John Donald Sawyer, PHD
Clinical Psychologist · Fullerton, CA
John Donald Sawyer, PHD is a clinical psychologist with a practice address in Fullerton, California, and NPI 1194822742, issued on Sep 17, 2006. Check the license (California PSY11021, 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 Donald Sawyer
- Credential
- PHD
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY11021 CA
Self-reported in NPPES; status is on the state search - Practice location
- 680 Langsdorf Dr, Fullerton, CA 92831
- Phone
- (714) 871-9732
- Enumerated
- Sep 17, 2006
- Record last updated
- Oct 21, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (714) 871-4561
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 12,647 in California → Look up another NPI →
Also registered at 680 Langsdorf Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Donald Sawyer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY11021Check 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 Donald Sawyer among 12,647 clinical psychologist records in California
John Donald Sawyer, 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 80% newer
- In a Medicare fileNo · 9% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2011 · 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).
55 clinical psychologist records list a practice address in Fullerton
They are 55 of the 5,437 NPPES records with a practice address in Fullerton, 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 Fullerton → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Daphne Artis, PSYDFullerton, CA 928311114080157
- Ronald Carlson, PSY DFullerton, CA 928311841206075
- Richard Fry, PH.D.Fullerton, CA 928311124113550
- Kimberly Hagan, PHDFullerton, CA 928311861584922
- Betty Hammond, PH.DFullerton, CA 928311134205792
- Jose Jorge, PH.D.Fullerton, CA 928311477656700
- Robert Kraszewski, PHDFullerton, CA 928311750447850
- Alison Nathan, PHDFullerton, CA 928311659478204
Common questions
What is John Donald Sawyer, PHD's NPI number?
John Donald Sawyer, PHD's National Provider Identifier (NPI) is 1194822742, issued on Sep 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Donald Sawyer, PHD located?
The NPPES record lists a practice address at 680 Langsdorf Dr, Fullerton, CA, 92831. Phone: (714) 871-9732. Providers update this record themselves, so call before visiting.
How can I verify John Donald Sawyer, PHD's license?
NPPES lists California license number PSY11021, 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.