ROBERT P ZIMMERMAN MD
NPI 1679558811
Radiology - Radiation Oncology in Los Angeles, CA
About Robert P Zimmerman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ROBERT P ZIMMERMAN MD (NPI 1679558811) is an individual radiation oncology provider in Los Angeles, California, licensed in California (G77580) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Other (1992).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
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
Robert P Zimmerman 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
4Medicare enrollment records show Robert Zimmerman reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 131 clinicians in this Medicare group
Beverly Hills, CA 90210
- Reassigned Medicare billing, California enrollment
Studio City, CA 91604
- Reassigned Medicare billing, California enrollment
- 9 clinicians in this Medicare group
Sherman Oaks, CA 91403
- Reassigned Medicare billing, California enrollment
- 36 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 9
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 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.
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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Robert Zimmerman's NPI number?
The NPI number for Robert Zimmerman is 1679558811. It was assigned to this individual provider in the NPPES registry on December 9, 2005.
Where is Robert Zimmerman located?
Robert Zimmerman practices at 1338 S Hope St, Los Angeles, CA 90015. The listed phone number is (213) 724-5634.
What is Robert Zimmerman's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Robert Zimmerman enrolled in Medicare?
Yes. Robert Zimmerman 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 Robert Zimmerman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Zimmerman reassigns Medicare benefits to 4 organizations: White Memorial Medical Center (Los Angeles, CA), Robert Paul Zimmerman MD Professional Corporation (Beverly Hills, CA), Gennady Rubinstein MD Inc (Studio City, CA) and MD Solutions Medical Corp (Sherman Oaks, 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 Robert Zimmerman'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 Robert Zimmerman was last updated on April 5, 2022. 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.
# Robert P Zimmerman, MD · NPI 1679558811
Radiation Oncology physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since December 9, 2005.
## Identity
- **NPI:** 1679558811 (Entity type: Individual)
- **Enumerated:** December 9, 2005
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **State license:** G77580 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1338 S HOPE ST, Los Angeles, CA 90015-2902
- **Phone:** (213) 724-5634 · **Fax:** (213) 742-5644
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): White Memorial Medical Center (NPI 1215927470, Los Angeles, CA); Robert Paul Zimmerman MD Professional Corporation (NPI 1225586407, Beverly Hills, CA); Gennady Rubinstein MD Inc (NPI 1437329273, Studio City, CA); MD Solutions Medical Corp (NPI 1902837735, Sherman Oaks, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1992
## Record status
- **NPPES last updated:** April 5, 2022
- **Other identifiers:** Medicaid 00G775800 (CA); Other P00263208 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1679558811) · Data from the CMS NPPES public registry.