Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Gary Michael Sampson, PHD
Psychologist in Longview, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1225149032
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Registry record
Entity type Individual (Type 1)
Name Dr. Gary Michael Sampson
Credential PHD
Sex Male
Practice address 945 11th Avenue, Longview, WA, 98632
Phone (888) 313-8600
Fax (360) 636-7372
Enumeration date Aug 31, 2006
Last updated in NPPES Nov 17, 2011
Taxonomy & licenses
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers.
About the PHD 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.
Frequently asked questions
What specialty is Gary Sampson?
Gary Sampson is registered in NPPES with the primary taxonomy of Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-17.