NPPES file of Aug 9, 2026

John B. Greenhalgh, PHD

Clinical Neuropsychologist · Cloverdale, CA

John B. Greenhalgh, PHD is a clinical neuropsychologist with a practice address in Cloverdale, California, and NPI 1487707014, issued on Jan 18, 2007. Check the license (California PSY15677, 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.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1487707014
Name
John B. Greenhalgh
Credential
PHD
Primary taxonomy
Clinical Neuropsychologist 103G00000X
License number
PSY15677 CA
Self-reported in NPPES; status is on the state search
Practice location
241 N Cloverdale Blvd, Cloverdale, CA 95425
Phone
(707) 319-2607
Enumerated
Jan 18, 2007
Record last updated
Jan 4, 2010 (not updated in 16 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify John B. Greenhalgh in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license PSY15677    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
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Clinical Neuropsychologist providers in California

There are 743 clinical neuropsychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 743 in California → Every provider in Cloverdale →

Other clinical neuropsychologist records in California

  1. Richard Abbey, PH.D.Palo Alto, CA1730377649
  2. Jennifer Acogny, PSY.D.Beverly Hills, CA1841707643
  3. Jennifer Adler, PHDSan Diego, CA1164314753
  4. Kristina Agbayani, PH.D.Palo Alto, CA1174974125
  5. Maral AghvinianLos Angeles, CA1588545685
  6. Cynthia Aguilar, PSY.DLos Angeles, CA1114474699
  7. Charles AhernCarmel, CA1083336200
  8. Natacha Akshoomoff, PH.D.San Diego, CA1740315043
  9. Lori Alasantro, PHDCarlsbad, CA1669807111
  10. Kimberly Alfano, PHDSanta Barbara, CA1326068115

Common questions

What is John B. Greenhalgh, PHD's NPI number?

John B. Greenhalgh, PHD's National Provider Identifier (NPI) is 1487707014, issued on Jan 18, 2007. An NPI identifies a provider in billing; it is not a license.

Where is John B. Greenhalgh, PHD located?

The NPPES record lists a practice address at 241 N Cloverdale Blvd, Cloverdale, CA, 95425. Phone: (707) 319-2607. Providers update this record themselves, so call before visiting.

How can I verify John B. Greenhalgh, PHD's license?

NPPES lists California license number PSY15677, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.