David R. Donnersberger, MD

Medicare activity in 2024

Official CMS public-use data for David R. Donnersberger, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)603 services
2. Brief communication technology-based service, e.g. virtual check-in, by a physician or other qualified health care professional who can report evaluation and management services, provided to an established patient, not originating from a related e/m servic (G2012)463 services
3. Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)352 services
4. Online digital evaluation and management service for an established patient for up to 7 days, total time 5-10 minutes (99421)282 services
5. Insertion of needle into vein for collection of blood sample (36415)184 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 cholesterol75%
• High blood pressure56%
• Arthritis41%
• Ischemic heart disease21%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)21%
• Atrial fibrillation20%

Hospitals where David R. Donnersberger works

Medicare's Facility Affiliation Data lists David R. Donnersberger 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.

• Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140010
• Northwestern Lake Forest HospitalLake Forest, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140130
• Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140281
• Swedish HospitalChicago, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140114

Practice locations

Addresses where David R. Donnersberger is enrolled with Medicare (CMS data updated October 2, 2026).

• 530 Winnetka AveWinnetka, IL 60093 (847) 441‑6888

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in Illinois →

Other internal medicine doctors in Winnetka

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

• John E. Croghan, MD
• Richard D. Stern, MD
• Thomas A. Stern, MD
• Carole P. Prete, MD
• Alexander M. Wind, MD
• Jana Mechurova, MD
• Eleanor G. Smith, MD
• Roman W. Mandzij, DO

All internal medicine doctors in Winnetka →

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