Diane Harnish, PH.D.
Psychologist · Sebastopol, CA
Diane Harnish, PH.D. is a psychologist with a practice address in Sebastopol, California, and NPI 1962791640, issued on Apr 1, 2011. Check the license (California PSY 24138, 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
- Diane Harnish
- Credential
- PH.D.
- Primary taxonomy
- Psychologist 103T00000X
- License numbers
- PSY 24138 CA
PSY24138 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6741 Redwood Ave, Sebastopol, CA 95472
- Phone
- (415) 924-4252
- Enumerated
- Apr 1, 2011
- Record last updated
- Dec 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20110722000265); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Verify Diane Harnish in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY 24138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Diane Harnish among 7,304 psychologist records in California
Diane Harnish, PH.D. 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 not. Its NPI, issued in 2011, is newer than 50% of them.
- NPI issued2011 · 50% of these records are older, 47% newer
- In a Medicare fileNo · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated2008 · median 2005 among the 1,058 with a school on file
- Record last updated2024 · 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).
14 psychologist records list a practice address in Sebastopol
They are 14 of the 550 NPPES records with a practice address in Sebastopol, and 7,304 psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,304 in California → Every provider in Sebastopol → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Cynthia Acks-StewartSebastopol, CA 954721205966728
- Theresa BradburySebastopol, CA 954721376204602
- Marylou Donnelly, MASebastopol, CA 954721326130576
- Andrea Kirk, PH. DSebastopol, CA 954721760939318
- Gillian Lerner, PSYDSebastopol, CA 954721740856608
- Cammy Michel, PSY 24688Sebastopol, CA 954721093087637
- David Murphy, PHDSebastopol, CA 954721376628255
- Jill ReesSebastopol, CA 954721306962659
Common questions
What is Diane Harnish, PH.D.'s NPI number?
Diane Harnish, PH.D.'s National Provider Identifier (NPI) is 1962791640, issued on Apr 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Diane Harnish, PH.D. located?
The NPPES record lists a practice address at 6741 Redwood Ave, Sebastopol, CA, 95472. Phone: (415) 924-4252. Providers update this record themselves, so call before visiting.
How can I verify Diane Harnish, PH.D.'s license?
NPPES lists California license number PSY 24138, 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.