Clinicians affiliated with Newark Emergency Center

33 clinicians on file with this group · most practice in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD · PAC ID 9931620291

Affiliation snapshotOctober 2, 2026CMS Doctors and Clinicians file, current snapshot (no end-of-2024 archive), applied to 2024

Activity year2024Medicare Part B claims, Original Medicare fee-for-service

21 clinicians affiliated with Newark Emergency Center are in the 2024 Medicare Part B data, 13 of them physicians. Data years with affiliated clinicians: 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

Each clinician's exact figures are in their Physician Report, from their page; a specialty's figures in this market are in a Market Comparison. View sample report · Already purchased? Open your report

Affiliated clinicians by specialty, 2024

All specialties · Emergency Medicine (12) · Physician Assistant (7) · General Surgery (1) · Nurse Practitioner (1)

Specialty links go to the specialty in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD.

Clinicians affiliated with Newark Emergency Center, 2024

Alphabetical by last name; 21.

Name	Specialty	City
Janice K Balas, MD	Emergency Medicine	Wilmington, DE
Danielle M Dinorscia, PA-C	Physician Assistant	Chester, PA
Andrew C Duckworth, PAC	Physician Assistant	Newark, DE
Gregory D Frattaroli, M.D.	Emergency Medicine	Chester, PA
John Hafycz	Emergency Medicine	Bethlehem, PA
Jack C Horowitz, MD	Emergency Medicine	Wilmington, DE
Karen J Lefrak, MD	Emergency Medicine	Elkton, MD
Kristen D Marra, PA-C	Physician Assistant	Newark, DE
Jason L Matthews, M.D.	Emergency Medicine	Wilmington, DE
Jennifer T Mink, M.D.	Emergency Medicine	Newark, DE
Brenda D Nardozzi, FNP	Nurse Practitioner	Wilmington, DE
Arayel Osborne, M.D.	Emergency Medicine	Newark, DE
Anuj A Parikh, M.D.	Emergency Medicine	Chattanooga, TN
Michael B Peters, MD	General Surgery	Newark, DE
Vincent R Russell, PA-C	Physician Assistant	Newark, DE
Michelle L Shaw, PA-C	Physician Assistant	Newark, DE
Francis J Squadrito, M.D.	Emergency Medicine	Philadelphia, PA
Hunter T Tarburton, PA-C	Physician Assistant	Hockessin, DE
Erin E Watson, M.D.	Emergency Medicine	Newark, DE
Mary Wilson, PA	Physician Assistant	Montgomeryville, PA
George R Zlupko, MD	Emergency Medicine	Newark, DE

Practice locations

Listed practice locations in Delaware.

Source: CMS Doctors and Clinicians National Downloadable File, snapshot October 2, 2026.

Membership comes from the CMS Doctors and Clinicians file. CMS does not publish an end-of-year archive of it, so the current snapshot is applied to every data year. A clinician affiliated with several groups or hospitals appears on each of their pages. How group pages are built · Limitations