Quick answers
- Does Catherine P. Benziger accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine P. Benziger 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 Catherine P. Benziger see?
- In 2024, CMS data shows 947 Original Medicare patients and 1,405 services for Catherine P. Benziger. This counts Original Medicare only and measures volume, not quality.
- What is Catherine P. Benziger's NPI number?
- 1518266394. 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 Catherine P. Benziger, 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 | 947 |
|---|---|
| Services billed to Medicare | 1,405 |
| Different services or procedures | 31 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)762 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)180 services
- Exercise or drug-induced heart stress test with electrocardiogram (ecg) with review by physician (93018)51 services
- Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)43 services
- Ultrasound of heart blood flow, valves and chambers, follow-up (93321)41 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%
- Arthritis51%
- Ischemic heart disease49%
- Heart failure47%
- Atrial fibrillation43%
Hospitals where Catherine P. Benziger works
Medicare's Facility Affiliation Data lists Catherine P. Benziger 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.
- Essentia Health DuluthDuluth, MN · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 240019
- Essentia Health St Mary's Medical CenterDuluth, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 240002
- Essentia Health VirginiaVirginia, MN · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 240084
- St Marys Hospital SuperiorSuperior, WI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 521329
- Tamarack Health Ashland Medical CenterAshland, WI · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 521359
Practice locations
Addresses where Catherine P. Benziger is enrolled with Medicare (CMS data updated October 2, 2026).
- 1180 Chandler DrSpooner, WI 54801 (715) 635‑2151
- 402 E 2nd StDuluth, MN 55805 (218) 786‑3443
- 819 Ash StSpooner, WI 54801 (715) 635‑5303
Group practices
Medicare enrollment lists Catherine P. Benziger as a member of these groups (CMS data updated October 2, 2026).
- St Marys Hospital of Superior95 clinicians in the group
- St Marys Medical Center93 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Wisconsin →
Other cardiologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Other clinicians in St Marys Hospital of Superior
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 2011 (15 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1518266394 |
| 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