Individual provider · Type 1 NPI

Matthew Bruce Duff

Psychologist · Issaquah, WA

NPI number 1023912672 Active

Practice location

195 NE Gilman Blvd Ste 100
Issaquah, WA 98027-2940

Call (425) 295-7697 Map

Mailing address

10908 57th Avenue Ct E
Puyallup, WA 98373-5716

Specialties and licenses

TaxonomyCodeLicense
Psychologist Primary 103T00000XNone listed

Psychologist: A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustmen…

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About NPI 1023912672

Matthew Bruce Duff's National Provider Identifier is 1023912672, issued on Oct 6, 2026. The primary taxonomy on file is Psychologist (103T00000X), and the practice location is in Issaquah, WA. The record was last updated on Oct 6, 2026.