John D Adler, PHD
John D Adler is a Psychologist provider (Psychologist) practicing in Gresham, OR, registered in the NPPES registry with NPI 1588645055 since 2005. The credential PHD stands for Doctor of Philosophy. Practices at Donald A Burress MD PC (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1588645055 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John D Adler |
| Credential | PHD |
| Sex | Male |
| Practice address | Gresham, OR, 97030 |
| Phone | 5032514088 |
| Enumeration date | 2005-11-10 |
| Last updated in NPPES | 2017-12-07 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103T00000X | Psychologist | Primary | 0615 | OR |
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: John Adler, PHD NPI: 1588645055 Taxonomy: 103T00000X (Psychologist) Address: Gresham, OR, 97030
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1770713836 | Donald A Burress MD PC | Organization | Medical Specialty Clinic/Center | Gresham, OR |
Verify this record
Cross-check NPI 1588645055 against the authoritative CMS record: view John D Adler 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 2017-12-07.