NPPES file of Aug 9, 2026

Linda Williams, PHD

Clinical Psychologist · San Diego, CA

Linda Williams, PHD is a clinical psychologist with a practice address in San Diego, California, and NPI 1336405117, issued on Apr 6, 2012. Check the license (California PSY24869, 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
1336405117
Name
Linda Williams
Credential
PHD
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
PSY24869 CA
Self-reported in NPPES; status is on the state search
Practice location
3525 Del Mar Heights RD # 1881, San Diego, CA 92130
Phone
(858) 381-3535
Enumerated
Apr 6, 2012
Record last updated
Dec 2, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20201109001815); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Linda Williams 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 PSY24869
    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
Find the California license search

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Linda Williams among 12,647 clinical psychologist records in California

Linda 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 2012, is newer than 63% of them.

  • NPI issued2012 · 63% of these records are older, 33% newer
  • In a Medicare fileNo · 9% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated2000 · median 2006 among the 2,424 with a school on file
  • Record last updated2020 · 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).

983 clinical psychologist records list a practice address in San Diego

They are 983 of the 52,937 NPPES records with a practice address in San Diego, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

The 8 clinical psychologist records with the nearest ZIP codes

  1. Christine Calix, PHD, LPSan Diego, CA 921301740226331
  2. Karen Hall, PH.D.San Diego, CA 921301508905456
  3. Erika Kao, PH.D.San Diego, CA 921301255369310
  4. Susan Lagasse, PH.D.San Diego, CA 921301164461836
  5. Katherine Macdonald, PH.D.San Diego, CA 921301245381623
  6. Leslie Miller, PH.D.San Diego, CA 921301780744433
  7. Michele Oster, PSY.D.San Diego, CA 921301295735280
  8. Tracy Ratermann, PH.D.San Diego, CA 921301740391572

Common questions

What is Linda Williams, PHD's NPI number?

Linda Williams, PHD's National Provider Identifier (NPI) is 1336405117, issued on Apr 6, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Linda Williams, PHD located?

The NPPES record lists a practice address at 3525 Del Mar Heights RD # 1881, San Diego, CA, 92130. Phone: (858) 381-3535. Providers update this record themselves, so call before visiting.

How can I verify Linda Williams, PHD's license?

NPPES lists California license number PSY24869, 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.