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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

WILLIAM A FORSYTH
NPI 1861300543
Psychiatry & Neurology - Psychiatry in Hayden, ID

Active since September 01, 2026
2455 E WOODSTONE DR, HAYDEN, ID 83835(208) 271-5947(208) 382-8457 Get Directions Write a Review

NPPES record added: September 1, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

About William A Forsyth NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM A FORSYTH (NPI 1861300543), doing business as Northwoods Psychiatry Llc, is a healthcare organization registered as a psychiatry in Hayden, Idaho and active in the NPI registry since September 2026. The organization lists William Forsyth, Owner, as its authorized official.

NPPES Registry Identity

NPI1861300543
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameWILLIAM A FORSYTH
Location Address2455 E WOODSTONE DRHayden, ID 83835-8114
Mailing Address2455 E Woodstone DrHayden, ID 83835-8114 · (208) 271-5947 · Fax (208) 382-8457
Phone(208) 271-5947
Fax(208) 382-8457
Organization SubpartNo
Authorized OfficialWilliam ForsythOwner · (208) 271-5947
Enumeration DateSeptember 1, 2026
NPPES CertifiedSeptember 1, 2026
✔ NPI 1861300543 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
2455 E WOODSTONE DR, Hayden, ID 83835
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Other Names 1

Doing Business AsNorthwoods Psychiatry Llc

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William A Forsyth's NPI number?

The NPI number for William A Forsyth is 1861300543. It was assigned to this organization in the NPPES registry on September 1, 2026. The provider is doing business as Northwoods Psychiatry LLC.

Where is William A Forsyth located?

William A Forsyth is located at 2455 E Woodstone Dr, Hayden, ID 83835. The listed phone number is (208) 271-5947.

What is William A Forsyth's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

When was this NPI record last updated?

The NPPES record for William A Forsyth was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.