Quick answers
- Does Witold J. Mierzwa accept Medicare assignment?
- Yes. Medicare's clinician data says Witold J. Mierzwa accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Witold J. Mierzwa see?
- In 2024, CMS data shows 80 Original Medicare patients and 3,701 services for Witold J. Mierzwa. This counts Original Medicare only and measures volume, not quality.
- What is Witold J. Mierzwa's NPI number?
- 1730254004. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Witold J. Mierzwa, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 80 |
|---|---|
| Services billed to Medicare | 3,701 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes (97110)1,597 services
- Therapy procedure using manual technique, each 15 minutes (97140)1,021 services
- Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes (97112)748 services
- Therapy procedure using functional activities (97530)252 services
- Evaluation for physical therapy, typically 45 minutes (97163)40 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis59%
- Diabetes39%
- Ischemic heart disease29%
- Chronic kidney disease23%
Practice locations
Addresses where Witold J. Mierzwa is enrolled with Medicare (CMS data updated October 2, 2026).
- 4601 W 103rd StOak Lawn, IL 60453 (708) 422‑3422
Group practices
Medicare enrollment lists Witold J. Mierzwa as a member of this group (CMS data updated October 2, 2026).
- Dynamic Physiotherapy Services Corp2 clinicians in the group
Specialties
Find other clinicians: Physical Therapist in Private Practice, Illinois →
Other physical therapists in Oak Lawn
Clinicians with the same Medicare primary specialty in Oak Lawn, IL — not a recommendation.
Clinician information
| Credential | PT |
|---|---|
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730254004 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians