Quick answers
- Does Kellie G. Den Hartog accept Medicare assignment?
- Yes. Medicare's clinician data says Kellie G. Den Hartog 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 Kellie G. Den Hartog see?
- In 2024, CMS data shows 13 Original Medicare patients and 17 services for Kellie G. Den Hartog. This counts Original Medicare only and measures volume, not quality.
- What is Kellie G. Den Hartog's NPI number?
- 1992261002. 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 Kellie G. Den Hartog, 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 | 13 |
|---|---|
| Services billed to Medicare | 17 |
| Different services or procedures | 10 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
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%
Hospitals where Kellie G. Den Hartog works
Medicare's Facility Affiliation Data lists Kellie G. Den Hartog 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 McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430016
- Avera Merrill Pioneer HospitalRock Rapids, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161321
Practice locations
Addresses where Kellie G. Den Hartog is enrolled with Medicare (CMS data updated October 2, 2026).
- 1100 S 10th AveRock Rapids, IA 51246 (712) 472‑5400
- 1200 1st Ave ESpencer, IA 51301
Group practices
Medicare enrollment lists Kellie G. Den Hartog as a member of these groups (CMS data updated October 2, 2026).
- Avera McKennan959 clinicians in the group
- Sanford Health Network351 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Rock Rapids
Clinicians with the same Medicare primary specialty in Rock Rapids, IA — not a recommendation.
Other clinicians in Avera McKennan
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992261002 |
| 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