James William Hamill
Psychologist · Fullerton, CA
James William Hamill is a psychologist with a practice address in Fullerton, California, and NPI 1700345212, issued on Mar 14, 2019. Check the license (California 35658, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- James William Hamill
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 35658 CA
Self-reported in NPPES; status is on the state search - Practice location
- 236 Soco Dr, Fullerton, CA 92832
- Phone
- (949) 414-6182
- Enumerated
- Mar 14, 2019
- Record last updated
- Nov 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20250313001808); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Verify James William Hamill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 35658Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Healing Rhythms Psychological Services PCMonrovia, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James William Hamill among 7,304 psychologist records in California
James William Hamill is one of 7,304 psychologist records with a practice address in California. 6% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 77% of them.
- NPI issued2019 · 77% of these records are older, 20% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated2023 · median 2005 among the 1,058 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in California
There are 7,304 psychologist records in California.
All 7,304 in California → Every provider in Fullerton → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Mercedes Galante, PH.D.Fullerton, CA 928321619903903
- Shannon Hanrahan, PSY AND MFTFullerton, CA 928321841405586
- Robert Whitcomb, PSY.D.Fullerton, CA 928321124204920
- Madison AltneuFullerton, CA 928311619457090
- Gabriel BeventeFullerton, CA 928311982339446
- Ana BuntaFullerton, CA 928311003703265
- Kelsey ConroyFullerton, CA 928311295541423
- Megan JohnsonFullerton, CA 928311891550778
Common questions
What is James William Hamill's NPI number?
James William Hamill's National Provider Identifier (NPI) is 1700345212, issued on Mar 14, 2019. An NPI identifies a provider in billing; it is not a license.
Where is James William Hamill located?
The NPPES record lists a practice address at 236 Soco Dr, Fullerton, CA, 92832. Phone: (949) 414-6182. Providers update this record themselves, so call before visiting.
How can I verify James William Hamill's license?
NPPES lists California license number 35658, 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.
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.