Ronald Haimowitz, PH.D.
Clinical Psychologist · Napa, CA
Ronald Haimowitz, PH.D. is a clinical psychologist with a practice address in Napa, California, and NPI 1306975313, issued on Mar 5, 2007. Check the license (California PSY7930, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Ronald Haimowitz
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY7930 CA
Self-reported in NPPES; status is on the state search - Practice location
- 531 Jefferson St, Napa, CA 94559
- Phone
- (707) 255-8540
- Enumerated
- Mar 5, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (707) 251-8540
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 531 Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mary Carson, LCSWClinical Social Worker1376603795
Verify Ronald Haimowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY7930Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Ronald Haimowitz among 12,647 clinical psychologist records in California
Ronald Haimowitz, PH.D. is one of 12,647 clinical psychologist records with a practice address in California. 9% 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 2007, is newer than 20% of them.
- NPI issued2007 · 20% of these records are older, 57% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
108 clinical psychologist records list a practice address in Napa
They are 108 of the 3,583 NPPES records with a practice address in Napa, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 12,647 in California → Every provider in Napa → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Linda Bancke, PH.D.Napa, CA 945591851472880
- Michael Behles, PH.D.Napa, CA 945591265451132
- John Brandes, PH.D.Napa, CA 945591487688644
- Richard Cohan, PH.D.Napa, CA 945591407911779
- James Geisler, PH.D.Napa, CA 945591679666390
- Jo Gilbert, PH.D.Napa, CA 945591033167853
- Barrie Glen, PH.D.Napa, CA 945591336233709
- Anne Hoff, PHDNapa, CA 945591306898101
Common questions
What is Ronald Haimowitz, PH.D.'s NPI number?
Ronald Haimowitz, PH.D.'s National Provider Identifier (NPI) is 1306975313, issued on Mar 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ronald Haimowitz, PH.D. located?
The NPPES record lists a practice address at 531 Jefferson St, Napa, CA, 94559. Phone: (707) 255-8540. Providers update this record themselves, so call before visiting.
How can I verify Ronald Haimowitz, PH.D.'s license?
NPPES lists California license number PSY7930, 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. 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.