Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William C Mosier, LPC

Mental Health Counselor in Steubenville, OH · enumerated 2021.

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

National Provider Identifier

1982376786

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name William C Mosier

Credential LPC

Sex Male

Practice address 1524 Sunset Blvd Ste A, Steubenville, OH, 43952

Phone (740) 264-7751

Fax (740) 264-2422

Enumeration date Sep 30, 2021

Last updated in NPPES Sep 5, 2025

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License C.2204611 (OH) Secondary

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License E.2505702 (OH) Primary

101Y00000X Counselor Behavioral Health & Social Service Providers · License C.2103537-TRNE (OH) Secondary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC credential

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 William Mosier?

The National Provider Identifier (NPI) for William Mosier is 1982376786, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Mosier practice?

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

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-05.