Willem Wisselink, MD

Medicare activity in 2024

Official CMS public-use data for Willem Wisselink, 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.

Most frequent services

1. Ultrasound study of arm or leg veins with compression and maneuvers (93970)124 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)86 services
3. Complete ultrasound study of arm and leg arteries (93923)47 services
4. Ultrasound study of one arm or leg veins with compression and maneuvers (93971)45 services
5. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)44 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%
• Diabetes64%
• Arthritis56%
• Chronic kidney disease56%
• Ischemic heart disease47%

Hospitals where Willem Wisselink works

Medicare's Facility Affiliation Data lists Willem Wisselink 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.

• OSF Little Company of Mary Medical CenterEvergreen Park, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140179
• University of Illinois Hospital and ClinicsChicago, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 140150

Practice locations

Addresses where Willem Wisselink is enrolled with Medicare (CMS data updated October 2, 2026).

• 1801 W Taylor St, 3fChicago, IL 60612 (312) 355‑4300

Group practices

Medicare enrollment lists Willem Wisselink as a member of this group (CMS data updated October 2, 2026).

• The Board of Trustees of the University of Illinois1,150 clinicians in the group

Specialties

• Vascular Surgeryprimary

Find other Vascular Surgery doctors in Illinois →

Other vascular surgeons in Chicago

Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.

• Erin C. Farlow, MD
• Ashley K. Vavra, MD
• Neha Sheng, MD
• Michele Richard, MD
• Sungho Lim, MD
• Chelsea A. Dorsey, MD
• Margaret C. Rigamer, MD
• Samson M. Chan, MD

All vascular surgeons in Chicago →

Other clinicians in The Board of Trustees of the University of Illinois

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Mariyam Humayun, MD
• Pavan K. Srivastava, MD
• Swetha Kalagara, MD
• Carolyn A. Dickens
• Richard S. Severin
• Mark H. Gonzalez, MD

Clinician information

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

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians