Quick answers
- Which hospitals does Eric A. Johnson work at?
- Medicare's official clinician data lists Eric A. Johnson at 5 hospitals: Aspirus Ironwood Hospital, Aspirus Rhinelander Hospital, Aspirus Wausau Hospital, Howard Young Medical Center and Up Health System Portage. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eric A. Johnson see patients?
- Medicare's clinician data lists 1 practice location in Wausau, WI. Call before your visit to confirm the address.
- What is Eric A. Johnson's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Geriatric Medicine and Internal Medicine.
- Does Eric A. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Eric A. Johnson 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.
- Does Eric A. Johnson offer telehealth?
- Medicare's clinician data says Eric A. Johnson offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Eric A. Johnson?
- (715) 847-2558, as listed in official Medicare / NPI Registry data.
- What is Eric A. Johnson's NPI number?
- 1245276534. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eric A. Johnson works
Medicare's Facility Affiliation Data lists Eric A. Johnson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Aspirus Ironwood HospitalIronwood, MI · Critical Access Hospital · CCN 231333
- Aspirus Rhinelander HospitalRhinelander, WI · Acute Care Hospital · CCN 520019
- Aspirus Wausau HospitalWausau, WI · Acute Care Hospital · CCN 520030
- Howard Young Medical CenterWoodruff, WI · Acute Care Hospital · CCN 520091
- Up Health System PortageHancock, MI · Acute Care Hospital · CCN 230108
Practice locations
Addresses where Eric A. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 411 Westwood DrWausau, WI 54401 (715) 847‑2558
Group practices
Medicare enrollment lists Eric A. Johnson as a member of this group (CMS data updated 2026-10-02).
- Gastrointestinal Associates S.C.42 clinicians in the group
Specialties
- Gastroenterologyprimary
- Geriatric Medicinealso
- Internal Medicinealso
Other gastroenterologists in Wausau
Clinicians with the same Medicare primary specialty in Wausau, WI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1245276534 |
| 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