Social Workers in Ontario, CA
Browse 38 Social Worker providers listed in NPPES with a practice address in Ontario, California.
How Ontario compares with the U.S.
Ontario has 21 Social Workers per 100,000 residents, about 52% of the U.S. rate of 41.
That is 38 active Social Workers with a practice address in Ontario, for a population of 180,547.
The California rate is 26 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.
None of the Social Workers in Ontario are listed in the CMS Medicare file.
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 Registry addresses can be out of date.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 · Methodology
Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).
Ashley Marie Allen
Social Worker
Laura I Alvarado , MSW
Social Worker
Veronica Carreon
Social Worker
Paula R Crespin
Social Worker
Margarita Edith Fuentes , MSW
Social Worker
Diana Berenice Galvan , MSW
Social Worker
Eduardo Gonzalez
Social Worker
Mariana Gonzalez Campos
Social Worker
Patricia Maria Guerra
Social Worker
Guillermina Hall
Social Worker
Rufis Jmaes Johnson
Social Worker
Elisa Petra Lee , MSW
Social Worker
Karen Manuela Lemus Lares
Social Worker
Jacqueline Manzo
Social Worker
Lizette Casandra Mendoza , ACSW
Social Worker
Patricia Moore
Social Worker
Aleida Murcia
Social Worker
Linda Navarro , ASW
Social Worker
Kayla Neal
Social Worker
Martha Nunez , ACSW
Social Worker
Frequently Asked Questions about Social Worker in Ontario
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.
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.
Other Specialties in Ontario
Social Workers in Other California Cities
Cities with the most listed practitioners first.