Michele Mastalarz, MSW, LCSW
NPI 1851668669 · Clinical Social Worker · Milwaukee, WI
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michele Mastalarz, MSW, LCSW is a Clinical Social Worker provider in Milwaukee, WI (NPI 1851668669).
Provider details
- NPI number
- 1851668669
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 8124-123 (WI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-11-22
- Last updated
- 2014-03-29
Frequently asked questions
- What is Michele Mastalarz's NPI number?
- Michele Mastalarz's National Provider Identifier (NPI) is 1851668669, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michele Mastalarz's specialty?
- Michele Mastalarz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Michele Mastalarz located?
- Michele Mastalarz's practice location on file with NPPES is 207 E Buffalo St, Milwaukee, WI 53202-5739.
- What is Michele Mastalarz's phone number?
- The practice phone number listed in the NPPES registry for Michele Mastalarz is (262) 375-1116.
- Does Michele Mastalarz accept Medicare?
- Michele Mastalarz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michele Mastalarz's NPI active?
- Yes — Michele Mastalarz's NPI (1851668669) is active in the NPPES registry as of the last update on 2014-03-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.