Dr Callahan completed her undergraduate studies at Rutgers University and graduated from the University of Medicine and Dentistry of NJ Medical School in 1991. She did her Internal Medicine Residency at Saint Vincent’s Hospital in New York, where she was selected as Chief Resident (1994-95). In 1995, she completed her Geriatrics Fellowship at Mount Sinai School of Medicine where she was selected Chief Fellow in 1996.
Upon completion of her fellowship, Dr Callahan joined the Mount Sinai faculty, where she is currently Associate Professor of the Brookdale Department of Geriatrics and Palliative Medicine and Department of Internal Medicine. Her primary clinical and educational venue was the Acute Care for the Elderly (ACE) Service, whereas Medical Director, Dr Callahan established a setting that provides quality hospital care for geriatric patients and served as a teaching site for the education of students of all disciplines, including medicine, nursing, social work, and physical therapy. In 2006, her focus shifted to the Coffey Geriatrics Ambulatory Care Practice where she works as Administrative Firm Chief, provides consultative and primary care to the community elderly, and teaches medical students, residents and fellows.