Lynsey P. Retzlaff, MSW, LCSW, SAC-IT
Clinical Social Worker · Waukesha, WI
Lynsey P. Retzlaff, MSW, LCSW, SAC-IT is a clinical social worker with a practice address in Waukesha, Wisconsin, and NPI 1023760543, issued on Jan 25, 2022. Check the license (Wisconsin 9335-123, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Lynsey P. Retzlaff
- Credential
- MSW, LCSW, SAC-IT
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 9335-123 WI
18167-130 WI
Self-reported in NPPES; status is on the state search - Practice location
- 741 N Grand Ave Ste 302, Waukesha, WI 53186
- Phone
- (262) 789-1191
- Enumerated
- Jan 25, 2022
- Record last updated
- Feb 25, 2022
- Medicare enrollment
- Enrolled (PECOS I20220209001251); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 4,142 in Wisconsin → Look up another NPI →
Also registered at 741 N Grand Ave Ste 302
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Kara Guevara, MSW, LCSWClinical Social Worker1841865250
- Courtney GutantesProfessional Counselor1770938219
- Karen Henry, MS, LPC,CSACProfessional Counselor1366793903
Verify Lynsey P. Retzlaff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 9335-123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Cornerstone Counseling Services IncWaukesha, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lynsey P. Retzlaff among 4,142 clinical social worker records in Wisconsin
Lynsey P. Retzlaff, MSW, LCSW, SAC-IT 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
- Graduated2016 · 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).
156 clinical social worker records list a practice address in Waukesha
They are 156 of the 2,814 NPPES records with a practice address in Waukesha, and 4,142 clinical social worker records in Wisconsin.
All 4,142 in Wisconsin → Every provider in Waukesha → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Edward Cohen, LCSWWaukesha, WI 531861730292491
- Judith Grady, LCSWWaukesha, WI 531861538274626
- James Hemmens, MSWWaukesha, WI 531861164505145
- Daniel Hermsen, LCSWWaukesha, WI 531861013078518
- David Hubbard, PH.D.Waukesha, WI 531861972611721
- Alan Jordan, LCSWWaukesha, WI 531861720008352
- Carla Kaminski, LCSWWaukesha, WI 531861750498283
- Ray Kinney, M.S.Waukesha, WI 531861881758928
Common questions
What is Lynsey P. Retzlaff, MSW, LCSW, SAC-IT's NPI number?
Lynsey P. Retzlaff, MSW, LCSW, SAC-IT's National Provider Identifier (NPI) is 1023760543, issued on Jan 25, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Lynsey P. Retzlaff, MSW, LCSW, SAC-IT located?
The NPPES record lists a practice address at 741 N Grand Ave Ste 302, Waukesha, WI, 53186. Phone: (262) 789-1191. Providers update this record themselves, so call before visiting.
How can I verify Lynsey P. Retzlaff, MSW, LCSW, SAC-IT's license?
NPPES lists Wisconsin license number 9335-123, 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.