NPPES file of Aug 9, 2026

Jessica J. Williams, PSY.D.

Clinical Psychologist · Sacramento, CA

Jessica J. Williams, PSY.D. is a clinical psychologist with a practice address in Sacramento, California, and NPI 1144555343, issued on Oct 6, 2009. Check the license (California 23031, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1144555343
Name
Jessica J. Williams
Credential
PSY.D.
Primary taxonomy
Clinical Psychologist 103TC0700X
License number
23031 CA
Self-reported in NPPES; status is on the state search
Practice location
2008 Morse Ave, Sacramento, CA 95825
Phone
(916) 973-7488
Enumerated
Oct 6, 2009
Record last updated
Feb 11, 2022
Medicare enrollment
Enrolled (PECOS I20121004000690); accepts Medicare assignment
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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8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →

Also registered at 2008 Morse Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Anthony Barnes, MSW, LCSW.Clinical Social Worker1427697374
  2. Johanna Barron, PSY.DClinical Psychologist1689865529
  3. Diana BerruecosClinical Social Worker1235324070
  4. Gretchen Blake, LCSWClinical Social Worker1861543704
  5. Thomas Boone, LCSWClinical Social Worker1215091806
  6. Deborah Boyd, MFTMarriage & Family Therapist1568528552

Verify Jessica J. 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 23031    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Permanente Medical Group IncRoseville, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Jessica J. Williams among 12,647 clinical psychologist records in California

Jessica J. 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. Its NPI, issued in 2009, is newer than 49% of them.

  • NPI issued2009 · 49% of these records are older, 46% newer
  • In a Medicare fileYes · 9% of these records are
  • In the CMS Doctors and Clinicians fileYes · 19% of these records are
  • Graduated2008 · median 2006 among the 2,424 with a school on file
  • Record last updated2022 · 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).

Clinical Psychologist providers in California

There are 12,647 clinical psychologist records in California.

All 12,647 in California → Every provider in Sacramento → Clinical Psychologist nationwide →

The 8 clinical psychologist records with the nearest ZIP codes

  1. Candace Adams, P.H.D. (M.D)Sacramento, CA 958251649365115
  2. Jacky Aron, PHDSacramento, CA 958251679632020
  3. Wanda Baxter, PSYDSacramento, CA 958251225152119
  4. Lynne Calonico, PH.D.Sacramento, CA 958251871659631
  5. Laurence Coff, PH.D.Sacramento, CA 958251144389081
  6. Cory Fitzpatrick, PH.D.Sacramento, CA 958251336206648
  7. Irving HellmanSacramento, CA 958251033260260
  8. Mary Huarte, PSY. D.Sacramento, CA 958251306970371

Common questions

What is Jessica J. Williams, PSY.D.'s NPI number?

Jessica J. Williams, PSY.D.'s National Provider Identifier (NPI) is 1144555343, issued on Oct 6, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Jessica J. Williams, PSY.D. located?

The NPPES record lists a practice address at 2008 Morse Ave, Sacramento, CA, 95825. Phone: (916) 973-7488. Providers update this record themselves, so call before visiting.

How can I verify Jessica J. Williams, PSY.D.'s license?

NPPES lists California license number 23031, 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. Medicare files from data.cms.gov. 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.