NPPES file of Aug 9, 2026

Aaron T. Grimmer, O.T.

Occupational Therapist · Milwaukee, WI

Aaron T. Grimmer, O.T. is an occupational therapist with a practice address in Milwaukee, Wisconsin, and NPI 1487009536, issued on Apr 26, 2016. Check the license (Wisconsin 5802, 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
1487009536
Name
Aaron T. Grimmer
Credential
O.T.
Primary taxonomy
Occupational Therapist 225X00000X
License numbers
5802 WI
5802-26 WI
Self-reported in NPPES; status is on the state search
Practice location
7878 N 76TH St, Milwaukee, WI 53223
Phone
(414) 586-5710
Enumerated
Apr 26, 2016
Record last updated
Jan 4, 2024
Medicaid ID
100073959 WI
Medicare enrollment
Enrolled (PECOS I20180201001589); accepts Medicare assignment
Medical or professional school
University Of Wisconsin School Of Medicine, 2015
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.
Download card Updates feed

8 nearest occupational therapist records → All 3,827 in Wisconsin → Look up another NPI →

Also registered at 7878 N 76TH St

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

  1. Linda BarthNutrition Education Nutritionist1235307786
  2. Kayla Brezovar, DPTPhysical Therapist1639851835
  3. Joseph Bridges, PTPhysical Therapist1093801532
  4. Tara Bully, FNP, APNPNurse Practitioner1922166685
  5. Heidi Doerr, MSPT, OMPTPhysical Therapist1437238391
  6. Nick Douglas, PTPhysical Therapist1780229039

Verify Aaron T. Grimmer 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 5802    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Bills Medicare through one group practice

  1. Aurora Advanced Healthcare, Inc.Milwaukee, WI

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

Aaron T. Grimmer among 3,827 occupational therapist records in Wisconsin

Aaron T. Grimmer, O.T. 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 2016, is newer than 59% of them.

  • NPI issued2016 · 59% of these records are older, 38% newer
  • In a Medicare fileYes · 10% of these records are
  • In the CMS Doctors and Clinicians fileYes · 11% of these records are
  • Graduated2015 · median 2013 among the 437 with a school on file
  • Record last updated2024 · 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).

380 occupational therapist records list a practice address in Milwaukee

They are 380 of the 18,389 NPPES records with a practice address in Milwaukee, and 3,827 occupational therapist records in Wisconsin.

All 3,827 in Wisconsin → Every provider in Milwaukee → Occupational Therapist nationwide →

The 8 occupational therapist records with the nearest ZIP codes

  1. Jasmine Burnom, OTR; CLTMilwaukee, WI 532231346771177
  2. Lisa Dranzik, OTRMilwaukee, WI 532231962678219
  3. Susan Durant, OTRMilwaukee, WI 532231548433410
  4. Anastasia Gentz, OTRMilwaukee, WI 532231205002482
  5. Sara Gresbach, OTRLMilwaukee, WI 532231639134109
  6. Beth Kissner, OTRMilwaukee, WI 532231780859355
  7. Rachel Lentz, MS OTRMilwaukee, WI 532231063719789
  8. Jennifer MeyersMilwaukee, WI 532231356891014

Common questions

What is Aaron T. Grimmer, O.T.'s NPI number?

Aaron T. Grimmer, O.T.'s National Provider Identifier (NPI) is 1487009536, issued on Apr 26, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Aaron T. Grimmer, O.T. located?

The NPPES record lists a practice address at 7878 N 76TH St, Milwaukee, WI, 53223. Phone: (414) 586-5710. Providers update this record themselves, so call before visiting.

How can I verify Aaron T. Grimmer, O.T.'s license?

NPPES lists Wisconsin license number 5802, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.