Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Michael Sullivan, Msw, Inc.

Q: What type of organization is Michael Sullivan, Msw, Inc.?

Michael Sullivan, Msw, Inc. is registered in NPPES as a Clinical Social Worker (its primary provider taxonomy).

Clinical Social Worker in Billings, MT · enumerated 2007 · authorized official Diane Sullivan, Business Manager.

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

National Provider Identifier

1063567493

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Registry record

Entity type Organization (Type 2)

Legal business name Michael Sullivan, Msw, Inc.

Practice address 304 Grand Ave, Billings, MT, 59101

Phone (406) 245-4566

Fax (406) 245-2441

Enumeration date Jan 24, 2007

Last updated in NPPES Sep 6, 2018

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 192 (MT) Primary

Authorized official

Name Diane Sullivan

Title Business Manager

Phone (406) 861-6389

Other identifiers

Identifier	Type	State	Issuer
7082-0	Other	MT	BCBS
A796094	Other	MT	VALUE OPTIONS
0501046	Medicaid	MT	-

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 type of organization is Michael Sullivan, Msw, Inc.?

Michael Sullivan, Msw, Inc. is registered in NPPES as a Clinical Social Worker (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-06.