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

Mr. Robert J. Piersall, M.S.W.

Clinical Social Worker in Kalispell, MT · enumerated 2007 · practices at Wellspring Therapeutic Services.

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

National Provider Identifier

1134333610

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Registry record

Entity type Individual (Type 1)

Name Mr. Robert J. Piersall

Credential M.S.W.

Sex Male

Practice address Kalispell, MT, 59901

Phone (406) 755-3134

Enumeration date May 10, 2007

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 199 (MT) Primary

Other identifiers

Identifier	Type	State	Issuer
0000501878	Medicaid	MT	-
07006-1	Other	MT	BCBS OF MONTANA

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 Robert Piersall's NPI record?

Cross-check NPI 1134333610 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1134333610 active?

Yes, as of the latest NPPES snapshot, NPI 1134333610 is active (record last updated 2007-07-08).

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