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

Maribeth Rose Dettlaff, MSW, LCSW, CADC

Addiction (Substance Use Disorder) Counselor in Waukesha, WI · enumerated 2006.

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

National Provider Identifier

1629132840

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Registry record

Entity type Individual (Type 1)

Name Maribeth Rose Dettlaff

Credential MSW, LCSW, CADC

Sex Female

Practice address Waukesha, WI, 53188

Phone (262) 548-7399

Enumeration date Dec 21, 2006

Last updated in NPPES Sep 11, 2025

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

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 12548 (WI) Primary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 521-123 (WI) Secondary

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
39572300	Other	WI	T-19 PROVIDER NUMBER

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 Maribeth Dettlaff?

The National Provider Identifier (NPI) for Maribeth Dettlaff is 1629132840, a Type 1 (individual) record in the CMS NPPES registry.

Where does Maribeth Dettlaff practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.