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

William Harrington, PT

Individual provider Physical Therapist · NPI 1043299902

William Harrington, PT is registered under Physical Therapist in Private Practice in Waltham, Massachusetts. Qualified in 2000, 26 years ago. Practices with Pro Sports Therapy Inc, a 13-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
26
Licensed in
MA
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

840 Winter St Attn: Pro Sports Therapy
Waltham, MA 02451 Not confirmed with CMS for 13 years — call before visiting
Phone: (781) 487-9944
Fax: (781) 487-9966
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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 15279 (MA)

Record details

NPI number1043299902
Entity typeIndividual (Type 1)
GenderMale
Credentials PT
Sole proprietorNo
NPI enumeratedJanuary 10, 2006
Last updated in NPPESJune 10, 2013

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2000 (26 years in practice)
Group practice Pro Sports Therapy Inc — 13 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 patients272
Services billed 6,181 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 Pro Sports Therapy Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 13 clinicians in the practice; 10 are shown here.

Other providers in Waltham