Timothy Johnson, DDS
Timothy Johnson, DDS is a provider specialising in Dentist in Polson, MT, registered under NPI 1003300989.
Getting there
Here is what surrounds this office in Polson, based on OpenStreetMap data collected Sep 17, 2026. Parking is available about 384 ft away.
Getting here and what is nearby
Gas station Conoco 149 ft ~1 min
Parking 239 ft ~1 min
Parking 258 ft ~1 min
Parking 384 ft ~2 min
Restaurant Domino's 599 ft ~3 min
318 Main Street, Polson 59860
Mo-Th 10:30-24:00; Fr-Sa 10:30-01:00; Su 10:30-24:00
Restaurant Cherries BBQ Pit 805 ft ~4 min
105 2nd Street East, Polson 59860
Hotel KwaTaqNuk Resort 0.26 mi ~6 min
Hotel Port Polson Inn 0.36 mi ~8 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 |
|---|---|---|
| DEN-DEN-LIC-15423 | MT | Dentist primary |
This provider holds licence DEN-DEN-LIC-15423 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 Dentist covers
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist. NUCC Health Care Provider Taxonomy, code 122300000X
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 | 1003300989 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Jun 14, 2018 |
| Last updated | Jan 21, 2021 |
| Status | Active |
| Sole proprietor | No |
| Gender | Male |
| Credential | DDS |
| Practice address |
203 MAIN ST Polson, MT 59860 (406) 883-0496 |
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 | 3 | 0 | 0 | 9 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 6 | 0 | 0 | 9 | 7 |
Sum = 51 · next multiple of 10 = 60 · check digit = 9 · actual last digit = 9
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.