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Social Worker - Clinicals in Ontario, CA

Browse 137 Social Worker - Clinical providers listed in NPPES with a practice address in Ontario, California.

137 Healthcare Providers

How Ontario compares with the U.S.

Ontario has 76 clinicians in Social Worker - Clinical per 100,000 residents, 18% lower than the U.S. rate of 93.

That is 137 active clinicians in Social Worker - Clinical with a practice address in Ontario, for a population of 180,547.

The California rate is 92 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.

50% of clinicians in Social Worker - Clinical in Ontario listed in the CMS Medicare file (10 of 20) accept Medicare assignment. That is lower than the California share of 75%.

Only 20 of 137 active clinicians in Social Worker - Clinical in Ontario 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.

None of the 20 clinicians in Social Worker - Clinical in Ontario listed in the CMS Medicare file have a CMS telehealth indicator. Some may still offer telehealth; ask the office.

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).

Social Worker - Clinical Medicare (PECOS) Enrollment & Ordering Eligibility

Medicare enrollment and order/referring eligibility listed by CMS for Social Worker - Clinical practitioners in Ontario, CA

Source: CMS PECOS
PECOS Enrolled Specialists 43 In Ontario, CA
Part B Lab & Imaging Eligible 48 Diagnostic Referrals
DME Ordering Eligible 50 Durable Medical Equipment
Home Health Agency Referrals 0 HHA Ordering Eligible
Showing 1โ€“20 of 137 providers
With recent CMS data first, then Aโ€“Z

Kirsten Carter , LCSW

Social Worker - Clinical

Active NPI Status
2295 S Vineyard Ave, Mob 'd', Ste. 230, Ontario, CA 917617925
Phone: 9097243328
NPI Identifier 1316363054
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Jennifer Villalba , MSW, LCSW

Social Worker - Clinical

Active NPI Status
437 N Euclid Ave, Ontario, CA 917623456
Phone: 9093785840
NPI Identifier 1225178353
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Ana L Aguilar , LCSW

Social Worker - Clinical

Active NPI Status
1515 S Bon View Ave, Ontario, CA 917614408
Phone: 9099306793
NPI Identifier 1033510995
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Sally Amaya , LCSW

Social Worker - Clinical

Active NPI Status
4684 Ontario Mills Pkwy Ste 200, Ontario, CA 917645151
Phone: 9096670896
NPI Identifier 1013270719
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Dr. Nathan Ambrosio , EDD LCSW

Social Worker - Clinical

Active NPI Status
1101 S Milliken Ave Ste E, Ontario, CA 917618112
Phone: 9492325402
NPI Identifier 1356132948
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Jennifer Anguiano , LCSW

Social Worker - Clinical

Active NPI Status
3401 Centre Lake Dr Fl 2, Ontario, CA 917611201
Phone: 3239195863
NPI Identifier 1144817800
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Leonila Araneta , LCSW

Social Worker - Clinical

Active NPI Status
2295 S Vineyard Ave, Ontario, CA 917617925
Phone: 9099880379
NPI Identifier 1861771974
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Victoria Arce

Social Worker - Clinical

Active NPI Status
1420 S Milliken Ave Ste 508, Ontario, CA 917612337
Phone: 9099832020
NPI Identifier 1588048144
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Andrea Armas

Social Worker - Clinical

Active NPI Status
1420 S Milliken Ave, Ontario, CA 917612336
Phone: 9099882418
NPI Identifier 1558861484
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Olga Avitia

Social Worker - Clinical

Active NPI Status
1419 N Orange Pl, Ontario, CA 917642229
Phone: 9512959392
NPI Identifier 1083493209
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Michelle Lynn Ballard

Social Worker - Clinical

Active NPI Status
3200 E Guasti Rd Ste 100, Ontario, CA 917618661
Phone: 9092484412
NPI Identifier 1982900783
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Bryn W. Barkan , LCSW

Social Worker - Clinical

Active NPI Status
855 N Euclid Ave, Ontario, CA 917622762
Phone: 9099832020
NPI Identifier 1538282991
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Carla Barnes

Social Worker - Clinical

Active NPI Status
1556 S Sultana Ave, Ontario, CA 917614238
Phone: 9094186923
NPI Identifier 1598197121
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Mayra Beas

Social Worker - Clinical

Active NPI Status
2940 Inland Empire Blvd, Ontario, CA 917644898
Phone: 9094581350
NPI Identifier 1609232065
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Brianna M Belcher , LCSW

Social Worker - Clinical

Active NPI Status
855 N Euclid Ave, Ontario, CA 917622729
Phone: 9099832020
NPI Identifier 1558669648
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Jermaine Bennett , LCSW

Social Worker - Clinical

Active NPI Status Accepts Medicare Assignment
2940 Inland Empire Blvd, Ontario, CA 917644898
Phone: 9094581350
NPI Identifier 1053761247
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Joseph Bermudez

Social Worker - Clinical

Active NPI Status
2940 Inland Empire Blvd, Ontario, CA 917644898
Phone: 9094581517
NPI Identifier 1659670271
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Heather Lynn Bernhardt-Nevarez , LCSW

Social Worker - Clinical

Active NPI Status
2295 S Vineyard Ave, Ontario, CA 917617925
Phone: 9097243335
NPI Identifier 1689177735
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Silvia Eugenia Blanco

Social Worker - Clinical

Active NPI Status
1556 S Sultana Ave, Ontario, CA 917614238
Phone: 9094186923
NPI Identifier 1407408552
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Janelle Alyse Bonura

Social Worker - Clinical

Active NPI Status
855 N Euclid Ave, Ontario, CA 917622729
Phone: 9099832020
NPI Identifier 1881171387
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Frequently Asked Questions about Social Worker - Clinical in Ontario

How do I check a Social Worker - Clinical 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.