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Healthcare Providers & Facilities in Martinez, CA

Public healthcare directory of 1,824 individual practitioners and 145 healthcare facilities located in Martinez, California.

1,824 Practitioners
145 Facilities
175 Specialties

Medical Specialties in Martinez

Select a specialty to view practitioner listings, practice locations, and qualifications.

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All Specialties in Martinez

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 165 more with at least one listed practitioner. Number of practitioners in brackets.

Chiropractic Providers

Dietary & Nutritional Service Providers

Eye and Vision Services Providers

Nursing Service Related Providers

Physician Assistants & Advanced Practice Nursing Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Martinez

Practitioner profiles in Martinez, CA with recent CMS Medicare or Open Payments data.

Dr. Lori Panossian , MD

Psychiatry & Neurology - Neurology

150 Muir Rd, Martinez, CA
Phone: 9253722398
NPI 1134380918

Dr. Helena Frischtak , MD

Student in an Organized Health Care Education/Training Program

Medicare Accepted
2500 Alhambra Ave Ofc, Martinez, CA
Phone: 6083333232
NPI 1225514755

Dr. Mana Pirnia , DO

Family Medicine

2500 Alhambra Ave, Martinez, CA
Phone: 9253705200
NPI 1801225610

Dr. Wesley Tay , MD

Student in an Organized Health Care Education/Training Program

Medicare Accepted
2500 Alhambra Ave, Martinez, CA
Phone: 9253705000
NPI 1134534738

Dr. Zachary Nicholas , MD

Family Medicine

2500 Alhambra Ave, Martinez, CA
Phone: 9253705000
NPI 1659996700

Dr. Christopher Farnitano , MD

Family Medicine

2500 Alhambra Avenue, Martinez, CA
Phone: 9253705110
NPI 1770673832

Largest Cities in California

Other California cities with a full directory, by the number of active practitioners listed in NPPES.

How Martinez compares with the U.S.

Compared with the U.S. as a whole, Martinez has more clinicians in Family Medicine (11.1x), clinicians in Psychiatry & Neurology - Psychiatry (5.5x) and Pharmacists (4.7x) per 100,000 residents.

Martinez has 4,943 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

City counts use the city name in each clinician's practice address. That postal city can cover a larger or smaller area than the city limits the Census Bureau uses for population, and many clinicians list only one address even if they work in several places. Cities with hospitals or large medical centers often list more specialists than the number of residents alone would suggest, because patients also come from nearby areas.

68% of clinicians in Martinez listed in the CMS Medicare file (123 of 180) accept Medicare assignment. That is lower than the California share of 91%.

Only 180 of 1,824 active clinicians in Martinez appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

21% of clinicians in Martinez listed in the CMS Medicare file (37 of 180) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is lower than the California share of 28%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com ยท Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Martinez CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data for Martinez, CA

Source: CMS public datasets

Healthcare operations in Martinez, CA encompass 1,824 active individual practitioners and 145 registered medical facilities across 175 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Martinez accounts for $49.2 Million across 312,354 prescription claims. 445 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.0 Million in payments reported by companies to 79 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $49.2M 312,354 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.0M 79 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 445 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $1.7M 20,598 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Martinez

Part B Lab & Imaging Eligible: 438
Durable Medical Equipment (DME): 481
Home Health Agency (HHA): 408
Source: CMS Order and Referring