Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Tammy Marie Stack, PT

Individual provider Physical Therapist · NPI 1558445577

Tammy Marie Stack, PT is registered under Physical Therapist in Private Practice in Orland Park, Illinois. Qualified in 1991, 35 years ago. Practices with Impact Physical Therapy, LLC, a 42-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
35
Licensed in
IL
In the registry since
2006
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

15441 S 94th Ave
Orland Park, IL 60462-3827
Phone: (708) 981-3715
Fax: (708) 315-7087
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 10401 S Cicero Ave, Oak Lawn, IL 60453-4703 — (708) 581-4810

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence 070-007458 (IL)

Record details

NPI number1558445577
Entity typeIndividual (Type 1)
GenderFemale
Credentials PT
Sole proprietorNo
NPI enumeratedOctober 25, 2006
Last updated in NPPESOctober 21, 2020
Certification dateOctober 21, 2020

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 1991 (35 years in practice)
Group practice Impact Physical Therapy, Llc — 42 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients32
Services billed 1,136 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Impact Physical Therapy, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 42 clinicians in the practice; 12 are shown here.

Other providers in Orland Park