George McGinniss, MD

Medicare activity in 2024

Official CMS public-use data for George McGinniss, 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. Emergency department visit with high level of medical decision making (99285)111 services
2. Emergency department visit with moderate level of medical decision making (99284)66 services
3. Critical care, first 30-74 minutes (99291)27 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%
• Arthritis48%
• Anxiety47%
• Diabetes38%
• Ischemic heart disease36%

Hospitals where George McGinniss works

Medicare's Facility Affiliation Data lists George McGinniss 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.

• Griffin HospitalDerby, CT · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 070031
• Yale-New Haven HospitalNew Haven, CT · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 070022

Practice locations

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

• 130 Division StDerby, CT 06418 (203) 735‑7421
• 1450 Chapel StNew Haven, CT 06511 (203) 789‑3000

Group practices

Medicare enrollment lists George McGinniss as a member of these groups (CMS data updated October 2, 2026).

• Yale University2,645 clinicians in the group
• Emergency Physicians of Connecticut PC30 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Connecticut →

Other emergency medicine doctors in Derby

Clinicians with the same Medicare primary specialty in Derby, CT — not a recommendation.

• Douglas Finefrock, DO
• Gabriel G. Paul, MD
• Rene Hipona, MD
• Sara R. Sievers Smets, DO
• Mark L. Quilon, MD
• Elizabeth Serunjogi, MD
• Robert F. Carroll Jr., MD
• Kaitlin A. McDonald, DO

All emergency medicine doctors in Derby →

Other clinicians in Yale University

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

• Shari Damast, MD
• Michael K. Sullivan
• Elspeth Hill
• Sina Nikayin, MD
• Sarah K. Thomen
• Christopher A. Schneble, 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