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Mrs. Michele Marie Mastalarz, MSW, LCSW

Clinical Social Worker in Milwaukee, WI · enumerated 2011.

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

National Provider Identifier

1851668669

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Registry record

Entity type Individual (Type 1)
Name Mrs. Michele Marie Mastalarz
Credential MSW, LCSW
Sex Female
Practice address 207 E Buffalo St, Suite 510, Milwaukee, WI, 53202
Phone (262) 375-1116
Fax (262) 375-1071
Enumeration date Nov 22, 2011
Last updated in NPPES Mar 29, 2014

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 8124-123 (WI) Primary
104100000X Social Worker Behavioral Health & Social Service Providers · License 128508-121 (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
128508-121 Other WI APSW
8124-123 Other WI STATE OF WI DEPARTMENT OF SAFETY AND PROFESSIONAL SERVICES, LCSW

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

Where does Michele Mastalarz practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Michele Mastalarz?
The National Provider Identifier (NPI) for Michele Mastalarz is 1851668669, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-03-29.