John A. Chellsen, PH.D.
NPI 1669403580ActiveIndividual· Psychologist, Clinical· Stockton, CA
Psychologist, Clinical (PH.D.) in Stockton, California, licensed in CA, with an NPI issued in July 2006. Medicare paid $13,334 for services to 16 patients in 2024.
Overview
| NPI | 1669403580 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PH.D. |
| Sole proprietor | Yes |
| NPI issued | Jul 6, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychologist, Clinical Primary | 103TC0700X | PSY8979 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Psychologist Billing Independently (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 122 across 5 procedure codes |
| Paid by Medicare | $13,334 |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Clinical Psychologist |
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All 52 clinical psychologists in Stockton · All clinical psychologists in California