Quick answers
- Does Karl P. Roos accept Medicare assignment?
- Yes. Medicare's clinician data says Karl P. Roos 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 Karl P. Roos see?
- In 2024, CMS data shows 511 Original Medicare patients and 13,244 services for Karl P. Roos. This counts Original Medicare only and measures volume, not quality.
- What is Karl P. Roos's NPI number?
- 1518004803. 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 Karl P. Roos, 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 | 511 |
|---|---|
| Services billed to Medicare | 13,244 |
| Different services or procedures | 55 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)642 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)624 services
- Insertion of needle into vein for collection of blood sample (36415)471 services
- Phosphate level (84100)385 services
- Parathormone (parathyroid hormone) level (83970)364 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%
- Chronic kidney disease75%
- Diabetes58%
- Heart failure39%
- Arthritis37%
Hospitals where Karl P. Roos works
Medicare's Facility Affiliation Data lists Karl P. Roos 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.
- Abbott Northwestern HospitalMinneapolis, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240057
- Mayo Clinic Health System - MankatoMankato, MN · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 240093
- New Ulm Medical CenterNew Ulm, MN · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 241378
- Sleepy Eye Medical CenterSleepy Eye, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241327
- United Hospital DistrictBlue Earth, MN · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 241369
Practice locations
Addresses where Karl P. Roos is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 10; the Medicare profile lists all.
- 1025 Marsh StMankato, MN 56001
- 1230 E Main StMankato, MN 56001
- 1230 Main St E, PO Box 8674Mankato, MN 56002 (507) 625‑1811
- 1324 5th St NNew Ulm, MN 56073 (507) 233‑1000
- 1411 Premier DrMankato, MN 56001 (507) 388‑6000
Group practices
Medicare enrollment lists Karl P. Roos as a member of this group (CMS data updated October 2, 2026).
- Mankato Clinic Ltd242 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Mankato
Clinicians with the same Medicare primary specialty in Mankato, MN — not a recommendation.
Other clinicians in Mankato Clinic Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 2005 (21 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1518004803 |
| 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