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

Ms. Bonnie J Wessler, L.C.S.W.

Clinical Social Worker in Warrenton, MO · enumerated 2006.

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

National Provider Identifier

1578631321

Verified

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Registry record

Entity type Individual (Type 1)

Name Ms. Bonnie J Wessler

Credential L.C.S.W.

Sex Female

Practice address Warrenton, MO, 63383

Phone (636) 456-7715

Fax (636) 456-0935

Enumeration date Dec 1, 2006

Last updated in NPPES Jul 9, 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 002186 (MO) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier	Type	State	Issuer
493515506	Medicaid	MO	-

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

Where does Bonnie Wessler practice?

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

What is the NPI number for Bonnie Wessler?

The National Provider Identifier (NPI) for Bonnie Wessler is 1578631321, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.