William Walker, MA, NCC, LCPC
William Walker, MA, NCC, LCPC is a Mental Health Counselor in Columbia Falls, MT, registered under NPI 1003266651.
Getting there
Here is what surrounds this office in Columbia Falls, based on OpenStreetMap data collected Sep 15, 2026. Parking is available about 0.40 mi away. A pharmacy sits 0.34 mi from the entrance (Smith's), which helps if you leave with a prescription.
Getting here and what is nearby
Parking 0.20 mi ~5 min
Pharmacy Smith's 0.34 mi ~7 min
419 Nucleus Avenue, Columbia Falls 59912
Mo-Su 06:00-24:00
Parking 0.35 mi ~8 min
Parking 0.40 mi ~9 min
Restaurant North Fork Pizza 0.44 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 |
|---|---|---|
| 17585 | MT | Mental Health Counselor primary |
This provider holds licence 17585 issued in MT. 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 | 1003266651 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 14, 2016 |
| Last updated | Jun 14, 2016 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | MA, NCC, LCPC |
| Practice address |
270 3RD AVENUE EAST N Columbia Falls, MT 59912 (406) 471-0450 |
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 | 2 | 6 | 6 | 6 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 6 | 3 | 6 | 1 |
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.