Vascular Surgery Physicians & Staff


Apostolos K. Tassiopoulos, MD

Chief, Vascular and Endovascular
Surgery Division

Mohsen Bannazadeh, MD
Dr. Antonios P. Gasparis | Stony Brook Vascular Surgeon
Antonios P. Gasparis, MD

Director, Center for Vein Care
Dr. Angela A. Kokkosis | Stony Brook Vascular Surgeon
Angela A. Kokkosis, MD
George J. Koullias, MD, PhD

David S. Landau, MD
Dr. Shang A. Loh | Stony Brook Vascular Surgeon
Shang A. Loh, MD

For consultations/appointments, please call 631-638-1670 (Vascular Center)

or 631-444-VEIN (8346) (Center for Vein Care).


Vascular Physiologist


Dr. Nicos Labropoulos | Stony Brook Vascular Physiologist
Nicos Labropoulos, PhD

Director, Non-Invasive Vascular Laboratory

For appointments at the Non-Invasive Vascular Laboratory, please call 631-444-1716.

Clinical Support Staff
  • Julia Barone, NP, Physician Extender for Dr. Gasparis
  • Olympia Christoforatos, RN, MS, Nurse Navigator
  • Carole Duarte, PA, Physician Extender for Dr. Kokkosis and Dr. Sikalas
  • Nancy Fenster, RN, Nurse Manager, Vascular Center (Centereach)
  • Ali Jackson, PA, Physician Extender for Dr. Tassiopoulos
  • Deborah Leone, PA, Physician Extender for Dr. Koullias
  • Krystal Kane, PA, Physician Extender for Dr. Gasparis
  • Tara McSweeney, NP, Physician Extender for Dr. Landau and Dr. Loh
  • Jessica Norton, RVT, Outpatient Vascular Lab Director
  • Christian Routh, NP, Inpatient Physician Extender
  • Kristy Stanfield, PA, Physician Extender for Dr. Gasparis and Dr. Tassiopoulos
Administrative Staff
  • Zhanna Alaguzova, National Surgical Quality Improvement Program (NSQIP) Performance Specialist
  • Rosemary Blanco, Administrative Assistant to Dr. Kokkosis and Dr. Sikalas | 631-444-9120
  • Kelly Buencamino, Insurance Authorization Specialist | 631-638-1688
  • Joanne Carnaxide, Administrative Assistant to Dr. Loh and Dr. Tassiopoulos | 631-444-8114
  • Amy Enrico, Office Manager, Vascular Center (Centereach) | 631-638-1684
  • Elizabeth Isnardi, Administrative Assistant to Dr. Bannazadeh and Dr. Koullias | 631-444-8377
  • Panagiota Kanakaki, Administrative Assistant to Dr. Gasparis | 631-444-8346
  • Helene Long, Insurance Authorization Specialist | 631-638-1687
  • Krystal Matera, Administrative Assistant to Dr. Tassiopoulos | 631-444-2683
Research Coordinator & Investigator
  • Giuseppe Caso, MD, PhD