NPPES file of Aug 9, 2026

Jennifer Nielsen, OT

Occupational Therapist · Mesa, AZ

Jennifer Nielsen, OT is an occupational therapist with a practice address in Mesa, Arizona, and NPI 1144085838, issued on Feb 21, 2024. Check the license with the Arizona 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
1144085838
Name
Jennifer Nielsen
Credential
OT
Primary taxonomy
Occupational Therapist 225X00000X
Practice location
2225 W Southern Ave, Mesa, AZ 85202
Phone
(623) 888-3502
Enumerated
Feb 21, 2024
Record last updated
Feb 21, 2024
Medicare enrollment
Enrolled (PECOS I20240529001546); 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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8 nearest occupational therapist records → All 2,133 in Arizona → Look up another NPI →

Also registered at 2225 W Southern Ave

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

  1. Sara Becker, DPTPhysical Therapist1780192906
  2. Maria CamachoSpeech-Language Pathologist1679073878
  3. Kelli Cooper, OTR/L, PTAOccupational Therapist1639361124
  4. Ariel Demoret, M.S., CCC-SLPSpeech-Language Pathologist1497130454
  5. Kimberly Hubbard, PT, DPTOrthopedic Physical Therapist1689175747
  6. Sarah King, OTOccupational Therapist1619243177

Verify Jennifer Nielsen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck 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 Arizona license search

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Bills Medicare through one group practice

  1. Advanced Neurologic RehabilitationGilbert, AZ

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

Jennifer Nielsen among 2,133 occupational therapist records in Arizona

Jennifer Nielsen, OT is one of 2,133 occupational therapist records with a practice address in Arizona. 11% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 89% of them.

  • NPI issued2024 · 89% of these records are older, 6% newer
  • In a Medicare fileYes · 11% of these records are
  • In the CMS Doctors and Clinicians fileYes · 12% of these records are
  • Graduated2023 · median 2019 among the 263 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

177 occupational therapist records list a practice address in Mesa

They are 177 of the 9,151 NPPES records with a practice address in Mesa, and 2,133 occupational therapist records in Arizona.

All 2,133 in Arizona → Every provider in Mesa → Occupational Therapist nationwide →

The 8 occupational therapist records with the nearest ZIP codes

  1. Jane AitkenMesa, AZ 852021386144772
  2. Sheila Basler Powell, OTR/LMesa, AZ 852021750423588
  3. Kelli Cooper, OTR/L, PTAMesa, AZ 852021639361124
  4. Jennifer Dachtyl, OTR/LMesa, AZ 852021952664070
  5. Andrea Ellensohn, OTMesa, AZ 852021043336167
  6. Casey Emery, OTMesa, AZ 852021235318650
  7. Mickayla Holt, OTR/LMesa, AZ 852021508538604
  8. Sarah King, OTMesa, AZ 852021619243177

Common questions

What is Jennifer Nielsen, OT's NPI number?

Jennifer Nielsen, OT's National Provider Identifier (NPI) is 1144085838, issued on Feb 21, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Nielsen, OT located?

The NPPES record lists a practice address at 2225 W Southern Ave, Mesa, AZ, 85202. Phone: (623) 888-3502. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Nielsen, OT's license?

Search the Arizona 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.