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

Brian Sullivan, PT

Individual provider Physical Therapist · NPI 1346419116

Brian Sullivan, PT is registered under Physical Therapist in Private Practice in Greenfield, Wisconsin. Qualified in 1992, 34 years ago. Practices with Athletic and Therapeutic Institute of Milwaukee, LLC, a 48-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
34
Licensed in
WI
In the registry since
2008
Specialties on file
2
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

4861 S 27th St
Greenfield, WI 53221-2603
Phone: (414) 325-3325
Fax: (414) 325-3334
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • N15w28300 Golf Rd, Pewaukee, WI 53072-4800 — (262) 303-5055

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence 4445-24 (WI)
Physical Therapist Taxonomy 225100000X · Licence 4445-024 (WI)

Record details

NPI number1346419116
Entity typeIndividual (Type 1)
GenderMale
Credentials PT
Sole proprietorNo
NPI enumeratedFebruary 26, 2008
Last updated in NPPESJuly 28, 2025
Certification dateJuly 28, 2025

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 1992 (34 years in practice)
Group practice Athletic And Therapeutic Institute Of Milwaukee, Llc — 48 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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 patients67
Services billed 1,654 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Athletic and Therapeutic Institute of Milwaukee, LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 48 clinicians in the practice; 12 are shown here.

Other providers in Greenfield