Quick answers
- Does Anna C. Toomsen accept Medicare assignment?
- Yes. Medicare's clinician data says Anna C. Toomsen 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.
- How many Medicare patients does Anna C. Toomsen see?
- In 2024, CMS data shows 224 Original Medicare patients and 1,095 services for Anna C. Toomsen. This counts Original Medicare only and measures volume, not quality.
- What is Anna C. Toomsen's NPI number?
- 1619326543. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Anna C. Toomsen, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 224 |
|---|---|
| Services billed to Medicare | 1,095 |
| Different services or procedures | 22 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)454 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)163 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)140 services
- Anticoagulant management of patient taking warfarin (93793)129 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)126 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol75%
- Arthritis34%
- Ischemic heart disease23%
- Diabetes21%
- Depression21%
Hospitals where Anna C. Toomsen works
Medicare's Facility Affiliation Data lists Anna C. Toomsen 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.
- Franklin General HospitalHampton, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161308
- MercyOne Des Moines Medical CenterDes Moines, IA · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 160083
- MercyOne North Iowa Medical CenterMason City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160064
Practice locations
Addresses where Anna C. Toomsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 1410 6th Ave S, Mercyone Clear Lake Family MedicineClear Lake, IA 50428 (641) 357‑2191
- 203 S 2nd St, Mercyone Sheffield Family MedicineSheffield, IA 50475 (641) 892‑4495
Group practices
Medicare enrollment lists Anna C. Toomsen as a member of this group (CMS data updated October 2, 2026).
- North Iowa Mercy Clinics302 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Iowa
Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.
Other clinicians in North Iowa Mercy Clinics
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2016 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619326543 |
| 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
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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