Quick answers
- Which hospitals does William J. Andrews work at?
- Medicare's official clinician data lists William J. Andrews at 5 hospitals: Avera Creighton Hospital, Avera McKennan Hospital & University Health Center, Avera Sacred Heart Hospital, Avera St Anthony's Hospital and St Michael's Hospital - CAH. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Andrews see patients?
- Medicare's clinician data lists 4 practice locations, including Sioux Falls, SD and Yankton, SD. Call before your visit to confirm the address.
- What is William J. Andrews's specialty?
- Medicare lists Neurology as the primary specialty.
- Does William J. Andrews accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Andrews 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 William J. Andrews?
- (605) 322-8860, as listed in official Medicare / NPI Registry data.
- What is William J. Andrews's NPI number?
- 1649487588. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William J. Andrews works
Medicare's Facility Affiliation Data lists William J. Andrews at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Avera Creighton HospitalCreighton, NE · Critical Access Hospital · CCN 281331
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · CCN 430016
- Avera Sacred Heart HospitalYankton, SD · Acute Care Hospital · CCN 430012
- Avera St Anthony's HospitalO' Neill, NE · Critical Access Hospital · CCN 281329
- St Michael's Hospital - CAHTyndall, SD · Critical Access Hospital · CCN 431327
Practice locations
Addresses where William J. Andrews is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 S Cliff AveSioux Falls, SD 57105
- 1301 S Cliff Ave, Suite 610Sioux Falls, SD 57105 (605) 322‑8860
- 2525 Fox Run Pkwy, Suite 204Yankton, SD 57078 (605) 665‑1070
- 501 Summit StYankton, SD 57078 (605) 668‑8000
Group practices
Medicare enrollment lists William J. Andrews as a member of this group (CMS data updated 2026-10-02).
- Avera McKennan959 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Nebraska College Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649487588 |
| 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