Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mark A Harswick

Counselor in Rock Springs, WY · enumerated 2010.

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

National Provider Identifier

1376866491

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mark A Harswick

Sex Male

Practice address 2300 Foothill Blvd, Rock Springs, WY, 82901

Phone (307) 352-6677

Enumeration date Mar 3, 2010

Last updated in NPPES Mar 3, 2010

Taxonomy & licenses

101Y00000X Counselor Behavioral Health & Social Service Providers · License PPC-512 (WY) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License PPC-512 (WY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Harswick?

Mark Harswick is registered in NPPES with the primary taxonomy of Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-03.