Marcus Mazur, M.D.
Neurological Surgery Physician · Torrance, CA
Marcus Mazur, M.D. is a neurological surgery physician with a practice address in Torrance, California, and NPI 1104141647, issued on Mar 27, 2010. Check the license (California C200979, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Marcus Mazur
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License numbers
- C200979 CA
8153504-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 5215 Torrance Blvd Ste 300, Torrance, CA 90503
- Phone
- (424) 212-5361
- Enumerated
- Mar 27, 2010
- Record last updated
- Jul 30, 2025
- Medicare enrollment
- Enrolled (PECOS I20180709000879); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 929 in California → Look up another NPI →
Also registered at 5215 Torrance Blvd Ste 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jared Chow, PA-CPhysician Assistant1518481704
- Natalie Diaz, M.D.Neurology Physician1871516492
- Steven Dillavou, P.A.-C.Physician Assistant1003171851
- Jonathan Finley, FNP-BCFamily Nurse Practitioner1336752542
- Jian Guan, M.D.Neurological Surgery Physician1811262009
- Jean-Philippe LangevinNeurological Surgery Physician1902047228
Verify Marcus Mazur in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C200979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average neurological surgery physician in 2024
24 Medicare Part D claims for 13 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 88.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,999.85
25 payments; by number, the most common kind was food and beverage; the largest payer was Synthes GmbH. The 5,377 providers of this specialty with any payment received $14,925.58 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Providence Saint Johns Medical FoundationTorrance, CA
- University OF Utah Surgical ServicesSalt Lake City, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcus Mazur among 929 neurological surgery physician records in California
Marcus Mazur, M.D. is one of 929 neurological surgery physician records with a practice address in California. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 64% of them.
- NPI issued2010 · 64% of these records are older, 32% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2010 · median 2005 among the 612 with a school on file
- Record last updated2025 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in California
There are 929 neurological surgery physician records in California.
All 929 in California → Every provider in Torrance → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Jian Guan, M.D.Torrance, CA 905031811262009
- Jean-Philippe LangevinTorrance, CA 905031902047228
- Walavan Sivakumar, M.D.Torrance, CA 905031952627911
- Duncan McBride, M.D.Torrance, CA 905021700828704
- Paula Eboli, M.D.Torrance, CA 905051043413438
- Vladimir Ljubimov, MDTorrance, CA 905051093169393
- Tianzan Zhou, M.D.Torrance, CA 905051760845044
- Giyarpuram Prashant, M.D.Redwood City, CA 904631710306048
Common questions
What is Marcus Mazur, M.D.'s NPI number?
Marcus Mazur, M.D.'s National Provider Identifier (NPI) is 1104141647, issued on Mar 27, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Marcus Mazur, M.D. located?
The NPPES record lists a practice address at 5215 Torrance Blvd Ste 300, Torrance, CA, 90503. Phone: (424) 212-5361. Providers update this record themselves, so call before visiting.
How can I verify Marcus Mazur, M.D.'s license?
NPPES lists California license number C200979, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marcus Mazur, M.D. prescribe under Medicare Part D?
In 2024, Marcus Mazur, M.D. had 24 Medicare Part D claims for 13 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Marcus Mazur, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.