Quick answers
- Does Kristi G. Hammersley accept Medicare assignment?
- Yes. Medicare's clinician data says Kristi G. Hammersley accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Kristi G. Hammersley's NPI number?
- 1265286421. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kristi G. Hammersley works
Medicare's Facility Affiliation Data lists Kristi G. Hammersley at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Crook County HospitalSundance, WY · Critical Access Hospital · Emergency services: listed by Medicare · CCN 531311
- Monument Health Spearfish HospitalSpearfish, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430048
Practice locations
Addresses where Kristi G. Hammersley is enrolled with Medicare (CMS data updated October 2, 2026).
- 1420 N 10th StSpearfish, SD 57783 (605) 717‑8595
- 208 N Big Horn AveMoorcroft, WY 82721
- 713 E Oak StSundance, WY 82729
- 713 Oak StSundance, WY 82729
- PO Box, Suite 517Sundance, WY 82729
Group practices
Medicare enrollment lists Kristi G. Hammersley as a member of these groups (CMS data updated October 2, 2026).
- Monument Health Network Inc160 clinicians in the group
- Crook County Medical Services District14 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Spearfish
Clinicians with the same Medicare primary specialty in Spearfish, SD — not a recommendation.
Other clinicians in Monument Health Network Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265286421 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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