Quick answers
- Which hospitals does Aaron Karo work at?
- Medicare's official clinician data lists Aaron Karo at 5 hospitals: Crossing Rivers Health Medical Center, Gundersen Lutheran Medical Center, Gundersen Tri-County Hospital & Clinics, Veterans Memorial Hospital and Winona Health Services. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Aaron Karo see patients?
- Medicare's clinician data lists 8 practice locations, including Winona, MN, Onalaska, WI and La Crosse, WI. Call before your visit to confirm the address.
- What is Aaron Karo's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Aaron Karo accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron Karo 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 Aaron Karo?
- (507) 615-0600, as listed in official Medicare / NPI Registry data.
- What is Aaron Karo's NPI number?
- 1669087763. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Aaron Karo works
Medicare's Facility Affiliation Data lists Aaron Karo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Crossing Rivers Health Medical CenterPrairie Du Chien, WI · Critical Access Hospital · CCN 521330
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · CCN 520087
- Gundersen Tri-County Hospital & ClinicsWhitehall, WI · Critical Access Hospital · CCN 521316
- Veterans Memorial HospitalWaukon, IA · Critical Access Hospital · CCN 161318
- Winona Health ServicesWinona, MN · Acute Care Hospital · CCN 240044
Practice locations
Addresses where Aaron Karo is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 1122 W Hwy 61Winona, MN 55987 (507) 615‑0600
- 1600 Main StOnalaska, WI 54650 (608) 783‑4681
- 1836 S AveLa Crosse, WI 54601
- 1910 S AveLa Crosse, WI 54601 (608) 782‑7300
- 2575 S 7th St, Bethany RiversideLa Crosse, WI 54601 (608) 775‑8200
Group practices
Medicare enrollment lists Aaron Karo as a member of these groups (CMS data updated 2026-10-02).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
- Gundersen Clinic Ltd418 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Winona
Clinicians with the same Medicare primary specialty in Winona, MN — not a recommendation.
Clinician information
| Graduation year | 2022 |
|---|---|
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669087763 |
| 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