Quick answers
- Which hospitals does Haley Ellis work at?
- Medicare's official clinician data lists Haley Ellis at 5 hospitals: Coteau Des Prairies Health Care System, Milbank Area Hospital/Avera Health, Ortonville Area Health Services, Prairie Lakes Healthcare System, Inc and Sanford Hospital Webster - CAH. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Haley Ellis see patients?
- Medicare's clinician data lists 1 practice location in Watertown, SD. Call before your visit to confirm the address.
- What is Haley Ellis's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Haley Ellis accept Medicare assignment?
- Yes. Medicare's clinician data says Haley Ellis 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 Haley Ellis?
- (605) 882-7000, as listed in official Medicare / NPI Registry data.
- What is Haley Ellis's NPI number?
- 1306485172. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Haley Ellis works
Medicare's Facility Affiliation Data lists Haley Ellis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Coteau Des Prairies Health Care SystemSisseton, SD · Critical Access Hospital · CCN 431339
- Milbank Area Hospital/Avera HealthMilbank, SD · Critical Access Hospital · CCN 431326
- Ortonville Area Health ServicesOrtonville, MN · Critical Access Hospital · CCN 241342
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · CCN 430005
- Sanford Hospital Webster - CAHWebster, SD · Critical Access Hospital · CCN 431311
Practice locations
Addresses where Haley Ellis is enrolled with Medicare (CMS data updated 2026-10-02).
- 401 9th Ave NWWatertown, SD 57201 (605) 882‑7000
Group practices
Medicare enrollment lists Haley Ellis as a member of this group (CMS data updated 2026-10-02).
- Prairie Lakes Health Care System Inc109 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Watertown
Clinicians with the same Medicare primary specialty in Watertown, SD — not a recommendation.
Clinician information
| Graduation year | 2019 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306485172 |
| 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