Tonja Erickson, L.C.P.C
Tonja Erickson, L.C.P.C is a Professional Counselor in Hamilton, MT, registered under NPI 1003128331. 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 Hamilton, based on OpenStreetMap data collected Sep 7, 2026. Parking is available about 231 ft away. There is EV charging 0.21 mi from the office (Hamilton City Hall Charging Station) — useful if you are driving in from out of town. A pharmacy sits 712 ft from the entrance (Bitterroot Drug), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.26 mi away.
Getting here and what is nearby
Parking 66 ft ~1 min
Parking 193 ft ~1 min
Parking 231 ft ~1 min
Hotel City Center Motel 426 ft ~2 min
Restaurant River Rising 422 ft ~2 min
337 W Main St
Coffee Big Creek Coffee Roasters 548 ft ~3 min
301 West Main Street, Hamilton 59840
Mo-Fr 07:00-18:00; Sa-Su 07:00-16:00
Restaurant Back Door Deli 592 ft ~3 min
105 South 3rd Street, Hamilton 59840
Coffee Brew X Coffee Roasting 697 ft ~3 min
Pharmacy Bitterroot Drug 712 ft ~3 min
211 West Main Street, Hamilton 59840
Restaurant Maria's 675 ft ~3 min
Grocery Gianvito's Italian Market 0.20 mi ~4 min
EV charging Hamilton City Hall Charging Station 0.21 mi ~5 min
Coffee Montana Made Coffee 0.26 mi ~6 min
Grocery Paddy Elephant Asian Market 0.26 mi ~6 min
Grocery Safeway 0.28 mi ~6 min
101 East Main Street, Hamilton 59840
Mo-Su 07:00-22:00
Hotel Deffy's Motel 0.32 mi ~7 min
321 South 1st Street, Hamilton 59840
Hotel Stay Express Inn Hamilton 0.37 mi ~8 min
Gas station Sinclair 0.40 mi ~9 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 |
|---|---|---|
| 1499 | MT | Professional Counselor primary |
This provider holds licence 1499 issued in MT. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Mental Health Counselor
- PAC ID
- 7618445792
- Enrollment ID
- I20260506003919
Medicare enrolment is recorded as approved under the provider type Practitioner - Mental Health Counselor. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Professional covers
Definition to come... NUCC Health Care Provider Taxonomy, code 101YP2500X
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 | 1003128331 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jul 1, 2010 |
| Last updated | Jul 1, 2010 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Credential | L.C.P.C |
| Practice address |
109 N 4TH ST Hamilton, MT 59840 (406) 369-5268 |
| Mailing address |
PO BOX 692 Corvallis, MT 59828 |
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 | 1 | 2 | 8 | 3 | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 2 | 2 | 7 | 3 | 6 |
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.