SOUND SLEEP HEALTH
NPI 1326127309
Clinic/Center - Sleep Disorder Diagnostic in Edmonds, WA
About Sound Sleep Health NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SOUND SLEEP HEALTH (NPI 1326127309) is a healthcare organization registered as a sleep disorder diagnostic in Edmonds, Washington and active in the NPI registry since November 2006. The organization lists Gandis G Mazeika, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
Other Identifiers 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sound Sleep Health is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
3Medicare enrollment records show 3 clinicians reassign Medicare billing to Sound Sleep Health, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (3)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 1326127309. It was assigned to this organization in the NPPES registry on November 2, 2006. The provider is doing business as Sound Sleep Health.
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.
Is Gandis G Mazeika MD Ps enrolled in Medicare?
Yes. Gandis G Mazeika MD Ps is registered in the Medicare PECOS enrollment system.
When is Gandis G Mazeika MD Ps's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Washington, Clinic/Group Practice) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Gandis G Mazeika MD Ps?
According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians reassign their Medicare billing to Gandis G Mazeika MD Ps, in Neurology and Sleep Medicine. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Gandis G Mazeika MD Ps accept?
Health plans from Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Gandis G Mazeika MD Ps as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
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 4 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.
# Sound Sleep Health · NPI 1326127309
Sleep Disorder Diagnostic organization in Edmonds, Washington. Organization record, active in the CMS NPPES registry since November 2, 2006.
## Identity
- **NPI:** 1326127309 (Entity type: Organization)
- **Enumerated:** November 2, 2006
- **Primary specialty:** Clinic/Center - Sleep Disorder Diagnostic · taxonomy 261QS1200X
- **Legal business name:** Gandis G Mazeika Md Ps
- **Organization subpart:** No
- **Authorized official:** Gandis Mazeika, PRESIDENT
## Practice location
- **Address:** 21701 76TH AVE W STE 206, Edmonds, WA 98026-7536
- **Phone:** (425) 636-2400 · **Fax:** (425) 636-2401
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (Non-DME Part B, Washington, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 3 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Neurology (2), Sleep Medicine (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 12, 2022
- **Other identifiers:** Medicaid 1110975 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1326127309) · Data from the CMS NPPES public registry.