RADIATION THERAPY OF SOUTHEASTERN MASS, LLC
RADIATION THERAPY OF SOUTHEASTERN MASS, LLC is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1104978519, based in Mansfield, MA. It is classified under Radiation Oncology Clinic/Center.
Getting there
The practice address on file is 89 FORBES BLVD, Mansfield, MA 02048. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part B Supplier - Radiation Therapy Center
- PAC ID
- 9335248343
Medicare enrolment is recorded as approved under the provider type Part B Supplier - Radiation Therapy Center. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Oncology, Radiation covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QX0203X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1104978519 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Jan 17, 2007 |
| Last updated | May 6, 2026 |
| Status | Active |
| Practice address |
89 FORBES BLVD Mansfield, MA 02048 (857) 307-3700 Fax (857) 307-3710 |
| Other identifiers |
110077799B
(MA) |
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 | 1 | 0 | 4 | 9 | 7 | 8 | 5 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 1 | 0 | 4 | 9 | 7 | 7 | 5 | 2 |
Sum = 61 · next multiple of 10 = 70 · check digit = 9 · actual last digit = 9
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.