Steve J. Corsaro
Addiction (Substance Use Disorder) Counselor · Ontario, CA
Steve J. Corsaro is an addiction (substance use disorder) counselor with a practice address in Ontario, California, and NPI 1619126463, issued on Sep 17, 2008. Check the license with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Steve J. Corsaro
- Primary taxonomy
- Addiction (Substance Use Disorder) Counselor 101YA0400X
- Practice location
- 317 W F St, Ontario, CA 91762
- Phone
- (909) 986-7111
- Enumerated
- Sep 17, 2008
- Record last updated
- Sep 17, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (909) 986-0941
- Entity
- Type 1 · individual
8 nearest addiction (substance use disorder) counselor records → All 27,741 in California → Look up another NPI →
Also registered at 317 W F St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pardis Amirhoushmand, PH.D.Psychologist1003946179
- Kristyne ArmentaStudent in an Organized Health Care Education/Training Program1902231616
- Javier Barrero, MA.MFTCounselor1215184221
- Judy Briggs, LCSWClinical Social Worker1205026200
- Michele Buyco, LMFT, PPSCMarriage & Family Therapist1003006164
- Yasmin Cardona-ByrneStudent in an Organized Health Care Education/Training Program1093117681
Verify Steve J. Corsaro in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Steve J. Corsaro among 27,741 addiction (substance use disorder) counselor records in California
Steve J. Corsaro is one of 27,741 addiction (substance use disorder) counselor records with a practice address in California. under 1% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2008, is newer than 12% of them.
- NPI issued2008 · 12% of these records are older, 84% newer
- In a Medicare fileNo · under 1% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2008 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YA0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
104 addiction (substance use disorder) counselor records list a practice address in Ontario
They are 104 of the 5,375 NPPES records with a practice address in Ontario, and 27,741 addiction (substance use disorder) counselor records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 27,741 in California → Every provider in Ontario → Addiction (Substance Use Disorder) Counselor nationwide →
The 8 addiction (substance use disorder) counselor records with the nearest ZIP codes
- Carlos ChavezOntario, CA 917621730398413
- Quan HancockOntario, CA 917621962655456
- Jason HerreraOntario, CA 917621073825469
- Luz Howard, LVNOntario, CA 917621821143330
- Diane JochimsenOntario, CA 917621578757225
- Arif KhwajaOntario, CA 917621003963489
- Kent KlawerOntario, CA 917621912203092
- Diana LuceroOntario, CA 917621659523751
Common questions
What is Steve J. Corsaro's NPI number?
Steve J. Corsaro's National Provider Identifier (NPI) is 1619126463, issued on Sep 17, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Steve J. Corsaro located?
The NPPES record lists a practice address at 317 W F St, Ontario, CA, 91762. Phone: (909) 986-7111. Providers update this record themselves, so call before visiting.
How can I verify Steve J. Corsaro's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.