John Craig Williams, PSY.D.
Clinical Psychologist · Livermore, CA
John Craig Williams, PSY.D. is a clinical psychologist with a practice address in Livermore, California, and NPI 1265600662, issued on Feb 19, 2008. Check the license (California PSY20258, 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
- John Craig Williams
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY20258 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1080 Concannon Blvd, Livermore, CA 94550
- Phone
- (925) 918-2469
- Enumerated
- Feb 19, 2008
- Record last updated
- Feb 19, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 1080 Concannon Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Craig Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY20258Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Craig Williams among 12,647 clinical psychologist records in California
John Craig Williams, PSY.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 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 51% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2008 · 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).
14 clinical psychologist records list a practice address in Livermore
They are 14 of the 994 NPPES records with a practice address in Livermore, 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 Livermore → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Deepali Dhruve, PHDLivermore, CA 945501023974763
- Leeanne Harker, PH.D.Livermore, CA 945501821326216
- Geoffrey Lane, PH.D.Livermore, CA 945501841228533
- Jeannette Lobao, PSY.DLivermore, CA 945501285644492
- Alice Mayall, PHDLivermore, CA 945501477565646
- Krystal Nekudova, PSYDLivermore, CA 945501366697443
- Nancy Oehrle, PSY.D.Livermore, CA 945501790711901
- Sallie Olsen, PH.DLivermore, CA 945501881621845
Common questions
What is John Craig Williams, PSY.D.'s NPI number?
John Craig Williams, PSY.D.'s National Provider Identifier (NPI) is 1265600662, issued on Feb 19, 2008. An NPI identifies a provider in billing; it is not a license.
Where is John Craig Williams, PSY.D. located?
The NPPES record lists a practice address at 1080 Concannon Blvd, Livermore, CA, 94550. Phone: (925) 918-2469. Providers update this record themselves, so call before visiting.
How can I verify John Craig Williams, PSY.D.'s license?
NPPES lists California license number PSY20258, 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.