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SLEEP MEDICINE NORTHWEST
NPI 1639117393
Clinic/Center - Sleep Disorder Diagnostic in Edmonds, WA

Active since June 03, 2006
21701 76TH AVE W STE 206, EDMONDS, WA 98026(425) 636-2400(425) 636-2401 Get Directions Write a Review

NPPES record last updated: October 12, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Oct 12, 2022, Feb 24, 2021, Aug 22, 2020 (3 updates tracked since 2020).

About Sleep Medicine Northwest NPPES

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

SLEEP MEDICINE NORTHWEST (NPI 1639117393) is a healthcare organization registered as a sleep disorder diagnostic in Edmonds, Washington and active in the NPI registry since June 2006. The organization lists Gandis G Mazeika, President, as its authorized official.

NPPES Registry Identity

NPI1639117393
Entity TypeOrganization
Primary Taxonomy261QS1200X
Legal Business NameGANDIS G MAZEIKA MD PS
Location Address21701 76TH AVE W STE 206Edmonds, WA 98026-7536
Mailing Address16150 Ne 85th St Ste 203Redmond, WA 98052-3543 · (425) 636-2400 · Fax (425) 636-2401
Phone(425) 636-2400
Fax(425) 636-2401
Organization SubpartNo
Authorized OfficialGandis G MazeikaPresident · (425) 636-2400
Enumeration DateJune 3, 2006
Last NPPES UpdateOctober 12, 20223 updates tracked since enumeration
NPPES CertifiedOctober 12, 2022
✔ NPI 1639117393 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinic/Center · Sleep Disorder DiagnosticAmbulatory Health Care Facilities
Taxonomy Code261QS1200X
Licenses✔ Licensed in WA · MD00044962✔ Licensed in WA · MD000386959✔ Licensed in WA · RN00103961
21701 76TH AVE W STE 206, Edmonds, WA 98026
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Other Names 1

Doing Business AsSleep Medicine Northwest

Other Identifiers 2

Medicaid1110972WA
OtherMD00038659WA · License Number

Other Providers at the Same Location NPPES 3

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

GANDIS G MAZEIKA MD PS
Clinic/Center (Sleep Disorder Diagnostic)
21701 76TH AVE W STE 206
EDMONDS, WA 98026
Snohomish County (425) 636-2400
GANDIS G MAZEIKA MD PS
Clinic/Center (Sleep Disorder Diagnostic)
21701 76TH AVE W STE 206
EDMONDS, WA 98026
Snohomish County (206) 427-4242
GANDIS G. MAZEIKA M.D.
Psychiatry & Neurology (Sleep Medicine)
21701 76TH AVE W STE 206
EDMONDS, WA 98026
Snohomish County (425) 636-2400

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 Gandis G Mazeika MD Ps's NPI number?

The NPI number for Gandis G Mazeika MD Ps is 1639117393. It was assigned to this organization in the NPPES registry on June 3, 2006. The provider is doing business as Sleep Medicine Northwest.

Where is Gandis G Mazeika MD Ps located?

Gandis G Mazeika MD Ps is located at 21701 76th Ave W Ste 206, Edmonds, WA 98026. The listed phone number is (425) 636-2400.

What is Gandis G Mazeika MD Ps's specialty?

The primary specialty registered for this NPI is Clinic/Center, specializing in Sleep Disorder Diagnostic, with taxonomy code 261QS1200X.

When was this NPI record last updated?

The NPPES record for Gandis G Mazeika MD Ps was last updated on October 12, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.