DR. MARCUS MAZUR M.D.
NPI 1104141647
Neurological Surgery in Torrance, CA
About Dr. Marcus Mazur M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARCUS MAZUR M.D. (NPI 1104141647) is an individual neurological surgery provider in Torrance, California, licensed in California (C200979) and active in the NPI registry since March 2010. He is enrolled in Medicare PECOS and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 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
Dr. Marcus Mazur M.d. 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 Marcus Mazur reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Santa Monica, CA 90404
- Reassigned Medicare billing, California enrollment
- 461 clinicians in this Medicare group
Las Vegas, NV 89117
- Reassigned Medicare billing, Nevada enrollment
- 6 clinicians in this Medicare group
Salt Lake City, UT 84132
- Reassigned Medicare billing, Utah enrollment
- 338 clinicians in this Medicare group
Salt Lake City, UT 84108
- Reassigned Medicare billing, Utah enrollment
- 65 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 8
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 90503 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 12
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TORRANCE, CA 90503
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 Marcus Mazur's NPI number?
The NPI number for Marcus Mazur is 1104141647. It was assigned to this individual provider in the NPPES registry on March 27, 2010.
Where is Marcus Mazur located?
Marcus Mazur practices at 5215 Torrance Blvd Ste 300, Torrance, CA 90503. The listed phone number is (424) 212-5361.
What is Marcus Mazur's specialty?
The primary specialty registered for this NPI is Neurological Surgery with taxonomy code 207T00000X.
Is Marcus Mazur enrolled in Medicare?
Yes. Marcus Mazur 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 Marcus Mazur's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marcus Mazur reassigns Medicare benefits to 4 organizations: Providence Saint Johns Medical Foundation (Santa Monica, CA), Garber Kaplan Douds PLLC (Las Vegas, NV), University Of Utah Acuity Care Services (Salt Lake City, UT) and University Of Utah Surgical Services (Salt Lake City, UT). 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 Marcus Mazur'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 Marcus Mazur was last updated on July 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.