Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Melvin Clyde Merrell, LDO/ABOM

Optician in Longview, WA · enumerated 2006.

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

National Provider Identifier

1578651048

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Registry record

Entity type Individual (Type 1)

Name Melvin Clyde Merrell

Credential LDO/ABOM

Sex Male

Practice address 1230 Seventh Ave., Longview, WA, 98632

Phone (360) 636-6238

Enumeration date Oct 10, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

156FX1800X Optician Eye and Vision Services Providers · License DO00000643 (WA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Melvin Merrell?

The National Provider Identifier (NPI) for Melvin Merrell is 1578651048, a Type 1 (individual) record in the CMS NPPES registry.

Where does Melvin Merrell practice?

The practice location on file with NPPES is in Longview, WA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.