Dr. Thomas Charles Duke, PH.D.
Dr. Thomas Charles Duke is a Psychologist provider (Psychologist) practicing in Pasadena, CA, registered in the NPPES registry with NPI 1679705388 since 2009. The credential PHD stands for Doctor of Philosophy. Practices at Equip Psychological Corporation (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1679705388 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Thomas Charles Duke |
| Credential | PH.D. |
| Sex | Male |
| Practice address | 299 N EUCLID AVE STE 500, Pasadena, CA, 91101 |
| Phone | 6263446732 |
| Enumeration date | 2009-08-13 |
| Last updated in NPPES | 2026-02-13 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | 28069 | CA |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: Thomas Duke, PH.D. NPI: 1679705388 Taxonomy: 103T00000X (Psychologist) Address: 299 N EUCLID AVE STE 500, Pasadena, CA, 91101
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1881739175 | David Lorentzen | Individual | Clinical Psychologist | Pasadena, CA |
| 1891370896 | Equip Psychological Corporation | Organization | Mental Health Counselor | Pasadena, CA |
| 1184358533 | Matthew Hoard | Individual | Student in an Organized Health Care Education/Training Program | Pasadena, CA |
| 1194503490 | Jonathan Doctorian | Individual | Clinical Psychologist | Pasadena, CA |
Verify this record
Cross-check NPI 1679705388 against the authoritative CMS record: view Dr. Thomas Charles Duke on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2026-02-13.