NPPES file of Aug 9, 2026

Jerry Jon Trefz, OTR/L

Occupational Therapist · Waverly, IA

Jerry Jon Trefz, OTR/L is an occupational therapist with a practice address in Waverly, Iowa, and NPI 1124805296, issued on Sep 12, 2023. Check the license (Iowa 001822, as entered in NPPES) with the Iowa 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
1124805296
Name
Jerry Jon Trefz
Credential
OTR/L
Primary taxonomy
Occupational Therapist 225X00000X
License number
001822 IA
Self-reported in NPPES; status is on the state search
Practice location
217 E Bremer Ave, Waverly, IA 50677
Phone
(319) 352-4544
Enumerated
Sep 12, 2023
Record last updated
Sep 12, 2023
Fax
(319) 352-4655
Medicare enrollment
Enrolled (PECOS I20240529000620); 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 1,115 in Iowa → Look up another NPI →

Also registered at 217 E Bremer Ave

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

  1. Andrew Allen, LPTPhysical Therapist1184285595
  2. Amanda Babcock, OTROccupational Therapist1629625975
  3. Seonhee Baik, OTR/LOccupational Therapist1306486303
  4. Kimberly Baumann, SLPSpeech-Language Pathologist1841841400
  5. Julie Becker, MS-CCC-SLPSpeech-Language Pathologist1730841040
  6. Haley Beckert, OTR/LOccupational Therapist1629831045

Verify Jerry Jon Trefz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Iowa board licenses this profession
    Search for license 001822    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 Iowa 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.

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Bills Medicare through one group practice

  1. Fox Rehab OT IA LLCNorwalk, IA

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

Jerry Jon Trefz among 1,115 occupational therapist records in Iowa

Jerry Jon Trefz, OTR/L is one of 1,115 occupational therapist records with a practice address in Iowa. 18% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2023, is newer than 77% of them.

  • NPI issued2023 · 77% of these records are older, 18% newer
  • In a Medicare fileYes · 18% of these records are
  • In the CMS Doctors and Clinicians fileYes · 20% of these records are
  • Graduated1992 · median 2018 among the 225 with a school on file
  • Record last updated2023 · 59% 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 Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

51 occupational therapist records list a practice address in Waverly

They are 51 of the 343 NPPES records with a practice address in Waverly, and 1,115 occupational therapist records in Iowa.

All 1,115 in Iowa → Every provider in Waverly → Occupational Therapist nationwide →

The 8 occupational therapist records with the nearest ZIP codes

  1. Kelly Jo Bloedel, OTR/LWaverly, IA 506771588960793
  2. Linda Croal, OTWaverly, IA 506771770672529
  3. Denise Dermody, OTRWaverly, IA 506771528389475
  4. Jean Harrington Britt, OTRLWaverly, IA 506771366501884
  5. Leasa Lantzky, OTRWaverly, IA 506771801008545
  6. Holly Little, OTRLWaverly, IA 506771346309879
  7. Nicole O'Gara, OTWaverly, IA 506771316187248
  8. Steffany Sass, OTRWaverly, IA 506771508007055

Common questions

What is Jerry Jon Trefz, OTR/L's NPI number?

Jerry Jon Trefz, OTR/L's National Provider Identifier (NPI) is 1124805296, issued on Sep 12, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Jerry Jon Trefz, OTR/L located?

The NPPES record lists a practice address at 217 E Bremer Ave, Waverly, IA, 50677. Phone: (319) 352-4544. Providers update this record themselves, so call before visiting.

How can I verify Jerry Jon Trefz, OTR/L's license?

NPPES lists Iowa license number 001822, as entered by the provider. Search the Iowa 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.