NPPES file of Aug 9, 2026

Kathryn Hamm, APSW

Clinical Social Worker · Milwaukee, WI

Kathryn Hamm, APSW is a clinical social worker with a practice address in Milwaukee, Wisconsin, and NPI 1891404901, issued on Nov 17, 2022. Check the license (Wisconsin 134056-121, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891404901
Name
Kathryn Hamm
Credential
APSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
134056-121 WI
Self-reported in NPPES; status is on the state search
Practice location
229 E Wisconsin Ave Ste 600, Milwaukee, WI 53202
Phone
(414) 224-3737
Enumerated
Nov 17, 2022
Record last updated
Nov 17, 2022
Medicare enrollment
Enrolled (PECOS I20240704000509); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 229 E Wisconsin Ave Ste 600

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Debora Magill, LCSWClinical Social Worker1578138756
  2. Sarah Patel, LPCMental Health Counselor1790310720
  3. Allyson Wise, LCSWClinical Social Worker1831457217

Verify Kathryn Hamm in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
    Search for license 134056-121
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Wisconsin license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Psychiatric Consultants And Therapists SCMilwaukee, WI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kathryn Hamm among 4,142 clinical social worker records in Wisconsin

Kathryn Hamm, APSW is one of 4,142 clinical social worker records with a practice address in Wisconsin. 22% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 77% of them.

  • NPI issued2022 · 77% of these records are older, 17% newer
  • In a Medicare fileYes · 22% of these records are
  • In the CMS Doctors and Clinicians fileYes · 29% of these records are
  • Graduated2009 · median 2010 among the 1,186 with a school on file
  • Record last updated2022 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

608 clinical social worker records list a practice address in Milwaukee

They are 608 of the 18,389 NPPES records with a practice address in Milwaukee, and 4,142 clinical social worker records in Wisconsin.

The 8 clinical social worker records with the nearest ZIP codes

  1. Mary Jo Caminiti, ACSWMilwaukee, WI 532021760415160
  2. Susan Dellutri, LCSW, LMFT, CSACMilwaukee, WI 532021689789851
  3. Mary Jane Demet, MSW, LCSWMilwaukee, WI 532021841219169
  4. Grace Jessen, LCSWMilwaukee, WI 532021306954920
  5. Jane Kelley, LCSWMilwaukee, WI 532021689680860
  6. Michael Matthias, LCSWMilwaukee, WI 532021417991936
  7. Patricia Miller, LCSWMilwaukee, WI 532021598872087
  8. Joelle Ottoson, MSW, LCSW, ICS,CSACMilwaukee, WI 532021679591416

Common questions

What is Kathryn Hamm, APSW's NPI number?

Kathryn Hamm, APSW's National Provider Identifier (NPI) is 1891404901, issued on Nov 17, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Kathryn Hamm, APSW located?

The NPPES record lists a practice address at 229 E Wisconsin Ave Ste 600, Milwaukee, WI, 53202. Phone: (414) 224-3737. Providers update this record themselves, so call before visiting.

How can I verify Kathryn Hamm, APSW's license?

NPPES lists Wisconsin license number 134056-121, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.