Charles T. Yohannan, MD

Medicare activity in 2024

Official CMS public-use data for Charles T. Yohannan, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)590 services
2. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)221 services
3. Hospital discharge day management, more than 30 minutes (99239)110 services
4. Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by th (G0316)107 services
5. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)74 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%
• Arthritis64%
• Ischemic heart disease57%
• Chronic kidney disease50%
• Heart failure45%

Hospitals where Charles T. Yohannan works

Medicare's Facility Affiliation Data lists Charles T. Yohannan 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.

• Edward HospitalNaperville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140231
• Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140200

Practice locations

Addresses where Charles T. Yohannan is enrolled with Medicare (CMS data updated October 2, 2026).

• 25 N Winfield Rd, Suite 400Winfield, IL 60190 (630) 790‑1872

Group practices

Medicare enrollment lists Charles T. Yohannan as a member of this group (CMS data updated October 2, 2026).

• Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Illinois →

Other hospitalists in Winfield

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

• Sudha Srinivasan, MD
• Nazia Ayub, MD
• Jacob A. Kaiser, MD
• Jennifer K. Yin, MD
• Timothy R. Long, DO
• Saad Jamil, MD
• Gladys Velasquez, MD
• Rabiya M. Khan, MD

All hospitalists in Winfield →

Other clinicians in Dupage Medical Group Ltd

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

• Hazem Alhawasli, MD
• Abigail E. Digby, PA
• Kathleen A. Mahan, MD
• Scott Ellis, PT
• Traci Walters, PA
• Jason C. Dy, 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