Karli J. Kreider-Zug, DO

Medicare activity in 2024

Official CMS public-use data for Karli J. Kreider-Zug, 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)348 services
2. Emergency department visit with moderate level of medical decision making (99284)93 services
3. Critical care, first 30-74 minutes (99291)37 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%
• Arthritis57%
• Depression46%
• Diabetes45%
• Ischemic heart disease45%

Hospitals where Karli J. Kreider-Zug works

Medicare's Facility Affiliation Data lists Karli J. Kreider-Zug 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.

• WellSpan York HospitalYork, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390046

Practice locations

Addresses where Karli J. Kreider-Zug is enrolled with Medicare (CMS data updated October 2, 2026).

• 1001 S George StYork, PA 17403 (717) 851‑2345

Group practices

Medicare enrollment lists Karli J. Kreider-Zug as a member of this group (CMS data updated October 2, 2026).

• York Hospital91 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Pennsylvania →

Other emergency medicine doctors in York

Clinicians with the same Medicare primary specialty in York, PA — not a recommendation.

• Amber S. Billet, MD
• Elizabeth C. Hall, MD
• Jeremiah W. White, MD
• Jack V. Ko, MD
• Antonia J. Brown, DO
• Gaser A. Ahmed, DO
• Christopher Johnson, MD
• Ivana L. Marji, MD

All emergency medicine doctors in York →

Other clinicians in York Hospital

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

• Amber S. Billet, MD
• Elizabeth C. Hall, MD
• Jeremiah W. White, MD
• Jack V. Ko, MD
• Steven K. Schirk, MD
• Gaser A. Ahmed, DO

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