LOUIS M ZUCKER MD
NPI 1124128145
Internal Medicine - Rheumatology in Los Angeles, CA
About Louis M Zucker Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LOUIS M ZUCKER MD (NPI 1124128145) is an individual rheumatology provider in Los Angeles, California, licensed in California (G10927) and active in the NPI registry since September 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of University Of Southern California Keck School Of Medicine (1964).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Louis M Zucker 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 Louis Zucker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90015
- Reassigned Medicare billing, California enrollment
- 2,052 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 90015 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90015
LOS ANGELES, CA 90015
LOS ANGELES, CA 90015
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 Louis Zucker's NPI number?
The NPI number for Louis Zucker is 1124128145. It was assigned to this individual provider in the NPPES registry on September 22, 2006.
Where is Louis Zucker located?
Louis Zucker practices at 1025 W Olympic Blvd, Los Angeles, CA 90015. The listed phone number is (213) 623-2225.
What is Louis Zucker's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.
Is Louis Zucker enrolled in Medicare?
Yes. Louis Zucker 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 Louis Zucker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Louis Zucker reassigns Medicare benefits to Healthcare Partners Affiliates Medical Group (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 Louis Zucker'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 Louis Zucker was last updated on January 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.
# Louis M Zucker, MD · NPI 1124128145
Rheumatology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since September 22, 2006.
## Identity
- **NPI:** 1124128145 (Entity type: Individual)
- **Enumerated:** September 22, 2006
- **Primary specialty:** Internal Medicine - Rheumatology · taxonomy 207RR0500X
- **State license:** G10927 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1025 W OLYMPIC BLVD, Los Angeles, CA 90015-1329
- **Phone:** (213) 623-2225 · **Fax:** (213) 861-5859
## 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:** Healthcare Partners Affiliates Medical Group (NPI 1659312593, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Southern California Keck School Of Medicine, class of 1964
## Record status
- **NPPES last updated:** January 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124128145) · Data from the CMS NPPES public registry.