Quick answers
- Which hospitals does Katie Geiser work at?
- Medicare's official clinician data lists Katie Geiser at 5 hospitals: Ascension Calumet Hospital, Ascension NE Wisconsin - St Elizabeth Campus, Thedacare Medical Center - Berlin Inc, Thedacare Regional Med Ctr - Neenah and Thedacare Regional Medical Center - Appleton Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Katie Geiser see patients?
- Medicare's clinician data lists 1 practice location in Appleton, WI. Call before your visit to confirm the address.
- What is Katie Geiser's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Katie Geiser accept Medicare assignment?
- Yes. Medicare's clinician data says Katie Geiser accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Katie Geiser?
- (920) 738-2000, as listed in official Medicare / NPI Registry data.
- What is Katie Geiser's NPI number?
- 1013648591. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Katie Geiser works
Medicare's Facility Affiliation Data lists Katie Geiser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ascension Calumet HospitalChilton, WI · Critical Access Hospital · CCN 521317
- Ascension NE Wisconsin - St Elizabeth CampusAppleton, WI · Acute Care Hospital · CCN 520009
- Thedacare Medical Center - Berlin IncBerlin, WI · Critical Access Hospital · CCN 521355
- Thedacare Regional Med Ctr - NeenahNeenah, WI · Acute Care Hospital · CCN 520045
- Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute Care Hospital · CCN 520160
Practice locations
Addresses where Katie Geiser is enrolled with Medicare (CMS data updated 2026-10-02).
- 1506 S Oneida StAppleton, WI 54915 (920) 738‑2000
Group practices
Medicare enrollment lists Katie Geiser as a member of this group (CMS data updated 2026-10-02).
- Ascension Medical Group-Fox Valley Wisconsin, Inc259 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Appleton
Clinicians with the same Medicare primary specialty in Appleton, WI — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1013648591 |
| 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 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- 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