Our Leadership


Paul Sierzenski, MD, RDMS

President & CEO

  • Chair, Government Policy & Public Relations, ACEP Ultrasound Section
  • Director Emergency, Trauma & Critical Care Ultrasound
  • Director, Emergency Ultrasound Fellowship
  • Department of Emergency Medicine
  • Christiana Care Health System
  • Newark/Wilmington Delaware

Ellen Sierzenski, RDCS

Chair of Operations

  • Onsite Education/CME Coordinator
  • Bear, DE

Our Directors


Srikar Adhikari, MD, MS, RDMS

Director Midwest Region

  • Chief, Section of Emergency Ultrasound
  • Associate Professor
  • Department of Emergency Medicine
  • University of Arizona Health Sciences Center
  • Tuscson, AZ

Eitan Dickman, MD, RDMS

Director Northeast Region

  • Ultrasound Reimbursement Committee, ACEP Ultrasound Section
  • Director, Emergency Ultrasound Section
  • Director, EM Ultrasound Fellowship
  • Maimonides Medical Center, NY

Steffen "Hazzy" Fletcher, MD, RDMS

Director Corporate Accounts

  • Director, Emergency Ultrasound
  • Phoenix Physicians, FL

Rajesh Geria, MD, RDMS, FACEP

Director Mid-Atlantic Region

  • Chief, Division of Emergency and Critical Care Ultrasound
  • Councilor ACEP Section of Emergency Ultrasound
  • Assistant Professor & Staff Attending Physician
  • Department of Emergency Medicine
  • Robert Wood Johnson Medical School / University Hospital
  • New Brunswick, NJ

Jason Gukhool, MD, RDMS

Director Southwest Region

  • Community Ultrasound Task Force, ACEP Ultrasound Section
  • Director, Emergency Ultrasound
  • Greater Houston Emergency Physicians, TX

Stephen Leech, MD, RDMS

Director Southeast Region

  • Director, Emergency Ultrasound
  • Director, EM Ultrasound Fellowship
  • Orlando Regional Medical Center, FL

Daniel Morrison, MD, RDMS, FACEP

Director of Quality Assurance Program

  • Assistant Professor of Emergency Medicine
  • University of Medicine and Dentistry of New Jersey
  • Robert Wood Johnson Medical School, NJ

Jason Nomura, MD, RDMS

Medical Director of Education

  • Director Ultrasound Guided Vascular Access Training, AIUM
  • Associate Director, EM, Trauma & Critical Care Ultrasound
  • Associate Director, Emergency Ultrasound Fellowship
  • Christiana Care Health System
  • Newark/Wilmington Delaware

David Rosenblum, MD

Anesthesia Coordinator

  • Director of Pain Medicine Education
  • Brooklyn Premier Pain Management
  • Maimonides Medical Center, Dept. of Anesthesiology
  • Brooklyn, NY

James Tsung, MD, MPH

Director Pediatric Ultrasound

  • Chair, WINFOCUS Pediatric Committee; Past-Chair, Pediatric Commitee, ACEP Ultrasound Section
  • Director of Pediatric Emergency Ultrasound
  • Emergency Ultrasound Faculty
  • Mount Sinai School of Medicine, NY, NY

Our Additional Faculty


Gillian Baty, MD, MPH, RDMS

  • Director, Emergency Ultrasound
  • University of New Mexico, NM

Michael Bauman, MD, RDMS

  • Director, Emergency Ultrasound
  • Presbyterian Health System, NM

David Begleiter, MD

  • Phoenix Physicians, FL

Gerry Chiricolo, MD, RDMS

  • Associate Director, Emergency Ultrasound
  • North Shore University Hospital, NY

David T. Cook, MD

  • Charleston Emergency Services
  • Department of Emergency Medicine
  • Roper Bon Secours St. Francis Hospital
  • Charleston, SC

Robert J. Hyde, MD, RDMS

  • Assistant Professor
  • Geisel School of Medicine
  • Dartmouth-Hitchcock Medical Center
  • Lebanon, NH

Penelope C. Lema, MD, FACEP, RDMS

  • Director, Emergency Ultrasound Education and Assistant Professor
  • Strong Memorial Hospital, Rochester NY

Jennifer Mink, MD

  • Department of Emergency Medicine
  • Division of Emergency Ultrasound
  • Christiana Care Healthcare System
  • Newark, DE

Leslie Connor Nickels, MD, RDMS

  • Director, Emergency Ultrasound
  • University of Florida, FL

Julie O'Connor, MD, RDMS

  • Director, Emergency Ultrasound
  • Albert Einstein, PA

David Polan, MD, RDMS

  • Assistant Professor of Emergency Medicine
  • Clinical Director of Emergency Ultrasound
  • Memorial Campus, University of Massachusetts
  • Memorial Medical Center, Worcester, MA

John T. Powell, MD

  • Department of Emergency Medicine
  • Division of Emergency Ultrasound
  • Christiana Care Healthcare System
  • Newark, DE

Christopher Raio, MD, RDMS, FACEP

  • Associate Chairman
  • Director, Emergency Ultrasound
  • North Shore University Hospital, NY

Charles "Chip" Schmier, MD, RDMS

  • Director of Emergency Ultrasound
  • Department of Emergency Medicine
  • University of Nebraska Medical Center
  • Omaha, NE

Steve Seiler, RN BSN

  • Staff Nurse Emergency Room
  • Christiana Care Health System, Newark/Wilmington Delaware
  • Mid Atlantic Spine Institute
  • Certified Superuser Ultrasound IV Access

Dennis Trigueros, MD

  • Director, Emergency Ultrasound
  • San Antonio Hospital, CA

Our Support Staff


Lori Leech

Director of Information Technologies

  • President
  • L2Designs LLC
  • Orlando, FL