Quick answers
- Which hospitals does Liza Ystaas work at?
- Medicare's official clinician data lists Liza Ystaas at 3 hospitals: Carrington Health Center, Cooperstown Medical Center and McKenzie County Healthcare Systems Inc. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Liza Ystaas see patients?
- Medicare's clinician data lists 6 practice locations, including Cooperstown, ND, Lakota, ND and Williston, ND. Call before your visit to confirm the address.
- What is Liza Ystaas's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Liza Ystaas accept Medicare assignment?
- Yes. Medicare's clinician data says Liza Ystaas 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 Liza Ystaas?
- (701) 786-1700, as listed in official Medicare / NPI Registry data.
- What is Liza Ystaas's NPI number?
- 1124646146. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Liza Ystaas works
Medicare's Facility Affiliation Data lists Liza Ystaas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Carrington Health CenterCarrington, ND · Critical Access Hospital · CCN 351318
- Cooperstown Medical CenterCooperstown, ND · Critical Access Hospital · CCN 351306
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · CCN 351302
Practice locations
Addresses where Liza Ystaas is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 107 12th St SCooperstown, ND 58425 (701) 786‑1700
- 117 2nd St WLakota, ND 58344 (701) 247‑2227
- 1200 Roberts Ave NECooperstown, ND 58425 (701) 797‑2128
- 1542 16th St W, Suite 300Williston, ND 58801 (701) 577‑6337
- 509 16th St NE, Suite 3Watford City, ND 58854 (701) 444‑7814
Group practices
Medicare enrollment lists Liza Ystaas as a member of these groups (CMS data updated 2026-10-02).
- McKenzie County Healthcare Systems Inc66 clinicians in the group
- Cooperstown Medical Center13 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Cooperstown
Clinicians with the same Medicare primary specialty in Cooperstown, ND — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Medical school | University Of North Dakota School Of Medicine |
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124646146 |
| 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