Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Hannah Lahmann, LCSW, CSAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1134881626

Hannah Lahmann, LCSW, CSAC is a Clinical Social Worker in Brookfield, Wisconsin. Qualified in 2018, 8 years ago. Practices with Cornerstone Counseling Services Inc, a 328-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
8
Licensed in
WI
In the registry since
2021
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

16535 W Bluemound Rd Ste 200
Brookfield, WI 53005-5906
Phone: (608) 322-7617
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 9649-123 (WI)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 16545-132 (WI)

Record details

NPI number1134881626
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW , CSAC
Sole proprietorYes
NPI enumeratedOctober 12, 2021
Last updated in NPPESNovember 18, 2023
Certification dateNovember 18, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Cornerstone Counseling Services Inc — 328 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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