Quick answers
- Does Kristen S. Fournier accept Medicare assignment?
- Yes. Medicare's clinician data says Kristen S. Fournier 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 Kristen S. Fournier's NPI number?
- 1023983830. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Kristen S. Fournier works
Medicare's Facility Affiliation Data lists Kristen S. Fournier 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.
- Adventist Health SonoraSonora, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: not listed by Medicare · CCN 050335
- John C Fremont Healthcare DistrictMariposa, CA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 051304
- Mercy Medical CenterMerced, CA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 050444
Practice locations
Addresses where Kristen S. Fournier is enrolled with Medicare (CMS data updated October 2, 2026).
- 5186 Hospital RdMariposa, CA 95338 (209) 966‑3631
- 5189 Hospital RdMariposa, CA 95338 (209) 966‑3631
- 6386 Greeley Hill RdCoulterville, CA 95311 (209) 966‑3631
Group practices
Medicare enrollment lists Kristen S. Fournier as a member of this group (CMS data updated October 2, 2026).
- John C Fremont Healthcare District18 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Mariposa
Clinicians with the same Medicare primary specialty in Mariposa, CA — not a recommendation.
Other clinicians in John C Fremont Healthcare District
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2025 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1023983830 |
| 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