Quick answers
- Which hospitals does Fredrik Jenssen work at?
- Medicare's official clinician data lists Fredrik Jenssen at 3 hospitals: Thedacare Medical Center-Waupaca, Thedacare Regional Medical Center - Appleton Inc and Thedacare Regional Medical Center - Neenah. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Fredrik Jenssen see patients?
- Medicare's clinician data lists 1 practice location in Berlin, WI. Call before your visit to confirm the address.
- What is Fredrik Jenssen's specialty?
- Medicare lists Critical Care (Intensivists) as the primary specialty.
- Does Fredrik Jenssen accept Medicare assignment?
- Yes. Medicare's clinician data says Fredrik Jenssen 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 Fredrik Jenssen?
- (920) 720-2300, as listed in official Medicare / NPI Registry data.
- What is Fredrik Jenssen's NPI number?
- 1881007656. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Fredrik Jenssen works
Medicare's Facility Affiliation Data lists Fredrik Jenssen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Thedacare Medical Center-WaupacaWaupaca, WI · Critical Access Hospital · CCN 521334
- Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute Care Hospital · CCN 520160
- Thedacare Regional Medical Center - NeenahNeenah, WI · Acute Care Hospital · CCN 520045
Practice locations
Addresses where Fredrik Jenssen is enrolled with Medicare (CMS data updated 2026-10-02).
- 225 Memorial DrBerlin, WI 54923 (920) 720‑2300
Group practices
Medicare enrollment lists Fredrik Jenssen as a member of this group (CMS data updated 2026-10-02).
- Thedacare, Incorporated647 clinicians in the group
Specialties
- Critical Care (Intensivists)primary
Find other Critical Care (Intensivists) doctors in Wisconsin →
Other critical care doctors in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2014 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1881007656 |
| 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