MAYO CLINIC HEALTH SYSTEM-SOUTHWEST WISCONSIN REGION, INC.
MAYO CLINIC HEALTH SYSTEM-SOUTHWEST WISCONSIN REGION, INC. is an organization registered with the National Plan and Provider Enumeration System (NPPES) under NPI 1003453119, based in Prairie Du Chien, WI. It is classified under Rural Health Clinic/Center.
Getting there
The practice address on file is 800 E BLACKHAWK AVE, Prairie Du Chien, WI 53821. 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
NPPES does not list a state licence number for this record. That is not unusual — organizations and some provider types are not required to file one. Verify current licensure with the relevant state board before care.
- Status
- Approved
- Provider type
- Part A Provider - Rural Health Clinic
- PAC ID
- 0345152443
Medicare enrolment is recorded as approved under the provider type Part A Provider - Rural Health Clinic. 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 Rural Health covers
Definition to come... NUCC Health Care Provider Taxonomy, code 261QR1300X
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-2 identifies an organization — a clinic, hospital, group practice, laboratory, or supplier. Individual clinicians working there hold their own NPI-1 numbers separately, so a bill may reference both.
| NPI | 1003453119 valid check digit |
|---|---|
| Entity type | Organization (NPI-2) |
| Enumeration date | Dec 9, 2019 |
| Last updated | Feb 25, 2026 |
| Status | Active |
| Practice address |
800 E BLACKHAWK AVE Prairie Du Chien, WI 53821 (608) 326-0808 |
| Mailing address |
PO BOX 860056 Minneapolis, MN 55486 |
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 | 5 | 3 | 1 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 8 | 5 | 6 | 1 | 2 |
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.