Owaiz Ansari

Medicare activity in 2024

Official CMS public-use data for Owaiz Ansari, 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.

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%
• Arthritis70%
• Ischemic heart disease30%
• Diabetes29%
• Osteoporosis22%

Hospitals where Owaiz Ansari works

Medicare's Facility Affiliation Data lists Owaiz Ansari 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.

• Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
• Northwestern Medicine Delnor Community HospitalGeneva, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140211
• Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140116
• Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281

Practice locations

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

• 25 N Winfield RdWinfield, IL 60190 (630) 665‑9340
• 300 Randall RdGeneva, IL 60134 (630) 208‑3000

Group practices

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

• Radiology Subspecialists of Northern Illinois LLC32 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Illinois →

Other radiologists in Winfield

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

• Waseem K. Khan, MD
• Stanley Kim, MD
• Nilay A. Patel, MD
• Ryan T. Foley, MD
• David J. Spirer, MD
• Andrea L. Magee, MD
• Eric M. Tarkowski, MD
• Mohammed Mirza, MD

All radiologists in Winfield →

Other clinicians in Radiology Subspecialists of Northern Illinois LLC

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

• Craig A. Nasralla, MD
• Gregory J. Zweig, MD
• Kalyana C. Poruri, MD
• Mark J. Kelly, MD
• David S. Chiang, MD
• Kiran V. Talanki, 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