Margaret Mahler, OTR
Occupational Therapist · Greenfield, WI
Margaret Mahler, OTR is an occupational therapist with a practice address in Greenfield, Wisconsin, and NPI 1760885966, issued on Oct 1, 2014. Check the license (Wisconsin 5464-26, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Mahler
- Credential
- OTR
- Primary taxonomy
- Occupational Therapist 225X00000X
- License number
- 5464-26 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Layton Ave, Greenfield, WI 53228
- Phone
- (414) 425-5600
- Enumerated
- Oct 1, 2014
- Record last updated
- Mar 4, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170728001354); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2013
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest occupational therapist records → All 3,827 in Wisconsin → Look up another NPI →
Also registered at 9200 W Layton Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lauren Beres, PTPhysical Therapist1649798570
Verify Margaret Mahler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 5464-26Check 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
- Paxxon Healthcare Services LLCShorewood, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Mahler among 3,827 occupational therapist records in Wisconsin
Margaret Mahler, OTR is one of 3,827 occupational therapist records with a practice address in Wisconsin. 10% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 52% of them.
- NPI issued2014 · 52% of these records are older, 44% newer
- In a Medicare fileYes · 10% of these records are
- In the CMS Doctors and Clinicians fileYes · 11% of these records are
- Graduated2013 · median 2013 among the 437 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225X00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
63 occupational therapist records list a practice address in Greenfield
They are 63 of the 961 NPPES records with a practice address in Greenfield, and 3,827 occupational therapist records in Wisconsin.
All 3,827 in Wisconsin → Every provider in Greenfield → Occupational Therapist nationwide →
The 8 occupational therapist records with the nearest ZIP codes
- Donna Abler, OTRGreenfield, WI 532281396039939
- Stephaney Bublitz, OTR/LGreenfield, WI 532281013589035
- Mikayla Kornowski, OTRGreenfield, WI 532281578045266
- Courtney KowalczykGreenfield, WI 532281083173686
- Paula Krystowiak, OTRGreenfield, WI 532281528182292
- Alissa MartinezGreenfield, WI 532281720659493
- Jamie Mengert, MOTGreenfield, WI 532281831868389
- Janis Schnell, OTGreenfield, WI 532281891916458
Common questions
What is Margaret Mahler, OTR's NPI number?
Margaret Mahler, OTR's National Provider Identifier (NPI) is 1760885966, issued on Oct 1, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Mahler, OTR located?
The NPPES record lists a practice address at 9200 W Layton Ave, Greenfield, WI, 53228. Phone: (414) 425-5600. Providers update this record themselves, so call before visiting.
How can I verify Margaret Mahler, OTR's license?
NPPES lists Wisconsin license number 5464-26, 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.