NPPES file of Aug 9, 2026

Greg Mierzwa

Physical Therapist · Chicago Ridge, IL

Greg Mierzwa is a physical therapist with a practice address in Chicago Ridge, Illinois, and NPI 1689030199, issued on Jan 13, 2016. Check the license (Illinois 070018409, as entered in NPPES) 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
1689030199
Name
Greg Mierzwa
Primary taxonomy
Physical Therapist 225100000X
License numbers
070018409 IL
05010519A IN
Self-reported in NPPES; status is on the state search
Practice location
10300 Southwest Hwy, Chicago Ridge, IL 60415
Phone
(708) 425-1100
Enumerated
Jan 13, 2016
Record last updated
Apr 14, 2025
Medicare enrollment
Enrolled (PECOS I20210616001460); 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 10300 Southwest Hwy

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

  1. Paul BooneOccupational Therapy Assistant1568731388
  2. Reilly Bootle, M.S. CCC-SLPSpeech-Language Pathologist1821690397
  3. Kristin BragielOccupational Therapist1508228677
  4. Jonathan Casabal, PTAPhysical Therapy Assistant1912364928
  5. Jenea CrawfordNurse's Aide1508708967
  6. Narmen DaikSpeech-Language Pathologist1396412367

Verify Greg Mierzwa in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 070018409    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 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. Vital Care Wound Solutions COSchaumburg, IL

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

Greg Mierzwa among 12,045 physical therapist records in Illinois

Greg Mierzwa 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 2016, is newer than 59% of them.

  • NPI issued2016 · 59% of these records are older, 37% newer
  • In a Medicare fileYes · 36% of these records are
  • In the CMS Doctors and Clinicians fileYes · 37% of these records are
  • Graduated2003 · median 2015 among the 4,392 with a school on file
  • Record last updated2025 · 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).

8 physical therapist records list a practice address in Chicago Ridge

They are 8 of the 195 NPPES records with a practice address in Chicago Ridge, and 12,045 physical therapist records in Illinois.

All 12,045 in Illinois → Every provider in Chicago Ridge → Physical Therapist nationwide →

The 8 physical therapist records with the nearest ZIP codes

  1. Agustin Espinosa, PTChicago Ridge, IL 604151649508094
  2. Mary Green, PTChicago Ridge, IL 604151043769276
  3. Char Haran, MPTChicago Ridge, IL 604151144652827
  4. Amy Lohan, PTChicago Ridge, IL 604151891868907
  5. Mark MartinChicago Ridge, IL 604151922888486
  6. Eric Sagal, PTChicago Ridge, IL 604151649514464
  7. Valerie Walter, DPTChicago Ridge, IL 604151053204156
  8. Kristopher Harrison, PHYSICAL THERAPYDiamond, IL 604161679679187

Common questions

What is Greg Mierzwa's NPI number?

Greg Mierzwa's National Provider Identifier (NPI) is 1689030199, issued on Jan 13, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Greg Mierzwa located?

The NPPES record lists a practice address at 10300 Southwest Hwy, Chicago Ridge, IL, 60415. Phone: (708) 425-1100. Providers update this record themselves, so call before visiting.

How can I verify Greg Mierzwa's license?

NPPES lists Illinois license number 070018409, as entered by the provider. 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.