Quick answers
- Does Colleen B. Byrnes accept Medicare assignment?
- Yes. Medicare's clinician data says Colleen B. Byrnes 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 Colleen B. Byrnes's NPI number?
- 1942286422. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Colleen B. Byrnes works
Medicare's Facility Affiliation Data lists Colleen B. Byrnes 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.
- Floyd County Medical CenterCharles City, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 161347
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160064
- Mitchell County Regional HealthOsage, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 161323
Practice locations
Addresses where Colleen B. Byrnes is enrolled with Medicare (CMS data updated October 2, 2026).
- 616 N 8th StOsage, IA 50461 (641) 732‑6000
- 620 N 8th StOsage, IA 50461 (641) 732‑6100
Group practices
Medicare enrollment lists Colleen B. Byrnes as a member of this group (CMS data updated October 2, 2026).
- Mitchell County Memorial Hospital26 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Osage
Clinicians with the same Medicare primary specialty in Osage, IA — not a recommendation.
Other clinicians in Mitchell County Memorial Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2002 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942286422 |
| 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