David Francis Timmer, M.S.W.
Clinical Social Worker · Hales Corners, WI
David Francis Timmer, M.S.W. is a clinical social worker with a practice address in Hales Corners, Wisconsin, and NPI 1639286552, issued on Aug 24, 2006. Check the license (Wisconsin 1722 123, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- David Francis Timmer
- Credential
- M.S.W.
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License numbers
- 1722 123 WI
284 124 WI
Self-reported in NPPES; status is on the state search - Practice location
- 5300 S 108TH St, Hales Corners, WI 53130
- Phone
- (414) 529-2591
- Enumerated
- Aug 24, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (414) 529-2669
- Medicaid ID
- 39653900 WI
- Medicare enrollment
- Enrolled (PECOS I20070911000691); 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 5300 S 108TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Barbara Baer, MA LMFT LPC LCSWMarriage & Family Therapist1164406948
- Marianne Skrobiak, LPCAddiction (Substance Use Disorder) Counselor1285616656
Verify David Francis Timmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1722 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
- Trillium Care Group LLCWest Allis, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David Francis Timmer among 4,142 clinical social worker records in Wisconsin
David Francis Timmer, M.S.W. 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 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 80% newer
- In a Medicare fileYes · 22% of these records are
- In the CMS Doctors and Clinicians fileYes · 29% of these records are
- Graduated1989 · median 2010 among the 1,186 with a school on file
- Record last updated2025 · 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).
6 clinical social worker records list a practice address in Hales Corners
They are 6 of the 166 NPPES records with a practice address in Hales Corners, and 4,142 clinical social worker records in Wisconsin.
All 4,142 in Wisconsin → Every provider in Hales Corners → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Janet Doyle, MSWHales Corners, WI 531301568620441
- Alison Durfee, LAPSWHales Corners, WI 531301497127567
- William LeonHales Corners, WI 531301821347386
- Debra ReidHales Corners, WI 531301548920580
- Dennis Wolf, LCSWHales Corners, WI 531301588713705
- Mary NewbauerGreendale, WI 531291366895989
- Emma Valdez, LCSWGreendale, WI 531291023795523
- Brian Wimmer, LCSWGreendale, WI 531291366793432
Common questions
What is David Francis Timmer, M.S.W.'s NPI number?
David Francis Timmer, M.S.W.'s National Provider Identifier (NPI) is 1639286552, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David Francis Timmer, M.S.W. located?
The NPPES record lists a practice address at 5300 S 108TH St, Hales Corners, WI, 53130. Phone: (414) 529-2591. Providers update this record themselves, so call before visiting.
How can I verify David Francis Timmer, M.S.W.'s license?
NPPES lists Wisconsin license number 1722 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.