Quick answers
- Does Karsten J. Rohlfs accept Medicare assignment?
- Medicare's clinician data says Karsten J. Rohlfs may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Karsten J. Rohlfs see?
- In 2024, CMS data shows 89 Original Medicare patients and 321 services for Karsten J. Rohlfs. This counts Original Medicare only and measures volume, not quality.
- What is Karsten J. Rohlfs's NPI number?
- 1902251051. 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 Karsten J. Rohlfs, 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 | 89 |
|---|---|
| Services billed to Medicare | 321 |
| Different services or procedures | 18 |
| Participating Medicare provider | Yes |
| Average age of these patients | 82 |
Most frequent services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)236 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 pressure73%
- High cholesterol52%
- Arthritis49%
- Anxiety45%
- Alzheimer's disease or dementia44%
- Diabetes39%
Hospitals where Karsten J. Rohlfs works
Medicare's Facility Affiliation Data lists Karsten J. Rohlfs 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.
- Hawarden Regional HealthcareHawarden, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161311
- Sanford Canton-Inwood Medical Center - CAHCanton, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431333
- Sanford Usd Medical CenterSioux Falls, SD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 430027
Practice locations
Addresses where Karsten J. Rohlfs is enrolled with Medicare (CMS data updated October 2, 2026).
- 400 N Hiawatha DrCanton, SD 57013
Specialties
- Family Practiceprimary
Other family doctors in South Dakota
Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 2016 (10 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1902251051 |
| 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