Manhattan's Leader in Vascular Care & Dialysis Access Management

Dean C. Preddie, MD

Interventional Radiologist
Medical Director

Dean C. Preddie, MD is an interventional nephrologist specializing in dialysis access management. Dr. Preddie performs minimally invasive dialysis access procedures, including those for critical maintenance and management for a dialysis patient’s access to remain fully functional.

Dr. Preddie earned both his master’s and medical degrees at Washington University in St. Louis and completed internal medicine residency training at Wayne State University in Detroit, Michigan. After completing subspecialty training in nephrology at Columbia University in New York City, he joined the faculty as an assistant professor of clinical medicine, specializing in glomerular diseases, hypertension, and critical care, as well as acute and chronic dialysis management.

Dr. Preddie’s commitment to improving vascular access options for his dialysis patients led him to undergo training with Dr. Gregg Miller, MD, an expert in dialysis vascular access care. He continued to hone his interventional skills with Dr. Miller while maintaining his clinical responsibilities at Columbia University before joining this organization on a full-time basis, focusing on maintaining proper function of dialysis accesses and supporting the physician training program.

Dr. Preddie maintains an appointment as an adjunct clinical professor of medicine in the Columbia University Division of Nephrology. He is a member of the American and International Societies of Nephrology as well as the American Society of Diagnostic and Interventional Nephrology.

Dean C. Preddie, MD is board certified in internal medicine and nephrology.

Mark Song, MD

Vascular Surgeon

Mark Song, MD is a vascular surgeon with more than 20 years of expertise specializing in minimally invasive dialysis access maintenance procedures. These include arteriovenous fistula and graft examination for endovascular intervention, as well as catheter placement and management for hemodialysis patients.

Dr. Song earned his medical doctorate from State University of New York (SUNY) Downstate Medical Center Brooklyn, New York where he also completed his residency and fellowship in vascular surgery. He is active in vascular surgery professional associations including serving as Secretary and President Elect New York Society for Vascular Surgery and is a member of the Board of Directors at Brooklyn and Long Island Chapter of the American College of Surgeons. Dr. Song has contributed to research and published extensively in professional journals including The FASEB Journal, American Journal of Cardiology and the Journal of the Society for Vascular Medicine and Biology, among others. He is board certified by the American Board of Surgery-General Surgery and Vascular Surgery and the National Medical Board of Examiners.