Quick answers
- Which hospitals does Theophilus B. Bortier work at?
- Medicare's official clinician data lists Theophilus B. Bortier at 1 hospital: Avera Sacred Heart Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Theophilus B. Bortier see patients?
- Medicare's clinician data lists 2 practice locations, including Yankton, SD. Call before your visit to confirm the address.
- What is Theophilus B. Bortier's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Theophilus B. Bortier accept Medicare assignment?
- Yes. Medicare's clinician data says Theophilus B. Bortier 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 Theophilus B. Bortier's NPI number?
- 1861141939. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Theophilus B. Bortier works
Medicare's Facility Affiliation Data lists Theophilus B. Bortier 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
Practice locations
Addresses where Theophilus B. Bortier is enrolled with Medicare (CMS data updated 2026-10-02).
Group practices
Medicare enrollment lists Theophilus B. Bortier as a member of this group (CMS data updated 2026-10-02).
- Sacred Heart Health Services153 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Yankton
Clinicians with the same Medicare primary specialty in Yankton, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861141939 |
| 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