JAN M. GRUBER MD
NPI 1770654600
Anesthesiology in Los Angeles, CA
About Jan M. Gruber Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JAN M. GRUBER MD (NPI 1770654600) is an individual anesthesiology provider in Los Angeles, California, licensed in California (A95742) and active in the NPI registry since November 2006. He 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)
Jan M. Gruber Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Jan Gruber reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- 13,921 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LOS ANGELES, CA 90027
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 Jan Gruber's NPI number?
The NPI number for Jan Gruber is 1770654600. It was assigned to this individual provider in the NPPES registry on November 13, 2006.
Where is Jan Gruber located?
Jan Gruber practices at 4733 W Sunset Blvd, Los Angeles, CA 90027. The listed phone number is (323) 783-4011.
What is Jan Gruber's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Jan Gruber enrolled in Medicare?
Yes. Jan Gruber is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Jan Gruber's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jan Gruber reassigns Medicare benefits to Southern California Permanente 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 Jan Gruber'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 Jan Gruber was last updated on December 15, 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.
# Jan M. Gruber, MD · NPI 1770654600
Anesthesiology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since November 13, 2006.
## Identity
- **NPI:** 1770654600 (Entity type: Individual)
- **Enumerated:** November 13, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A95742 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 4733 W SUNSET BLVD, Los Angeles, CA 90027-6021
- **Phone:** (323) 783-4011
## 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:** Southern California Permanente Medical Group (NPI 1134151657, Los Angeles, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 15, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1770654600) · Data from the CMS NPPES public registry.