Karl Roos, MD
NPI 1518004803 · Nephrology Physician · Mankato, MN
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karl Roos, MD is a Nephrology Physician provider in Mankato, MN (NPI 1518004803).
Provider details
- NPI number
- 1518004803
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- TL-1590 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
6,193 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 642 | $124 |
| 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'SG2211 | 624 | $16 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 471 | $9 |
| Phosphate Level84100 | 385 | $5 |
| Parathormone (parathyroid Hormone) Level83970 | 364 | $40 |
| Magnesium Level83735 | 360 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Calcitriol | 505 | 141 |
| Torsemide | 197 | 56 |
| Allopurinol | 167 | 52 |
| Amlodipine Besylate | 165 | 45 |
| Losartan Potassium | 164 | 52 |
| Carvedilol | 144 | 38 |
| Potassium Chloride | 107 | 35 |
| Dapagliflozin Propanediol |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$13 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-30
- Last updated
- 2020-07-15
- Certified
- 2020-07-15
Frequently asked questions
- What is Karl Roos's NPI number?
- Karl Roos's National Provider Identifier (NPI) is 1518004803, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karl Roos's specialty?
- Karl Roos is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Karl Roos located?
- Karl Roos's practice location on file with NPPES is 1230 East Main Street, Mankato, MN 56002.
- What is Karl Roos's phone number?
- The practice phone number listed in the NPPES registry for Karl Roos is (507) 625-1811.
- Does Karl Roos accept Medicare?
- Karl Roos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karl Roos's NPI active?
- Yes — Karl Roos's NPI (1518004803) is active in the NPPES registry as of the last update on 2020-07-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.