Quick answers
- Which hospitals does Erin K. Eferem work at?
- Medicare's official clinician data lists Erin K. Eferem at 2 hospitals: Thedacare Medical Center - Berlin Inc and Thedacare Regional Medical Center - Appleton Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Erin K. Eferem see patients?
- Medicare's clinician data lists 1 practice location in Oshkosh, WI. Call before your visit to confirm the address.
- What is Erin K. Eferem's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Erin K. Eferem accept Medicare assignment?
- Yes. Medicare's clinician data says Erin K. Eferem 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 Erin K. Eferem?
- (920) 651-8000, as listed in official Medicare / NPI Registry data.
- What is Erin K. Eferem's NPI number?
- 1700106796. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Erin K. Eferem works
Medicare's Facility Affiliation Data lists Erin K. Eferem 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 - Berlin IncBerlin, WI · Critical Access Hospital · CCN 521355
- Thedacare Regional Medical Center - Appleton IncAppleton, WI · Acute Care Hospital · CCN 520160
Practice locations
Addresses where Erin K. Eferem is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 W 6th AveOshkosh, WI 54902 (920) 651‑8000
Group practices
Medicare enrollment lists Erin K. Eferem as a member of this group (CMS data updated 2026-10-02).
- Thedacare Regional Medical Center - Appleton, Inc14 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Oshkosh
Clinicians with the same Medicare primary specialty in Oshkosh, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1700106796 |
| 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