Martin F. Mazar, MD
Critical Care Medicine (Internal Medicine) Physician · Walnut Creek, CA
Martin F. Mazar, MD is a critical care medicine (internal medicine) physician with a practice address in Walnut Creek, California, and NPI 1962580043, issued on Nov 2, 2006. Check the license (California G48179, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Martin F. Mazar
- Credential
- MD
- Primary taxonomy
- Critical Care Medicine (Internal Medicine) Physician 207RC0200X
- License number
- G48179 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1425 S Main St, Walnut Creek, CA 94596
- Phone
- (925) 295-4000
- Enumerated
- Nov 2, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G481790 CA
- Entity
- Type 1 · individual
Also registered at 1425 S Main St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Martin F. Mazar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48179Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Critical Care Medicine (Internal Medicine) Physician providers in California
There are 723 critical care medicine (internal medicine) physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other critical care medicine (internal medicine) physician records in California
- Mariam Abdelkader, MDFresno, CA1689022824
- Hazem Abdelsalam, M.D.Torrance, CA1346793312
- Unknown Abdul Hameed Zaid, M.B,B.SLoma Linda, CA1679908800
- Glen Abergel, M.D.Oxnard, CA1093743924
- Ayham Aboeed, M.D.Bakersfield, CA1093969750
- Henry Abrons, M.D.Berkeley, CA1821001470
- Noman Absar, MDVallejo, CA1205908951
- Natalie Achamallah, M.D.West Hollywood, CA1255881546
- Cresencio AdamePalo Alto, CA1750021564
- Allen Adams, M.D.Los Angeles, CA1700862794
Common questions
What is Martin F. Mazar, MD's NPI number?
Martin F. Mazar, MD's National Provider Identifier (NPI) is 1962580043, issued on Nov 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Martin F. Mazar, MD located?
The NPPES record lists a practice address at 1425 S Main St, Walnut Creek, CA, 94596. Phone: (925) 295-4000. Providers update this record themselves, so call before visiting.
How can I verify Martin F. Mazar, MD's license?
NPPES lists California license number G48179, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.