NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Glen P. Merriwether, MA, LMHC, CDP

Addiction (Substance Use Disorder) Counselor in Bellevue, WA · enumerated 2008.

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

National Provider Identifier

1386815256

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Registry record

Entity type Individual (Type 1)
Name Mr. Glen P. Merriwether
Credential MA, LMHC, CDP
Sex Male
Practice address Bellevue, WA, 98005
Phone (425) 641-1999
Fax (425) 641-4069
Enumeration date Mar 18, 2008
Last updated in NPPES Mar 18, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License CP00003052 (WA) Primary
101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License LH00006263 (WA) Secondary

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

How do I verify Glen Merriwether's NPI record?
Cross-check NPI 1386815256 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1386815256 active?
Yes, as of the latest NPPES snapshot, NPI 1386815256 is active (record last updated 2008-03-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-18.