Aya Inamori Williams, PHD
Clinical Psychologist · San Mateo, CA
Aya Inamori Williams, PHD is a clinical psychologist with a practice address in San Mateo, California, and NPI 1568254829, issued on May 21, 2025. Check the license (California 35656, 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
- Aya Inamori Williams
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- 35656 CA
Self-reported in NPPES; status is on the state search - Practice location
- 100 S Ellsworth Ave Ste 802, San Mateo, CA 94401
- Phone
- (650) 822-1095
- Enumerated
- May 21, 2025
- Record last updated
- May 21, 2025
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 100 S Ellsworth Ave Ste 802
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Junichi ShimaokaClinical Psychologist1003267329
Verify Aya Inamori 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 35656Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Aya Inamori Williams among 12,647 clinical psychologist records in California
Aya Inamori Williams, PHD 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 2025, is newer than 98% of them.
- NPI issued2025 · 98% of these records are older, under 1% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2025 · 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).
65 clinical psychologist records list a practice address in San Mateo
They are 65 of the 3,909 NPPES records with a practice address in San Mateo, 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 San Mateo → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Sandra Beyerle, PHDSan Mateo, CA 944011649374687
- Jessamy Cadigan, PSYDSan Mateo, CA 944011720242548
- James Chessing, PHDSan Mateo, CA 944011326142407
- Stan FriedmanSan Mateo, CA 944011851597058
- Siew Kuek, PSY.DSan Mateo, CA 944011750533675
- Gerry Lenhart, PH.D.San Mateo, CA 944011184814865
- Diane Leroi, PH.D.San Mateo, CA 944011720109531
- Anna Nedelisky Zeman, PH.D.San Mateo, CA 944011265628820
Common questions
What is Aya Inamori Williams, PHD's NPI number?
Aya Inamori Williams, PHD's National Provider Identifier (NPI) is 1568254829, issued on May 21, 2025. An NPI identifies a provider in billing; it is not a license.
Where is Aya Inamori Williams, PHD located?
The NPPES record lists a practice address at 100 S Ellsworth Ave Ste 802, San Mateo, CA, 94401. Phone: (650) 822-1095. Providers update this record themselves, so call before visiting.
How can I verify Aya Inamori Williams, PHD's license?
NPPES lists California license number 35656, 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.