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Provider Profile

Matthew B. Duff

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At a glance

About Matthew Duff

Listed in the NPI registry as a psychologist, Matthew B. Duff practices in Issaquah, WA. NPI 1023912672 identifies this record in the national registry.

Factual summary compiled by Guide.md from public records; not written by this provider.

Specialty

Psychologist (Primary)

Credentials & Licensing

NPINational Provider Identifier
1023912672Issued 2026

As reported to the NPI registry ↗

Common questions

What is Matthew B. Duff's specialty?

Matthew B. Duff is a psychologist in Issaquah, WA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where can I find Matthew B. Duff?

Matthew B. Duff is listed at 195 Ne Gilman Blvd Ste 100, Issaquah, WA 98027. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How do I contact Matthew B. Duff?

The number on file is (425) 295-7697. Contact the office directly to confirm availability and scheduling.

NPI registry

What is Matthew B. Duff's NPI number?

Matthew B. Duff's National Provider Identifier is 1023912672. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Has Matthew B. Duff confirmed this information?

Not yet. This profile is built from public federal data and has not been confirmed by Matthew B. Duff. If this is you, claiming it is free.

Guide.md

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