Devon Mackay, LMSW
Devon Mackay, LMSW is a provider specialising in Clinical Social Worker in West Haven, CT, registered under NPI 1003618471.
Getting there
Here is what surrounds this office in West Haven, based on OpenStreetMap data collected Sep 4, 2026. Parking is available about 0.48 mi away at Connecticut Park and Ride.
Getting here and what is nearby
Parking 146 ft ~1 min
Parking 528 ft ~2 min
Restaurant El Salvadoreno 797 ft ~4 min
Convenience Krauszer's Food Stores 851 ft ~4 min
927 Campbell Avenue, West Haven 06516
Gas station First Fuel 0.35 mi ~7 min
First Avenue, West Haven
Convenience 7-Eleven 0.36 mi ~8 min
Restaurant Dunkin' 0.38 mi ~8 min
967 1st Avenue, West Haven 06516
Mo-Sa 04:00-21:00; Su 05:00-20:00
Restaurant McDonald's 0.41 mi ~9 min
1129 Campbell Avenue, West Haven 06516
Mo-Th 06:00-23:00; Fr-Sa 06:00-24:00; Su 06:00-23:00
Convenience XtraMart 0.43 mi ~9 min
760 First Avenue, West Haven 06516
Gas station Xtra Fuels 0.43 mi ~9 min
760 First Avenue, West Haven 06516
Parking Connecticut Park and Ride 0.48 mi ~10 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 |
|---|---|---|
| 016667 | CT | Clinical Social Worker primary |
This provider holds licence 016667 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 Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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 | 1003618471 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Mar 26, 2025 |
| Last updated | Aug 24, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | LMSW |
| Practice address |
950 CAMPBELL AVE West Haven, CT 06516 (203) 932-5711 |
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 | 1 | 8 | 4 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 3 | 1 | 7 | 4 | 5 |
Sum = 49 · next multiple of 10 = 50 · check digit = 1 · actual last digit = 1
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.