Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

James Mast Counseling, LLC

Q: What is the NPI number for James Mast Counseling, LLC?

The NPI for James Mast Counseling, LLC is 1659982684, a Type 2 (organization) record in the CMS NPPES registry.

Professional Counselor in Harleysville, PA · enumerated 2020 · authorized official James Mast, Lcsw/Counselor.

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

National Provider Identifier

1659982684

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)

Legal business name James Mast Counseling, LLC

Practice address 201 Ruth Rd, Harleysville, PA, 19438

Phone (267) 317-5602

Enumeration date Aug 13, 2020

Last updated in NPPES Aug 13, 2020

Taxonomy & classification

101YP2500X Professional Counselor Behavioral Health & Social Service Providers Primary

Authorized official

Name James Mast

Title Lcsw/Counselor

Phone (267) 317-5602

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 James Mast Counseling, LLC?

The NPI for James Mast Counseling, LLC is 1659982684, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for James Mast Counseling, LLC?

NPPES lists James Mast (Lcsw/Counselor) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-13.