Kathryn Larsen, PT, DPT
Kathryn Larsen, PT, DPT is a Physical Therapist in Newton, MA, registered under NPI 1003294133. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Newton, based on OpenStreetMap data collected Sep 16, 2026. Parking is available about 0.24 mi away. The nearest transit stop is 829 ft away, served by Tremont St @ Playstead Rd.
Getting here and what is nearby
Parking 657 ft ~3 min
Transit Tremont St @ Pembroke St 797 ft ~4 min
Transit Tremont St @ Pembroke St 818 ft ~4 min
Transit Tremont St @ Playstead Rd 829 ft ~4 min
Convenience Town Line Variety 0.21 mi ~5 min
Parking 0.23 mi ~5 min
Parking 0.24 mi ~5 min
Restaurant Greenhouse Kitchen 0.49 mi ~10 min
Restaurant Thai North 0.49 mi ~10 min
Restaurant Pizza Etc... 0.50 mi ~10 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 9578 | MA | Physical Therapist primary |
This provider holds licence 9578 issued in MA. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Physical Therapist covers
Physical therapists (PTs) are licensed health care professionals who diagnose and treat individuals of all ages, from newborns to the very oldest, who have medical problems or other health-related conditions that limit their abilities to move and perform functional activities in their daily lives. PTs examine each individual and develop a plan using treatment techniques to promote the ability to move, reduce pain, restore function, and prevent disability. In addition, PTs work with individuals to prevent the loss of mobility before it occurs by developing fitness- and wellness-oriented programs for healthier and more active lifestyles. PTs: 1.Diagnose and manage movement dysfunction and enhance physical and functional abilities. 2.Restore, maintain, and promote not only optimal physical function but optimal wellness and fitness and optimal quality of life as it relates to movement and health. 3.Prevent the onset, symptoms, and progression of impairments, functional limitations, and disabilities that may result from diseases, disorders, conditions, or injuries. 4.Treat conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems. 5.Address the negative effects attributable to unique personal and environmental factors as they relate to human performance. 6.PTs provide care for people in a variety of settings, including hospitals, private practices, outpatient clinics, home health agencies, schools, sports and fitness facilities, work settings, and nursing homes. State licensure is required in each state in which a PT practices. NUCC Health Care Provider Taxonomy, code 225100000X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003294133 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 8, 2015 |
| Last updated | Jul 21, 2015 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | PT, DPT |
| Practice address |
60 PEMBROKE ST Newton, MA 02458 (617) 964-3314 |
| Other names |
Kathy Larsen Doing Business As |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 9 | 4 | 1 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 9 | 8 | 1 | 6 |
Sum = 57 · next multiple of 10 = 60 · check digit = 3 · actual last digit = 3
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.