Robert Mastrianni, PT
Robert Mastrianni, PT is an Ergonomics Physical Therapist in Wallingford, CT, registered under NPI 1255476313. This provider registers 5 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 8 RESEARCH PKWY, Wallingford, CT 06492. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 3430 | CT | Ergonomics Physical Therapist primary |
| 3430 | CT | Physical Therapist |
| 3430 | CT | Geriatric Physical Therapist |
| 3430 | CT | Sports Physical Therapist |
| 3430 | CT | Orthopedic Physical Therapist |
This provider holds licence 3430 issued in CT. 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 Ergonomics covers
A licensed physical therapist who has demonstrated specialized knowledge and skills pertaining to the workplace, occupational demands, prevention of work-related injury, management of the worker with job-related symptoms or participation restrictions, and provides individual, group or population level evaluation, intervention and consulting to enhance worker performance. NUCC Health Care Provider Taxonomy, code 2251E1200X
All registered taxonomy codes
This provider registers 5 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 2251E1200X | Ergonomics Physical Therapist Ergonomics | 3430 | CT | primary |
| 225100000X | Physical Therapist | 3430 | CT | |
| 2251G0304X | Geriatric Physical Therapist Geriatrics | 3430 | CT | |
| 2251S0007X | Sports Physical Therapist Sports | 3430 | CT | |
| 2251X0800X | Orthopedic Physical Therapist Orthopedic | 3430 | CT |
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 | 1255476313 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Feb 20, 2007 |
| Last updated | Apr 26, 2026 |
| Status | Active |
| Sole proprietor | No |
| Credential | PT |
| Practice address |
8 RESEARCH PKWY Wallingford, CT 06492 (203) 294-1998 Fax (203) 294-1189 |
| Other identifiers |
712712
· Other (CT) 080003430CT13 · Other (CT) 183158 · Other (CT) 6404254 · Other (CT) 0V1691 · Other (CT) 1182831 · Other (CT) A667399 · Other (CT) |
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 | 2 | 5 | 5 | 4 | 7 | 6 | 3 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 2 | 1 | 5 | 8 | 7 | 3 | 3 | 2 |
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.