New York City

Hadi Halazun, MD
Internal Medicine & Cardiology

Dr. Halazun earned his bachelor’s degree at Brown University before attending Columbia University’s College of Physicians & Surgeons earning both the Leonard Tow and Arnold Gold humanism awards. Following medical school, he completed his internship and residency training in Internal Medicine at Columbia University Medical Center and stayed on for two years as Assistant Professor of Medicine with the hospitalist group. Dr. Halazun completed his fellowship in Cardiology at Mount Sinai Heart and served as chief during his final year. Prior to joining Private Medical, he worked as assistant professor in Cardiology at Weill Cornell-New York Presbyterian.

Kelly Fradin, MD
Pediatric Medicine

Dr. Kelly Fradin earned her undergraduate degree from Harvard before attending medical school at Columbia College of Physicians and Surgeons. Dr. Fradin completed her pediatric residency at the Children’s Hospital at Montefiore in the Bronx where she stayed on as faculty to care for children with complex medical conditions, conduct clinical research and educate medical students and trainees. Subsequently she worked in a public health capacity with NYC schools helping children with medical problems optimize their care in the community. Originally from Charlotte, NC, she was inspired to become a doctor by her experience surviving childhood cancer. Dr. Fradin is a published author and mother of two.

Samreen Hasan, MD
Internal Medicine

Dr. Hasan grew up in Wyoming and moved east to attend Brown University. After college, she did research at the Center for Immigrant Health at NYU and was inspired to pursue a career in medicine. Following medical school at UCSF, Dr. Hasan was awarded the Zuckerman Fellowship to study health policy and management at Harvard University, where she earned a master’s degree in public health. Dr. Hasan completed her residency at Columbia University, and has been practicing internal medicine in New York for the past decade. In her free time, she enjoys hiking, running, and spending time with her husband and two children.