Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Duncan James Calver, PSYD

Psychologist in Longview, WA · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1407322381

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Registry record

Entity type Individual (Type 1)

Name Duncan James Calver

Credential PSYD

Sex Male

Practice address Longview, WA, 98632

Phone (360) 414-8600

Fax (360) 636-7372

Enumeration date Oct 18, 2018

Last updated in NPPES Apr 4, 2022

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License MC60701724 (WA) Secondary

103T00000X Psychologist Behavioral Health & Social Service Providers · License PY61189478 (WA) Primary

PSYD · Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential

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 → Validate an NPI →

Frequently asked questions

Where does Duncan Calver practice?

The practice location on file with NPPES is in Longview, WA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Duncan Calver?

The National Provider Identifier (NPI) for Duncan Calver is 1407322381, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Tina Taylor Psychiatric/Mental Health Nurse Practitioner · Longview, WA NPI 1306832274 Aniezka Jenissen Mental Health Counselor · Longview, WA NPI 1144392325 Tristan Wozniak Mental Health Counselor · Longview, WA NPI 1023257094 Geoffrey Richie Counselor · Longview, WA NPI 1417293473 Northwest Psychological Resources Clinical Psychologist · Longview, WA NPI 1780081331 Jana Schmutz Mental Health Counselor · Longview, WA NPI 1114306867 Mark Meadows Mental Health Counselor · Longview, WA NPI 1831865716 Timber and Tide Counseling Mental Health Counselor · Longview, WA NPI 1982549937

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-04.