Quick answers
- Does Katherine D. Bonnichsen accept Medicare assignment?
- Yes. Medicare's clinician data says Katherine D. Bonnichsen 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 Katherine D. Bonnichsen see?
- In 2024, CMS data shows 711 Original Medicare patients and 3,166 services for Katherine D. Bonnichsen. This counts Original Medicare only and measures volume, not quality.
- What is Katherine D. Bonnichsen's NPI number?
- 1003234832. 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 Katherine D. Bonnichsen, 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 | 711 |
|---|---|
| Services billed to Medicare | 3,166 |
| Different services or procedures | 52 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)1,238 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)551 services
- Destruction of precancer skin growth, 1 growth (17000)374 services
- Biopsy of related skin growth, first growth (11102)188 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)159 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 cholesterol67%
- High blood pressure66%
- Arthritis38%
- Diabetes26%
- Ischemic heart disease21%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)18%
Hospitals where Katherine D. Bonnichsen works
Medicare's Facility Affiliation Data lists Katherine D. Bonnichsen 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.
- Avera Hand County Memorial Hospital and ClinicMiller, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431337
- Avera McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430016
- Avera Missouri River Health CenterGettysburg, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431302
- Avera St Mary's HospitalPierre, SD · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 430015
Practice locations
Addresses where Katherine D. Bonnichsen is enrolled with Medicare (CMS data updated October 2, 2026).
- 801 E Sioux AvePierre, SD 57501 (605) 224‑5901
Group practices
Medicare enrollment lists Katherine D. Bonnichsen as a member of this group (CMS data updated October 2, 2026).
- Avera St Marys97 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in South Dakota
Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.
Other clinicians in Avera St Marys
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 2014 (12 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003234832 |
| 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