Marisa Medeiros Dasilva, MSW
Marisa Medeiros Dasilva, MSW is a Mental Health Counselor in Roxbury, MA, registered under NPI 1003652199. 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 Roxbury, based on OpenStreetMap data collected Sep 19, 2026. Parking is available about 0.36 mi away. The nearest transit stop is 609 ft away, served by Dudley St @ Dennis St. If you arrive early, there is a coffee shop 0.44 mi away.
Getting here and what is nearby
Transit Dudley St @ E Cottage St 270 ft ~2 min
Transit Dudley St @ W Cottage St 407 ft ~2 min
Transit Dudley St @ Dennis St 609 ft ~3 min
Coffee Madhouse Cafe 0.21 mi ~5 min
Parking 0.23 mi ~5 min
Parking 0.35 mi ~8 min
Dudley Street, Boston 02119
Parking 0.36 mi ~8 min
Dudley Street, Boston 02119
Coffee Victoria's Diner 0.44 mi ~9 min
Restaurant Liberty Diner 0.45 mi ~10 min
Gas station Stop & Shop Gas 0.46 mi ~10 min
Grocery Stop & Shop 0.49 mi ~10 min
1100 Massachusetts Avenue, Dorchester 02125
Mo-Su 07:00-22:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
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.
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 Mental Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YM0800X
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 | 1003652199 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 8, 2024 |
| Last updated | Jul 8, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | MSW |
| Practice address |
520 DUDLEY ST Roxbury, MA 02119 (978) 505-6286 |
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 | 6 | 5 | 2 | 1 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 5 | 4 | 1 | 9 |
Sum = 51 · next multiple of 10 = 60 · 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.