Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Gregory Grzesiak, PT

Individual provider Physical Therapist · NPI 1134361967

Gregory Grzesiak, PT is a Physical Therapist in Private Practice in Westmont, Illinois. Qualified in 2007, 19 years ago. Practices with First Venture Rehabilitation Clinics, LLC, a 6-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
19
Licensed in
IL
In the registry since
2009
What do these letters mean?
PT — Physical Therapist
A licensed therapist who treats movement, pain and injury.

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Practice location Address checks out

337 W Ogden Ave
Westmont, IL 60559-1419
Phone: (630) 323-8646
Fax: (630) 323-8656
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence 070016834 (IL)

Record details

NPI number1134361967
Entity typeIndividual (Type 1)
GenderMale
Credentials PT
Sole proprietorNo
NPI enumeratedMarch 25, 2009
Last updated in NPPESMarch 5, 2024
Certification dateMarch 5, 2024
Mailing address337 W Ogden Ave, Westmont, IL 60559-1419

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice First Venture Rehabilitation Clinics, Llc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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