Ronald Earl Offenstein, PHD
Psychologist · Riverside, CA
Ronald Earl Offenstein, PHD is a psychologist with a practice address in Riverside, California, and NPI 1811091978, issued on Sep 11, 2006. Check the license (California PSY6287, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ronald Earl Offenstein
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY6287 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5887 Brockton Ave, Riverside, CA 92506
- Phone
- (951) 275-8500
- Enumerated
- Sep 11, 2006
- Record last updated
- Aug 30, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (951) 275-8560
- Medicare enrollment
- Enrolled (PECOS I20121031000332); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Also registered at 5887 Brockton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ariel Gonzalez, NURSE PRACTITIONERPsychiatric/Mental Health Nurse Practitioner1528941424
Verify Ronald Earl Offenstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY6287Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Riverside Psychiatric Medical GroupRiverside, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ronald Earl Offenstein among 7,304 psychologist records in California
Ronald Earl Offenstein, PHD is one of 7,304 psychologist records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 82% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated1973 · median 2005 among the 1,058 with a school on file
- Record last updated2012 · 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 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in California
There are 7,304 psychologist records in California.
All 7,304 in California → Every provider in Riverside → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Alan AcreRiverside, CA 925061013612811
- Alkenia BlackmonRiverside, CA 925061932874245
- George Dabdoub, PSY.D.Riverside, CA 925061730739079
- Diana FulmerRiverside, CA 925061922191592
- Elizabeth Fuss, PSYDRiverside, CA 925061649880410
- Emma Girard, PSY.D.Riverside, CA 925061386883106
- Jodi Hochstadter, M.ED., LMFT, PSY.DRiverside, CA 925061932237047
- Kathryn Mantz, PHDRiverside, CA 925061164526232
Common questions
What is Ronald Earl Offenstein, PHD's NPI number?
Ronald Earl Offenstein, PHD's National Provider Identifier (NPI) is 1811091978, issued on Sep 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Earl Offenstein, PHD located?
The NPPES record lists a practice address at 5887 Brockton Ave, Riverside, CA, 92506. Phone: (951) 275-8500. Providers update this record themselves, so call before visiting.
How can I verify Ronald Earl Offenstein, PHD's license?
NPPES lists California license number PSY6287, as entered by the provider. 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. Medicare files from data.cms.gov. 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.