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Healthcare Providers & Facilities in Antioch, CA

Public healthcare directory of 2,210 individual practitioners and 368 healthcare facilities located in Antioch, California.

2,210 Practitioners
368 Facilities
173 Specialties

Medical Specialties in Antioch

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

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All Specialties in Antioch

Specialties with enough public records for a comparison with U.S. figures, besides those named above, plus the 60 largest of 159 more with at least one listed practitioner. Number of practitioners in brackets.

Dietary & Nutritional Service Providers

Nursing Service Providers

Nursing Service Related Providers

Podiatric Medicine & Surgery Service Providers

Respiratory, Developmental, Rehabilitative and Restorative Service Providers

Speech, Language and Hearing Service Providers

Featured Healthcare Providers in Antioch

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

Grace Liu

Internal Medicine - Cardiovascular Disease

Medicare Accepted
4053 Lone Tree Way, Antioch, CA
Phone: 9257767725
NPI 1013379882

Dr. Elyas Parsa , DO

Emergency Medicine

Medicare Accepted
4053 Lone Tree Way, Antioch, CA
Phone: 9257563499
NPI 1902034168

Dr. Denise Romero , MD

Orthopaedic Surgery

Medicare Accepted
2350 Country Hills Dr Ste A, Antioch, CA
Phone: 9257570800
NPI 1194922542

Jason Thompson , PA

Physician Assistant - Medical

3901 Lone Tree Way, Antioch, CA
Phone: 9257797200
NPI 1285157818

Dr. Kevin Ackerman , DDS

Dentist

3701 Lone Tree Way, Antioch, CA
Phone: 9257540899
NPI 1922274232

Lorena Diaz-Rodriguez , NP

Nurse Practitioner - Family

5829 Lone Tree Way Ste D, Antioch, CA
Phone: 9252043715
NPI 1649869389

Largest Cities in California

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

How Antioch compares with the U.S.

Compared with the U.S. as a whole, Antioch has more Hospitalists (2.6x), clinicians in Obstetrics & Gynecology (1.3x) and clinicians in Internal Medicine (1.3x) per 100,000 residents.

It has fewer Nurse Practitioners (33% of the U.S. rate), clinicians in Nurse Practitioner - Family (33%) and Physician Assistants (47%) per 100,000 residents.

Antioch has 1,897 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.

90% of clinicians in Antioch listed in the CMS Medicare file (261 of 290) accept Medicare assignment. That is similar to the California share of 91%.

Only 290 of 2,210 active clinicians in Antioch 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.

28% of clinicians in Antioch listed in the CMS Medicare file (81 of 290) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to 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).

Antioch CMS Healthcare & Financial Disclosures

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

Source: CMS public datasets

Healthcare operations in Antioch, CA encompass 2,210 active individual practitioners and 368 registered medical facilities across 173 clinical specialties.

According to CMS Medicare Part D analytics for 2024, prescription drug volume in Antioch accounts for $40.8 Million across 311,572 prescription claims. 472 local practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $0.1 Million in payments reported by companies to 140 local practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $40.8M 311,572 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $0.1M 140 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 472 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $23.1M 375,486 Services Performed Source: data.cms.gov

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

Part B Lab & Imaging Eligible: 395
Durable Medical Equipment (DME): 404
Home Health Agency (HHA): 341
Source: CMS Order and Referring