam practices at 1500 San Pablo St Fl 7, Los Angeles, CA 90033. The listed phone number is (323) 442-6254.
What is Lydia Lam's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.
Is Lydia Lam enrolled in Medicare?
Yes. Lydia Lam is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Lydia Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Lam reassigns Medicare benefits to Usc Care Medical Group, Inc (Los Angeles, 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 Lydia 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 Lydia Lam was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Lydia Lam, MD · NPI 1366607467
Surgical Critical Care physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since July 28, 2008.
## Identity
- **NPI:** 1366607467 (Entity type: Individual)
- **Enumerated:** July 28, 2008
- **Primary specialty:** Surgery - Surgical Critical Care · taxonomy 2086S0102X
- **State license:** A85764 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1500 SAN PABLO ST FL 7, Los Angeles, CA 90033-5313
- **Phone:** (323) 442-6254
## 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:** Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 27, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1366607467) · Data from the CMS NPPES public registry.