Dr John Michael Martinez, MD - Medicare Family Practice in Mill Valley, CA

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Dr John Michael Martinez, MD is a medicare enrolled "Family Medicine - Sports Medicine" physician in Mill Valley, California. He went to Albany Medical College Of Union University and graduated in 1996 and has 30 years of diverse experience with area of expertise as Family Practice. He is a member of the group practice Ucsf Health Medical Foundation and his current practice location is 750 Redwood Hwy Frontage Rd Ste 1204, Mill Valley, California. You can reach out to his office (for appointments etc.) via phone at (415) 384-4778.

Dr John Michael Martinez is licensed to practice in California (license number A74529) and he also participates in the medicare program. He accepts medicare assignments (which means he accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and his NPI Number is 1003844507.

Contact Information

Dr John Michael Martinez, MD
750 Redwood Hwy Frontage Rd Ste 1204,
Mill Valley, CA 94941-2483
(415) 384-4778
(415) 384-4779

Map and Direction




Physician's Profile

Full NameDr John Michael Martinez
GenderMale
SpecialityFamily Practice
Experience30 Years
Location750 Redwood Hwy Frontage Rd Ste 1204, Mill Valley, California
Accepts Medicare AssignmentsYes. He accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Dr John Michael Martinez attended and graduated from Albany Medical College Of Union University in 1996
  NPI Data:
  • NPI Number: 1003844507
  • Provider Enumeration Date: 06/30/2006
  • Last Update Date: 11/29/2023
  Medicare PECOS Information:
  • PECOS PAC ID: 0547210692
  • Enrollment ID: I20050126000571

Medical Identifiers

Medical identifiers for Dr John Michael Martinez such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1003844507NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207QS0010XFamily Medicine - Sports Medicine A74529 (California)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
Ucsf Health Medical Foundation943623987860

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Dr John Michael Martinez allows following entities to bill medicare on his behalf.
Entity NameDignity Health Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1700803418
PECOS PAC ID: 7810800661
Enrollment ID: O20031107000709
Entity NameUcsf Health Medical Foundation
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1922124866
PECOS PAC ID: 9436239878
Enrollment ID: O20080110000320

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Dr John Michael Martinez is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Dr John Michael Martinez, MD
3400 Data Dr,
Rancho Cordova, CA 95670-7956

Ph: (916) 379-2861		Dr John Michael Martinez, MD
750 Redwood Hwy Frontage Rd Ste 1204,
Mill Valley, CA 94941-2483

Ph: (415) 384-4778

Reviews and Comments


Family Medicine Doctors in Mill Valley, CA

Dr. Gerald C. Freedman, M.D.
Family Medicine
Medicare: Not Enrolled in Medicare
Practice Location: 61 Camino Alto, #107, Mill Valley, CA 94941
Phone: 415-388-0775    Fax: 415-388-6542
David Cole, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 750 Redwood Hwy Frontage Rd Ste 1210, Mill Valley, CA 94941
Phone: 888-663-6331    Fax: 415-252-7176
Dr. Sarah Deanna Garayalde, DO
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 750 Redwood Hwy Frontage Rd Ste 1210, Mill Valley, CA 94941
Phone: 888-663-6331    
Dr. Curtis Frank Robinson, M.D.
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 619 E Blithedale Ave, Ste A, Mill Valley, CA 94941
Phone: 415-388-2801    Fax: 415-388-2803
Dr. Michael David Fox, MD
Family Medicine
Medicare: Medicare Enrolled
Practice Location: 15 Escalon Dr, Mill Valley, CA 94941
Phone: 415-515-7773    Fax: 415-388-2829
Robert E Belknap, MD
Family Medicine
Medicare: Accepting Medicare Assignments
Practice Location: 655 Redwood Hwy, Suite 375, Mill Valley, CA 94941
Phone: 415-384-0506    

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.