Quick answers
- Which hospitals does Timothy A. Mikesell work at?
- Medicare's official clinician data lists Timothy A. Mikesell at 5 hospitals: Avera Gregory Hospital, Avera Sacred Heart Hospital, Avera St Anthony's Hospital, Floyd Valley Healthcare and Wagner Community Memorial Hospital - CAH. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Timothy A. Mikesell see patients?
- Medicare's clinician data lists 5 practice locations, including Yankton, SD, O'Neill, NE and Oneill, NE. Call before your visit to confirm the address.
- What is Timothy A. Mikesell's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Timothy A. Mikesell accept Medicare assignment?
- Yes. Medicare's clinician data says Timothy A. Mikesell 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 Timothy A. Mikesell?
- (402) 336-2611, as listed in official Medicare / NPI Registry data.
- What is Timothy A. Mikesell's NPI number?
- 1669811220. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Timothy A. Mikesell works
Medicare's Facility Affiliation Data lists Timothy A. Mikesell at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera Gregory HospitalGregory, SD · Critical Access Hospital · CCN 431338
- Avera Sacred Heart HospitalYankton, SD · Acute Care Hospital · CCN 430012
- Avera St Anthony's HospitalO' Neill, NE · Critical Access Hospital · CCN 281329
- Floyd Valley HealthcareLe Mars, IA · Critical Access Hospital · CCN 161368
- Wagner Community Memorial Hospital - CAHWagner, SD · Critical Access Hospital · CCN 431315
Practice locations
Addresses where Timothy A. Mikesell is enrolled with Medicare (CMS data updated 2026-10-02).
- 1000 W 4th St, Suite 8Yankton, SD 57078
- 300 N 2nd StO'Neill, NE 68763
- 300 N 2nd St, Avera Behavioral Health YanktonOneill, NE 68763 (402) 336‑2611
- 405 W Darlene St, Avera Behavioral Health YanktonHartington, NE 68739 (402) 254‑3935
- 501 Summit StYankton, SD 57078
Group practices
Medicare enrollment lists Timothy A. Mikesell as a member of this group (CMS data updated 2026-10-02).
- Sacred Heart Health Services153 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Yankton
Clinicians with the same Medicare primary specialty in Yankton, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Southern Illinois University School Of Medicine |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1669811220 |
| 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