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Emergency Medicine

Kathryn Groner, MD

Works at hospitals in Newark, DE · Elkton, MD · Delaware, Maryland

Summary

Dr. Kathryn Groner, MD is an emergency medicine doctor at 4755 Ogletown Stanton Rd, Newark, DE 19718. Phone: (302) 320-1300. Accepts Medicare assignment. In 2024, Kathryn Groner had 198 Original Medicare patients and 325 services. NPI 1346560687. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Emergency medicine doctor (Medicare lists Emergency Medicine)
  • Address: 4755 Ogletown Stanton Rd, Newark, DE 19718 · Directions (3 more locations)
  • Phone: (302) 320‑1300
  • Medicare: Accepts Medicare assignment
  • Hospitals: Christiana Hospital, Union Hospital of Cecil County
  • Group practice: Christiana Care Health Services Inc
  • Medical school: Drexel University College Of Medicine · graduated 2010 (16 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Kathryn Groner, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Kathryn Groner accept Medicare assignment?
Yes. Medicare's clinician data says Kathryn Groner accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Kathryn Groner see?
In 2024, CMS data shows 198 Original Medicare patients and 325 services for Kathryn Groner. This counts Original Medicare only and measures volume, not quality.
What is Kathryn Groner's NPI number?
1346560687. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Kathryn Groner, 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.

Original Medicare patients198
Services billed to Medicare325
Different services or procedures16
Participating Medicare providerYes
Average age of these patients75

Most frequent services

  1. Emergency department visit with high level of medical decision making (99285)156 services
  2. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)118 services
  3. Emergency department visit with moderate level of medical decision making (99284)28 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%
  • Arthritis53%
  • Diabetes40%
  • Chronic kidney disease40%
  • Ischemic heart disease39%

Hospitals where Kathryn Groner works

Medicare's Facility Affiliation Data lists Kathryn Groner 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.

  • Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
  • Union Hospital of Cecil CountyElkton, MD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 210032

Practice locations

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

Group practices

Medicare enrollment lists Kathryn Groner as a member of this group (CMS data updated October 2, 2026).

  • Christiana Care Health Services Inc1,483 clinicians in the group

Specialties

Find other Emergency Medicine doctors in Delaware →

Other emergency medicine doctors in Newark

Clinicians with the same Medicare primary specialty in Newark, DE — not a recommendation.

All emergency medicine doctors in Newark →

Other clinicians in Christiana Care Health Services Inc

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

Clinician information

CredentialMD
Medical schoolDrexel University College Of Medicine
Graduation year2010 (16 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1346560687
CorrectionsReport an error or suggest an update →

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