WILLIAM MAIER
NPI 1346479052
Counselor in Seattle, WA

Q: What is William Maier's NPI number?

The NPI number for William Maier is 1346479052. It was assigned to this individual provider in the NPPES registry on July 2, 2009.

Q: What is William Maier's specialty?

The primary specialty registered for this NPI is Counselor with taxonomy code 101Y00000X.

Q: Is William Maier enrolled in Medicare?

No. William Maier has opted out of Medicare through February 23, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

Q: When was this NPI record last updated?

The NPPES record for William Maier was last updated on February 23, 2023. NPI Profile syncs with the weekly NPPES data releases published by CMS.

Active since July 02, 2009Opted out of Medicare · through Feb 23, 2027

1200 5TH AVE STE 800, SEATTLE, WA 98101(206) 374-0109 Get Directions Write a Review

NPPES record last updated: February 23, 2023. Verified against the NPPES registry weekly; last sync: July 26, 2026.

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About William Maier NPPES

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

WILLIAM MAIER (NPI 1346479052) is an individual counselor in Seattle, Washington, licensed in Washington (RC6010404) and active in the NPI registry since July 2009. He has opted out of Medicare through February 23, 2027.

NPPES Registry Identity

NPI1346479052

Entity TypeIndividualMale

Primary Taxonomy101Y00000X

Provider Legal NameWILLIAM MAIER

Location Address1200 5TH AVE STE 800Seattle, WA 98101-3136

Mailing Address1200 5th Ave Ste 800Seattle, WA 98101-3136 · (206) 374-0109

Phone(206) 374-0109

Sole ProprietorNo

Enumeration DateJuly 2, 2009

Last NPPES UpdateFebruary 23, 2023

NPPES CertifiedJanuary 13, 2023

✔ NPI 1346479052 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyCounselorBehavioral Health & Social Service Providers

Taxonomy Code101Y00000X

License✔ Licensed in WA · RC6010404

Definition

A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X

1200 5TH AVE STE 800, Seattle, WA 98101

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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

ⓘ

Opted out of Medicare

William Maier has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from February 23, 2023 through February 23, 2027.

Opt-Out Effective DateFebruary 23, 2023

Opt-Out In Effect ThroughFebruary 23, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 20

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

DR. ASHLEIGH MARIE HARVEY PHD

Student in an Organized Health Care Education/Training Program