NPPES file of Aug 9, 2026

Witold Jan Mierzwa, PT

Physical Therapist · Merrionette Park, IL

Witold Jan Mierzwa, PT is a physical therapist with a practice address in Merrionette Park, Illinois, and NPI 1730254004, issued on Nov 22, 2006. Check the license with the Illinois 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
1730254004
Name
Witold Jan Mierzwa
Credential
PT
Primary taxonomy
Physical Therapist 225100000X
Practice location
11600 S Kedzie Ave, Merrionette Park, IL 60803
Phone
(708) 371-6441
Enumerated
Nov 22, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(708) 371-6429
Medicare enrollment
Enrolled (PECOS I20050222000409); 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 physical therapist records → All 12,045 in Illinois → Look up another NPI →

Also registered at 11600 S Kedzie Ave

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

  1. Chris Albanis, MDOphthalmology Physician1720040017
  2. Robert Bonk, D.O.Family Medicine Physician1609894690
  3. Michael Debre, MDInternal Medicine Physician1215044508
  4. Brianna Denton, RD, LDNRegistered Dietitian1639892144
  5. Erin Drever, MDEndocrinology, Diabetes & Metabolism Physician1750631727
  6. Lauren Ellis, FNPFamily Nurse Practitioner1558996090

Verify Witold Jan Mierzwa in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois 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 Illinois 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. Dynamic Physiotherapy Services CorpOak Lawn, IL

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

Witold Jan Mierzwa among 12,045 physical therapist records in Illinois

Witold Jan Mierzwa, PT is one of 12,045 physical therapist records with a practice address in Illinois. 36% 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 under 1% of them.

  • NPI issued2006 · under 1% of these records are older, 87% newer
  • In a Medicare fileYes · 36% of these records are
  • In the CMS Doctors and Clinicians fileYes · 37% of these records are
  • Graduated1992 · median 2015 among the 4,392 with a school on file
  • Record last updated2007 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1 physical therapist record lists a practice address in Merrionette Park

They are 1 of the 106 NPPES records with a practice address in Merrionette Park, and 12,045 physical therapist records in Illinois.

All 12,045 in Illinois → Every provider in Merrionette Park → Physical Therapist nationwide →

The 8 physical therapist records with the nearest ZIP codes

  1. Christopher Barker, PTAlsip, IL 608031124244652
  2. Veronica Cecchini, MPTAlsip, IL 608031053546531
  3. Adriana Cervantes, PTAAlsip, IL 608031356937163
  4. Deshon Eason, PTAlsip, IL 608031164443248
  5. Candice Gray, DPTAlsip, IL 608031881906493
  6. Jessica Mandac, PTAlsip, IL 608031689911323
  7. Antonia McCann, PTAlsip, IL 608031265769988
  8. Sean McNamee, PTAlsip, IL 608031972808681

Common questions

What is Witold Jan Mierzwa, PT's NPI number?

Witold Jan Mierzwa, PT's National Provider Identifier (NPI) is 1730254004, issued on Nov 22, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Witold Jan Mierzwa, PT located?

The NPPES record lists a practice address at 11600 S Kedzie Ave, Merrionette Park, IL, 60803. Phone: (708) 371-6441. Providers update this record themselves, so call before visiting.

How can I verify Witold Jan Mierzwa, PT's license?

Search the Illinois 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.