Quick answers
- Which hospitals does Thomas A. Viereck work at?
- Medicare's official clinician data lists Thomas A. Viereck at 3 hospitals: Avera Sacred Heart Hospital, Sanford Vermillion Medical Center and St Michael's Hospital - CAH. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas A. Viereck see patients?
- Medicare's clinician data lists 1 practice location in Yankton, SD. Call before your visit to confirm the address.
- What is Thomas A. Viereck's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Thomas A. Viereck accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas A. Viereck 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 Thomas A. Viereck?
- (605) 665-7841, as listed in official Medicare / NPI Registry data.
- What is Thomas A. Viereck's NPI number?
- 1518526599. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas A. Viereck works
Medicare's Facility Affiliation Data lists Thomas A. Viereck at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera Sacred Heart HospitalYankton, SD · Acute Care Hospital · CCN 430012
- Sanford Vermillion Medical CenterVermillion, SD · Critical Access Hospital · CCN 431336
- St Michael's Hospital - CAHTyndall, SD · Critical Access Hospital · CCN 431327
Practice locations
Addresses where Thomas A. Viereck is enrolled with Medicare (CMS data updated 2026-10-02).
- 1104 W 8th StYankton, SD 57078 (605) 665‑7841
Group practices
Medicare enrollment lists Thomas A. Viereck as a member of these groups (CMS data updated 2026-10-02).
- Sacred Heart Health Services153 clinicians in the group
- Yankton Medical Clinic PC59 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Yankton
Clinicians with the same Medicare primary specialty in Yankton, SD — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518526599 |
| 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