Alex Santos, LCSW
Alex Santos, LCSW is a provider specialising in Clinical Social Worker in Brighton, MA, registered under NPI 1003599101. 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 Brighton, based on OpenStreetMap data collected Sep 16, 2026. Parking is available about 0.28 mi away. The nearest transit stop is 0.31 mi away, served by Cambridge St @ N Beacon St. A pharmacy sits 0.35 mi from the entrance (Central Pharmacy), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.39 mi away.
Getting here and what is nearby
Parking 302 ft ~2 min
Parking 405 ft ~2 min
Transit Cambridge St @ Saunders St 692 ft ~3 min
Convenience Father & Son Market 700 ft ~3 min
1437 Commonwealth Avenue
Restaurant Sammy's Pizza & Fried Chicken 693 ft ~3 min
Transit Cambridge St @ Gordon St 871 ft ~4 min
Restaurant Rock City Pizza 921 ft ~4 min
568 Cambridge Street, 02134
Su-Th 11:00-23:00; Fr-Sa 11:00-03:00
Grocery Cheema's Super Market 950 ft ~4 min
Restaurant NakSan BBQ 1,022 ft ~4 min
1414 Commonwealth Avenue
Convenience Allston Convenience Store 0.26 mi ~6 min
165 Allston Street
Convenience Lee's 2 Market 0.26 mi ~6 min
1383 Commonwealth Avenue
Parking 0.28 mi ~6 min
45 Nevins Street
Transit Cambridge St @ N Beacon St 0.31 mi ~7 min
6 Barrows Street, Allston 02134
Coffee Twin Donuts 0.32 mi ~7 min
Pharmacy Central Pharmacy 0.35 mi ~7 min
Coffee Coffee Turco 0.36 mi ~8 min
Coffee Dash Cafe 0.39 mi ~8 min
Gas station Mobil 0.39 mi ~8 min
Grocery Stop & Shop 0.40 mi ~9 min
305 Guest Street, Boston 02135
Mo-Sa 07:00-22:00; Su 07:00-21:00
Gas station Irving 0.47 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 |
|---|---|---|
| LCSW229768 | MA | Clinical Social Worker primary |
This provider holds licence LCSW229768 issued in MA. 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 | 1003599101 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Aug 8, 2023 |
| Last updated | Apr 5, 2024 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | LCSW |
| Practice address |
30 WARREN ST Brighton, MA 02135 (617) 955-1564 |
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 | 5 | 9 | 9 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 1 | 9 | 9 | 1 | 0 |
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.