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Sound Sleep, LLC

Pulmonary Disease Physician in Bainbridge Island, WA · enumerated 2010 · authorized official William Boyan, Doctor.

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

National Provider Identifier

1538499082

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Registry record

Entity type Organization (Type 2)
Legal business name Sound Sleep, LLC
Practice address 7068 Wing Point Rd Ne, Bainbridge Island, WA, 98110
Phone (206) 604-6534
Enumeration date Jan 6, 2010
Last updated in NPPES Jan 6, 2010

Taxonomy & classification

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD00044635 (WA) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License MD00044635 (WA) Primary

Authorized official

Name William Boyan
Title Doctor
Phone (206) 604-6534

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.

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Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Sound Sleep, LLC?
Sound Sleep, LLC is registered in NPPES as a Pulmonary Disease Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-06.