Quick answers
- Does Tonja S. Petersen Anderson accept Medicare assignment?
- Yes. Medicare's clinician data says Tonja S. Petersen Anderson 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 Tonja S. Petersen Anderson's NPI number?
- 1487626719. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Tonja S. Petersen Anderson works
Medicare's Facility Affiliation Data lists Tonja S. Petersen Anderson 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.
- Pocahontas Community HospitalPocahontas, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161305
- Stewart Memorial Community HospitalLake City, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161350
- Trinity Regional Medical CenterFort Dodge, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160016
Practice locations
Addresses where Tonja S. Petersen Anderson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1301 W Main StLake City, IA 51449 (712) 464‑3171
Group practices
Medicare enrollment lists Tonja S. Petersen Anderson as a member of this group (CMS data updated October 2, 2026).
- Stewart Memorial Community Hospital37 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Lake City
Clinicians with the same Medicare primary specialty in Lake City, IA — not a recommendation.
Other clinicians in Stewart Memorial Community Hospital
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 1997 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1487626719 |
| 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