Brett Hannigan
Brett Hannigan is a provider specialising in Case Manager/Care Coordinator in Dorchester, MA, registered under NPI 1003665332. 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 Dorchester, based on OpenStreetMap data collected Oct 13, 2026. Parking is available about 0.28 mi away. The nearest transit stop is 269 ft away, served by Washington St @ Southern Ave. A pharmacy sits 0.34 mi from the entrance (CVS Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Transit Talbot Ave @ Southern Ave 157 ft ~1 min
Restaurant McDonald's 139 ft ~1 min
605 Washington Street, Dorchester 02124
Mo-Su 07:00-20:00
Transit Talbot Ave @ Norfolk St 193 ft ~1 min
Transit Washington St @ Southern Ave 269 ft ~2 min
Parking 0.24 mi ~5 min
Parking 0.27 mi ~6 min
Parking 0.28 mi ~6 min
Restaurant KFC 0.30 mi ~7 min
465 Washington Street, Dorchester 02124
Su-Th 10:00-23:00; Fr-Sa 10:00-24:00
Pharmacy CVS Pharmacy 0.34 mi ~7 min
451 Washington Street, Dorchester 02124
Grocery Daily Table 0.34 mi ~7 min
450 Washington Street, Dorchester 02124
Mo-Sa 09:00-20:00, Su 11:00-18:00
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 Case Manager/Care Coordinator covers
A person who provides case management services and assists an individual in gaining access to needed medical, social, educational, and/or other services. The person has the ability to provide an assessment and review of completed plan of care on a periodic basis. This person is also able to take collaborative action to coordinate the services with other providers and monitor the enrollee's progress toward the cost-effective achievement of objectives specified in the plan of care. Credentials may vary from an experience in the fields of psychology, social work, rehabilitation, nursing or a closely related human service field, to a related Assoc of Arts Degree or to nursing credentials. Some states may require certification in case management. NUCC Health Care Provider Taxonomy, code 171M00000X
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 | 1003665332 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 17, 2024 |
| Last updated | May 17, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Practice address |
12 SOUTHERN AVE Dorchester, MA 02124 (617) 708-0870 |
| Mailing address |
58 BROCKTON AVE Scituate, MA 02066 |
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 | 6 | 5 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 6 | 1 | 3 | 6 |
Sum = 48 · next multiple of 10 = 50 · check digit = 2 · actual last digit = 2
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.