Quick answers
- Does Kathryn K. Riordan accept Medicare assignment?
- Yes. Medicare's clinician data says Kathryn K. Riordan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Kathryn K. Riordan's NPI number?
- 1669453726. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kathryn K. Riordan works
Medicare's Facility Affiliation Data lists Kathryn K. Riordan at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Lakewood Health SystemStaples, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241329
- Prairie Ridge Hospital and Health ServicesElbow Lake, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241379
Practice locations
Addresses where Kathryn K. Riordan is enrolled with Medicare (CMS data updated October 2, 2026).
- 49725 County, Suite 83Staples, MN 56479 (218) 894‑1515
Group practices
Medicare enrollment lists Kathryn K. Riordan as a member of this group (CMS data updated October 2, 2026).
- Lakewood Health System105 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Minnesota
Clinicians with the same Medicare primary specialty in Minnesota — not a recommendation.
Other clinicians in Lakewood Health System
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Uniformed Services Uhs Fe Hebert School Of Med |
| Graduation year | 1983 (43 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669453726 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians