NPPES file of Aug 9, 2026

Stuart Donald Slater

Peer Specialist · Fullerton, CA

Stuart Donald Slater is a peer specialist with a practice address in Fullerton, California, and NPI 1851856751, issued on Feb 5, 2019. Check the license (California MPSS-2OIVZD, 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
1851856751
Name
Stuart Donald Slater
Primary taxonomy
Peer Specialist 175T00000X
License number
MPSS-2OIVZD CA
Self-reported in NPPES; status is on the state search
Practice location
1501 E Orangethorpe Ave Ste 200, Fullerton, CA 92831
Phone
(714) 254-8473
Enumerated
Feb 5, 2019
Record last updated
Jan 16, 2026
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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8 nearest peer specialist records → All 4,528 in California → Look up another NPI →

Also registered at 1501 E Orangethorpe Ave Ste 200

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

  1. Misael AvilaStudent in an Organized Health Care Education/Training Program1831905157
  2. Delfina CastelanStudent in an Organized Health Care Education/Training Program1861328767
  3. Kimberly Cruz-BahenaMarriage & Family Therapist1295400216
  4. Vancleiber FrancoMarriage & Family Therapist1689328510
  5. Nicole JangStudent in an Organized Health Care Education/Training Program1154003028
  6. Michelle LanternierMarriage & Family Therapist1851149082

Verify Stuart Donald Slater 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 MPSS-2OIVZD    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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Stuart Donald Slater among 4,528 peer specialist records in California

Stuart Donald Slater is one of 4,528 peer specialist records with a practice address in California. 0% 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 2019, is newer than 19% of them.

  • NPI issued2019 · 19% of these records are older, 75% newer
  • In a Medicare fileNo · 0% of these records are
  • In the CMS Doctors and Clinicians fileNo · 0% of these records are
  • Record last updated2026 · 15% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 175T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Peer Specialist providers in California

There are 4,528 peer specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 4,528 in California → Every provider in Fullerton → Peer Specialist nationwide →

The 8 peer specialist records with the nearest ZIP codes

  1. Lisa IrwinFullerton, CA 928351033578299
  2. Maria MarinFullerton, CA 928351740531268
  3. Karen Aguilera MartinezGarden Grove, CA 928401427855014
  4. Michael AndrewsGarden Grove, CA 928401821746413
  5. Anthony BeaverGarden Grove, CA 928401982365821
  6. Sarah CoxGarden Grove, CA 928401114625803
  7. Aaron ElizarrarasGarden Grove, CA 928401144034620
  8. Daisy GarciaGarden Grove, CA 928401770256893

Common questions

What is Stuart Donald Slater's NPI number?

Stuart Donald Slater's National Provider Identifier (NPI) is 1851856751, issued on Feb 5, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Stuart Donald Slater located?

The NPPES record lists a practice address at 1501 E Orangethorpe Ave Ste 200, Fullerton, CA, 92831. Phone: (714) 254-8473. Providers update this record themselves, so call before visiting.

How can I verify Stuart Donald Slater's license?

NPPES lists California license number MPSS-2OIVZD, 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.