Elizabeth Obrien, LMHC
Elizabeth Obrien, LMHC is a Mental Health Counselor in Arlington, MA, registered under NPI 1003439092. 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 Arlington, based on OpenStreetMap data collected Sep 26, 2026. Parking is available about 717 ft away. The nearest transit stop is 793 ft away, served by Massachusetts Ave @ Daniels St. If you arrive early, there is a coffee shop 0.36 mi away.
Getting here and what is nearby
Transit Massachusetts Ave @ Appleton St 470 ft ~2 min
Transit Massachusetts Ave opp Appleton St 485 ft ~2 min
Parking 600 ft ~3 min
Restaurant Dunkin' 570 ft ~3 min
1234 Massachusetts Avenue, Arlington 02476
Parking 608 ft ~3 min
Restaurant Master Pies Pizza 662 ft ~3 min
1181 Massachusetts Avenue, Arlington 02476
Parking 717 ft ~3 min
Transit Massachusetts Ave @ Daniels St 793 ft ~4 min
Restaurant Sono Asian Cuisine 0.21 mi ~5 min
Gas station Sunoco 0.25 mi ~6 min
Convenience Peter Pan Superette 0.27 mi ~6 min
3 Park Avenue, Arlington 02476
Gas station Mobil 0.29 mi ~6 min
1116 Massachusetts Avenue, Arlington 02476
Gas station Citgo 0.29 mi ~6 min
19 Park Avenue, Arlington 02476
Coffee The Roasted Granola Café 0.36 mi ~8 min
1346 Massachusetts Avenue, Arlington 02476
Tu-Fr 07:00-16:00; Sa-Su 07:00-12:00
Convenience Arlington Heights Convenience Store 0.37 mi ~8 min
1348 Massachusetts Avenue, Arlington 02476
Grocery Maruichi Japanese Food and Deli 0.44 mi ~9 min
1398 Massachusetts Avenue, Arlington 02476
Mo-Su 10:00-19:00
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 |
|---|---|---|
| 7988 | MA | Mental Health Counselor primary |
This provider holds licence 7988 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 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 | 1003439092 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 25, 2020 |
| Last updated | May 25, 2020 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | LMHC |
| Practice address |
24 CLARK ST Arlington, MA 02476 (617) 818-4552 |
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 | 4 | 3 | 9 | 0 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 3 | 9 | 0 | 9 |
Sum = 58 · next multiple of 10 = 60 · 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.