Gregory L. Williams, Psy.D., PC
Gregory L. Williams, Psy.D., PC is a healthcare organization registered as Clinical Psychologist in Olympia, WA, holding Type 2 (organization) NPI 1730369877 since 2007. The authorized official on file is Gregory Williams, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1730369877 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Gregory L. Williams, Psy.D., PC |
| Practice address | 1800 COOPER POINT RD SW STE 17, Olympia, WA, 98502 |
| Phone | 3607544662 |
| Fax | 3603523289 |
| Enumeration date | 2007-11-06 |
| Last updated in NPPES | 2008-03-13 |
Authorized official
| Name | Gregory Williams |
|---|---|
| Title | President |
| Phone | 3607544662 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PSY2410 | WA |
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 7119985 | Medicaid | WA | — |
Copy-ready billing details
Provider: Gregory L. Williams, Psy.D., PC NPI: 1730369877 Taxonomy: 103TC0700X (Clinical Psychologist) Address: 1800 COOPER POINT RD SW STE 17, Olympia, WA, 98502
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1487739603 | Jeffrey Petra | Individual | Clinical Child & Adolescent Psychologist | Olympia, WA |
| 1932238268 | Cheryl Deviny | Individual | Mental Health Counselor | Olympia, WA |
| 1568589406 | Kelley Jones | Individual | Mental Health Counselor | Olympia, WA |
| 1811164270 | Scott Coleman | Individual | Mental Health Counselor | Olympia, WA |
| 1205230794 | John Shattuck | Individual | Mental Health Counselor | Olympia, WA |
| 1639067580 | Belief Center for Family Therapy | Organization | Mental Health Clinic/Center (Including Community Mental Health Center) | Olympia, WA |
Verify this record
Cross-check NPI 1730369877 against the authoritative CMS record: view Gregory L. Williams, Psy.D., PC 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
What type of organization is Gregory L. Williams, Psy.D., PC?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2008-03-13.