Glenn P. Zemel, MD

Medicare activity in 2024

Official CMS public-use data for Glenn P. Zemel, 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. Anesthesia for other procedure on large bowel using an endoscope (00811)29 services
2. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)20 services
3. Anesthesia for procedure on small and large bowel using an endoscope (00813)13 services
4. Anesthesia for lens surgery (00142)11 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 pressure73%
• Arthritis49%
• Diabetes32%
• Ischemic heart disease26%
• Depression25%

Hospitals where Glenn P. Zemel works

Medicare's Facility Affiliation Data lists Glenn P. Zemel 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.

• Froedtert Memorial Lutheran HospitalMilwaukee, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520177
• Northwestern Medicine Delnor Community HospitalGeneva, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140211

Practice locations

Addresses where Glenn P. Zemel is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 7; the Medicare profile lists all.

• 300 Randall RdGeneva, IL 60134 (630) 208‑4060
• 304 Randall RdGeneva, IL 60134
• 660 N Westmoreland Rd, 302 Lake Forest ObgynLake Forest, IL 60045 (312) 926‑6146
• 675 N Saint Clair StChicago, IL 60611
• 675 N St ClairChicago, IL 60611

Group practices

Medicare enrollment lists Glenn P. Zemel as a member of these groups (CMS data updated October 2, 2026).

• Northwestern Medical Faculty Foundation4,503 clinicians in the group
• The Medical College of Wisconsin Inc2,115 clinicians in the group

Specialties

• Anesthesiologyprimary
• Interventional Pain Managementalso

Find other Anesthesiology doctors in Illinois →

Other anesthesiologists in Geneva

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

• Ruta Cepaitis, MD
• Mark A. Staudacher, MD
• Atif H. Khan, DO
• Charley Ding, MD
• Evelyn Hofferica, MD
• Asim N. Khan, MD
• Christopher R. Cambic, MD
• Alex A. Stanziola, MD

All anesthesiologists in Geneva →

Other clinicians in Northwestern Medical Faculty Foundation

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

• Samir F. Abboud, MD
• Kristin A. Dolling, MD
• Christopher J. Soriano
• Landon J. Duyka, MD
• Zachary C. Dietch, MD
• Martha L. Twaddle, 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