Ruth Schaefer
Ruth Schaefer is a provider specialising in Audiologist-Hearing Aid Fitter in Willmar, MN, registered under NPI 1700968948. This provider registers 2 separate taxonomy codes, which usually means they practise across more than one recognised specialty.
Getting there
The practice address on file is 1801 19TH AVE SW, Willmar, MN 56201. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 5500 | MN | Audiologist-Hearing Aid Fitter primary |
| 5500 | MN | Audiologist |
This provider holds licence 5500 issued in MN. 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 - Qualified Audiologist
- PAC ID
- 5597679266
Medicare enrolment is recorded as approved under the provider type Practitioner - Qualified Audiologist. This means the provider is enrolled to bill Medicare, though it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Audiologist-Hearing Aid Fitter covers
An audiologist/hearing aid fitter is the professional who specializes in evaluating and treating people with hearing loss, conducts a wide variety of tests to determine the exact nature of an individual's hearing problem, presents a variety of treatment options to patients, dispenses and fits hearing aids, administers tests of balance to evaluate dizziness and provides hearing rehabilitation training. This classification should be used where individuals are licensed as "audiologist-hearing aid fitters" as opposed to states that license individuals as "audiologists". NUCC Health Care Provider Taxonomy, code 237600000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 237600000X | Audiologist-Hearing Aid Fitter | 5500 | MN | primary |
| 231H00000X | Audiologist | 5500 | MN |
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 | 1700968948 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Oct 19, 2006 |
| Last updated | Sep 11, 2025 |
| Status | Active |
| Sole proprietor | No |
| Practice address |
1801 19TH AVE SW Willmar, MN 56201 (320) 214-7256 Fax (320) 214-7866 |
| Other identifiers |
HP34524
· HEALTH PARTNERS 4500121 · MEDICA PRIMARY 7G479SC · BLUE CROSS BLUE SHIELD 4500623 · MEDICA CHOICE (MN) |
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 | 7 | 0 | 0 | 9 | 6 | 8 | 9 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 7 | 0 | 0 | 9 | 6 | 7 | 9 | 8 |
Sum = 72 · next multiple of 10 = 80 · check digit = 8 · actual last digit = 8
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.