Quick answers
- Does Andrea Karns accept Medicare assignment?
- Medicare's clinician data says Andrea Karns may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Andrea Karns's NPI number?
- 1578364980. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Andrea Karns works
Medicare's Facility Affiliation Data lists Andrea Karns 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.
- Allen HospitalWaterloo, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160110
- Grundy County Memorial HospitalGrundy Center, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161303
- Waverly Health CenterWaverly, IA · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 161339
Practice locations
Addresses where Andrea Karns is enrolled with Medicare (CMS data updated October 2, 2026).
- 1825 Logan AveWaterloo, IA 50703
- 2413 W Ridgeway Ave, Uph Waterloo NeurosurgeryWaterloo, IA 50701 (319) 226‑9888
Group practices
Medicare enrollment lists Andrea Karns as a member of this group (CMS data updated October 2, 2026).
- Allen Memorial Hospital Corporation157 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Waterloo
Clinicians with the same Medicare primary specialty in Waterloo, IA — not a recommendation.
Other clinicians in Allen Memorial Hospital Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2025 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1578364980 |
| 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