Alison Mason, L.M.T.
Alison Mason, L.M.T. is a Massage Therapist in Portland, ME, registered under NPI 1003166794. 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 Portland, based on OpenStreetMap data collected Sep 9, 2026. Parking is available about 0.44 mi away. A pharmacy sits 0.45 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.41 mi away.
Getting here and what is nearby
Restaurant Portland House of Pizza 0.39 mi ~8 min
1359 Washington Avenue, Portland 04103
Mo-Su 11:00-21:00
Grocery Shaw's 0.39 mi ~8 min
Restaurant Taco Bell 0.40 mi ~8 min
Coffee Starbucks 0.41 mi ~9 min
Parking 0.44 mi ~9 min
Restaurant Dunkin' 0.44 mi ~9 min
1378 Washington Avenue, Portland 04103
04:30-19:00
Pharmacy CVS Pharmacy 0.45 mi ~9 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 |
|---|---|---|
| MT4704 | ME | Massage Therapist primary |
This provider holds licence MT4704 issued in ME. 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 Massage Therapist covers
An individual trained in the manipulation of tissues (as by rubbing, stroking, kneading, or tapping) with the hand or an instrument for remedial or hygienic purposes. NUCC Health Care Provider Taxonomy, code 225700000X
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 | 1003166794 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Sep 11, 2012 |
| Last updated | Sep 11, 2012 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | L.M.T. |
| Practice address |
371 RAY ST Portland, ME 04103 (207) 797-2570 |
| Other names |
Alison Swanton Former Legal Business Name |
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 | 1 | 6 | 6 | 7 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 6 | 3 | 7 | 9 |
Sum = 56 · next multiple of 10 = 60 · check digit = 4 · actual last digit = 4
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.