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Physician Assistants in Simi Valley, CA

Browse 35 Physician Assistant providers listed in NPPES with a practice address in Simi Valley, California.

35 Healthcare Providers

How Simi Valley compares with the U.S.

Simi Valley has 28 Physician Assistants per 100,000 residents, about 57% of the U.S. rate of 49.

That is 35 active Physician Assistants with a practice address in Simi Valley, for a population of 125,634.

The California rate is 37 per 100,000 residents.

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.

89% of Physician Assistants in Simi Valley listed in the CMS Medicare file (16 of 18) accept Medicare assignment. That is similar to the California share of 92%.

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.

17% of Physician Assistants in Simi Valley listed in the CMS Medicare file (3 of 18) 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).

Physician Assistant Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Physician Assistant practitioners in Simi Valley, CA

Source: CMS PECOS
PECOS Enrolled Specialists 26 In Simi Valley, CA
Part B Lab & Imaging Eligible 25 Diagnostic Referrals
DME Ordering Eligible 29 Durable Medical Equipment
Home Health Agency Referrals 25 HHA Ordering Eligible
Showing 1โ€“20 of 35 providers
With recent CMS data first, then Aโ€“Z

Zade Neil Batarseh , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2525 Erringer Rd, Simi Valley, CA 930652352
Phone: 8055271404
NPI Identifier 1306493267
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Leslie Buchanan , PA

Physician Assistant

Active NPI Status
2925 Sycamore Dr, Suite 204-205, Simi Valley, CA 930651207
Phone: 8055789620
NPI Identifier 1841267622
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Khristina Caldarelli , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2525 Erringer Rd, Simi Valley, CA 930652352
Phone: 8055271404
NPI Identifier 1811622301
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Nazaneen Cauthron , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2755 Alamo St Ste 100, Simi Valley, CA 930651345
Phone: 8052107400
NPI Identifier 1851693451
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Robert Alexander Fielding , PA

Physician Assistant

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2840 E Los Angeles Ave, Simi Valley, CA 930653937
Phone: 8055268360
NPI Identifier 1477152353
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Tanner James Green

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2975 Sycamore Dr, Simi Valley, CA 930651201
Phone: 8059556107
NPI Identifier 1093473647
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Kyla Jeanne Hendricks , PA

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2525 Erringer Rd, Simi Valley, CA 930652352
Phone: 8055271404
NPI Identifier 1962587717
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Jocelyn Iliana Herrera , PA-C

Physician Assistant

Active NPI Status
1190 Carmel Dr, Simi Valley, CA 930654115
Phone: 8054332600
NPI Identifier 1497421176
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Aaron Highsmith , PA

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2515 Glenhurst Ct, Simi Valley, CA 930635319
Phone: 8057508082
NPI Identifier 1124290093
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Heather Hirsh , PA

Physician Assistant

Active NPI Status
158 Macaw Ln, Simi Valley, CA 930653152
Phone: 8055841930
NPI Identifier 1245402130
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Quynh-Chau Hoang

Physician Assistant

Active NPI Status
2525 Erringer Rd, Simi Valley, CA 930652352
Phone: 8055271404
NPI Identifier 1568930402
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Megan Ann Leeper , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment
4370 Eve Rd, Simi Valley, CA 930632323
Phone: 8059154400
NPI Identifier 1922595701
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Jessica Martin , PA-C

Physician Assistant

Active NPI Status
2840 E Los Angeles Ave, Simi Valley, CA 93065
Phone: 8055268360
NPI Identifier 1770090201
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Christina Massuros , PA

Physician Assistant

Active NPI Status
3605 Alamo St Ste 200, Simi Valley, CA 930632186
Phone: 8055788550
NPI Identifier 1386305076
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Brenda Margaret Mcalpin , PA-C

Physician Assistant

Active NPI Status
1227 E Los Angeles Ave, Simi Valley, CA 930652871
Phone: 8055824000
NPI Identifier 1114517745
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Andrea Mcfadden , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment
1950 E Los Angeles Ave, Simi Valley, CA 930653503
Phone: 8053061440
NPI Identifier 1295072676
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Smita Darshan Mehta , PA

Physician Assistant

Active NPI Status Accepts Medicare Assignment
2925 Sycamore Dr, Suite 204-205, Simi Valley, CA 930651207
Phone: 8055789620
NPI Identifier 1073580866
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Nancy Menges , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2925 Sycamore Dr Ste 204-205, Simi Valley, CA 930651207
Phone: 8055789620
NPI Identifier 1992175434
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Mark B Oechsli , PA-C

Physician Assistant

Active NPI Status
4531 Alamo St, Sierra Vista Family Medical Clinic, Simi Valley, CA 93063
Phone: 8055203248
NPI Identifier 1497748149
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Luke Jonathan Paik , PA-C

Physician Assistant

Active NPI Status Accepts Medicare Assignment Telehealth Services Available
2840 E Los Angeles Ave, Simi Valley, CA 930653937
Phone: 8055268360
NPI Identifier 1215698535
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Frequently Asked Questions about Physician Assistant in Simi Valley

How do I check a Physician Assistant 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.