Nathan Allen, LMSW
Nathan Allen, LMSW is a provider specialising in Social Worker in Willimantic, CT, registered under NPI 1003771940.
Getting there
Here is what surrounds this office in Willimantic, based on OpenStreetMap data collected Oct 11, 2026. Parking is available about 694 ft away. The nearest transit stop is 811 ft away, served by Valley at Childcare. A pharmacy sits 0.32 mi from the entrance (Walgreens), which helps if you leave with a prescription.
Getting here and what is nearby
Restaurant Taco Bell 229 ft ~1 min
Parking 354 ft ~2 min
1315 Main Street, Willimantic 06226
Transit Tyler Square 422 ft ~2 min
Transit Tyler Square 441 ft ~2 min
Restaurant Oriental Cafe 412 ft ~2 min
Parking 546 ft ~3 min
1315 Main Street, Willimantic 06226
Restaurant Moe's Southwest Grill 503 ft ~2 min
Convenience Sun Mart Smoke Shop and Convenience Store 592 ft ~3 min
Gas station Stop & Shop 590 ft ~3 min
Parking 694 ft ~3 min
1391 Main Street, Willimantic 06226
Transit Valley at Childcare 811 ft ~4 min
Grocery Stop & Shop 945 ft ~4 min
1391 Main Street, Willimantic 06226
Mo-Sa 07:00-22:00; Su 07:00-21:00
Pharmacy CVS Pharmacy 1,027 ft ~4 min
Gas station Valero 0.24 mi ~5 min
Convenience Valero 0.25 mi ~6 min
Pharmacy Walgreens 0.32 mi ~7 min
Convenience Cumberland Farms 0.33 mi ~7 min
Gas station Cumberland Farms 0.33 mi ~7 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 |
|---|---|---|
| 11797 | CT | Social Worker primary |
This provider holds licence 11797 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 Social Worker covers
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public. NUCC Health Care Provider Taxonomy, code 104100000X
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 | 1003771940 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Dec 23, 2025 |
| Last updated | Dec 23, 2025 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | LMSW |
| Practice address |
1310 MAIN ST Willimantic, CT 06226 (860) 731-5522 Fax (860) 731-5536 |
| Mailing address |
2 WATERSIDE XING STE 40 Windsor, CT 06095 |
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 | 7 | 7 | 1 | 9 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 5 | 7 | 2 | 9 | 8 |
Sum = 60 · next multiple of 10 = 60 · check digit = 0 · actual last digit = 0
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.