Quick answers
- Does Craig A. Siverhus accept Medicare assignment?
- Yes. Medicare's clinician data says Craig A. Siverhus 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 Craig A. Siverhus see?
- In 2024, CMS data shows 134 Original Medicare patients and 183 services for Craig A. Siverhus. This counts Original Medicare only and measures volume, not quality.
- What is Craig A. Siverhus's NPI number?
- 1841224128. 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 Craig A. Siverhus, 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 | 134 |
|---|---|
| Services billed to Medicare | 183 |
| Different services or procedures | 33 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Ultrasound study of arm or leg veins with compression and maneuvers (93970)44 services
- Ultrasound study of one arm or leg veins with compression and maneuvers (93971)29 services
- Ultrasound study of arm and leg arteries (93922)19 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%
- Arthritis53%
- Chronic kidney disease46%
- Diabetes44%
- Ischemic heart disease43%
Hospitals where Craig A. Siverhus works
Medicare's Facility Affiliation Data lists Craig A. Siverhus 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.
- Ascension Columbia St Marys Hospital MilwaukeeMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520051
Practice locations
Addresses where Craig A. Siverhus is enrolled with Medicare (CMS data updated October 2, 2026).
- 13133 N Port Washington Rd, Suite 224Mequon, WI 53097 (262) 243‑0064
- 2350 N Lake Dr, Suite 304Milwaukee, WI 53211 (414) 298‑7222
Group practices
Medicare enrollment lists Craig A. Siverhus as a member of this group (CMS data updated October 2, 2026).
- Madison Medical Affiliates Inc86 clinicians in the group
Specialties
- General Surgeryprimary
- Vascular Surgeryalso
Other general surgeons in Mequon
Clinicians with the same Medicare primary specialty in Mequon, WI — not a recommendation.
Other clinicians in Madison Medical Affiliates Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical College Of Wisconsin |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1841224128 |
| 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