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Emergency Medicine Providers in Antioch, CA

Browse 25 Emergency Medicine providers listed in NPPES with a practice address in Antioch, California.

25 Healthcare Providers

How Antioch compares with the U.S.

Antioch has 21 clinicians in Emergency Medicine per 100,000 residents, close to the U.S. rate of 21.

That is 25 active clinicians in Emergency Medicine with a practice address in Antioch, for a population of 116,477.

That is close to the California rate of 20.

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.

100% of clinicians in Emergency Medicine in Antioch listed in the CMS Medicare file (16 of 16) accept Medicare assignment. That is similar to the California share of 97%.

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.

6% of clinicians in Emergency Medicine in Antioch listed in the CMS Medicare file (1 of 16) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the California share of 5%.

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).

Emergency Medicine Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Emergency Medicine practitioners in Antioch, CA

Source: CMS PECOS
PECOS Enrolled Specialists 23 In Antioch, CA
Part B Lab & Imaging Eligible 23 Diagnostic Referrals
DME Ordering Eligible 23 Durable Medical Equipment
Home Health Agency Referrals 23 HHA Ordering Eligible
Showing 1โ€“20 of 25 providers
With recent CMS data first, then Aโ€“Z

Dr. Andre H. Baitoo , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
4501 Sand Creek Rd, Antioch, CA 945318687
Phone: 9258133695
NPI Identifier 1417035577
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Dr. Ivan S. Cavaliere , MD

Emergency Medicine

Active NPI Status
3400 Delta Fair Blvd, Antioch, CA 945094004
Phone: 9257795000
NPI Identifier 1174601231
View Full Profile

Dr. Patricio Martin Chavez , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797273
NPI Identifier 1770502148
View Full Profile
Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257793522
NPI Identifier 1821351909
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Dr. Aaron Quinn Cutshaw , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
4501 Sand Creek Rd, Antioch, CA 945318687
Phone: 9258136500
NPI Identifier 1285863712
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Dr. Raj V. Dasari , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3400 Delta Fair Blvd, Antioch, CA 945094004
Phone: 9257795000
NPI Identifier 1053499145
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Dr. Mary Antionette Fitzsimons , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797273
NPI Identifier 1053330431
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Dr. William O.s. Francis , MD

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 4086274080
NPI Identifier 1689967309
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Dr. Sean Grammy , DO

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797200
NPI Identifier 1982832127
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Dr. Charlotte Hull , DO

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 94509
Phone: 9257797200
NPI Identifier 1972958627
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Dr. Duoc T. Nguyen , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3400 Delta Fair Blvd, Antioch, CA 945094004
Phone: 9257795000
NPI Identifier 1609954791
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Dr. Khanh D Nguyen , MD

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 5103502657
NPI Identifier 1033130711
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Dr. Elyas Parsa , DO

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
4053 Lone Tree Way, Antioch, CA 945316210
Phone: 9257563499
NPI Identifier 1902034168
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Dr. Ambreen Rahman , DO

Emergency Medicine

Active NPI Status
4053 Lone Tree Way, Antioch, CA 945316210
Phone: 5102476436
NPI Identifier 1750693545
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Dr. Kathleen A Regacho , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 94509
Phone: 9257793522
NPI Identifier 1023331865
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Dr. Russell Gerald Rodriguez , MD

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797273
NPI Identifier 1245259647
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Dr. Thomas Edward Schutz , MD

Emergency Medicine

Active NPI Status Accepts Medicare Assignment
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797273
NPI Identifier 1942229349
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Michael Seftchick

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9258222764
NPI Identifier 1770773418
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Dr. James Chung Shieh , MD

Emergency Medicine

Active NPI Status
3901 Lone Tree Way, Antioch, CA 945096200
Phone: 9257797273
NPI Identifier 1639198930
View Full Profile

Dr. Daniel M. Sonnier , MD

Emergency Medicine

Active NPI Status
3400 Delta Fair Blvd, Antioch, CA 945094004
Phone: 9257795000
NPI Identifier 1528132131
View Full Profile

Frequently Asked Questions about Emergency Medicine in Antioch

How do I check a Emergency Medicine practitioner's license?

Each practitioner profile shows the NUCC taxonomy code and any state license number the practitioner reported to NPPES, plus a link to the California licensing board lookup. NPPES entries are self-reported; current license status is published only by the state board.

Why is a practitioner missing from this list?

This list shows NPI records that are active in NPPES. A deactivated NPI keeps its profile with the deactivation date and practice history; find it with the site search by name or NPI number.