John Michael Martinez, M.D.
Sports Medicine (Family Medicine) Physician · Mill Valley, CA
John Michael Martinez, M.D. is a sports medicine (family medicine) physician with a practice address in Mill Valley, California, and NPI 1003844507, issued on Jun 30, 2006. Check the license (California A74529, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Michael Martinez
- Credential
- M.D.
- Primary taxonomy
- Sports Medicine (Family Medicine) Physician 207QS0010X
- License number
- A74529 CA
Self-reported in NPPES; status is on the state search - Practice location
- 750 Redwood Hwy Frontage RD Ste 1204, Mill Valley, CA 94941
- Phone
- (415) 384-4778
- Enumerated
- Jun 30, 2006
- Record last updated
- Nov 29, 2023
- Fax
- (415) 384-4779
- Medicare enrollment
- Enrolled (PECOS I20050126000571); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 1996
- Entity
- Type 1 · individual
8 nearest sports medicine (family medicine) physician records → All 266 in California → Look up another NPI →
Also registered at 750 Redwood Hwy Frontage RD Ste 1204
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Laura Sasso, PA-CMedical Physician Assistant1386186302
Verify John Michael Martinez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A74529Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average sports medicine (family medicine) physician in 2024
49 Medicare Part D claims for 35 beneficiaries, against an average of 855 among the 2,237 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 MIPS final score for 2023 (Medicare payment program): 96.5 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $21.16
1 payment: food and beverage; the largest payer was Abbvie Inc. The 1,218 providers of this specialty with any payment received $781.49 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 one group practice
- Ucsf Health Medical FoundationSan Bruno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Michael Martinez among 266 sports medicine (family medicine) physician records in California
John Michael Martinez, M.D. is one of 266 sports medicine (family medicine) physician records with a practice address in California. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 73% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1996 · median 2012 among the 190 with a school on file
- Record last updated2023 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207QS0010X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Sports Medicine (Family Medicine) Physician providers in California
There are 266 sports medicine (family medicine) physician records in California.
All 266 in California → Every provider in Mill Valley → Sports Medicine (Family Medicine) Physician nationwide →
The 8 sports medicine (family medicine) physician records with the nearest ZIP codes
- Kristin Wingfield Williams, M.D.Mill Valley, CA 949411790701225
- Jeffrey Blue, M.D.Campbell, CA 950081801900220
- Svetlana Dani, M.D.Campbell, CA 950081669886206
- Teresita GomezCampbell, CA 950081174020192
- Tiffany Gorman, MDCampbell, CA 950081932123106
- Jeffrey Peng, M.D.Campbell, CA 950081538541255
- Torsten Rotto, MDCampbell, CA 950081932787538
- Jullian Nguyen, MDHollister, CA 950231548764400
Common questions
What is John Michael Martinez, M.D.'s NPI number?
John Michael Martinez, M.D.'s National Provider Identifier (NPI) is 1003844507, issued on Jun 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Michael Martinez, M.D. located?
The NPPES record lists a practice address at 750 Redwood Hwy Frontage RD Ste 1204, Mill Valley, CA, 94941. Phone: (415) 384-4778. Providers update this record themselves, so call before visiting.
How can I verify John Michael Martinez, M.D.'s license?
NPPES lists California license number A74529, 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 John Michael Martinez, M.D. prescribe under Medicare Part D?
In 2024, John Michael Martinez, M.D. had 49 Medicare Part D claims for 35 beneficiaries; the average among sports medicine (family medicine) physician prescribers was 855. Part D covers Medicare prescriptions only.
What is John Michael Martinez, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.5 of 100. 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.