Dr. William C. O'callahan graduated from the University of Massachusetts Medical School in 1990. He works in Newton Lower Falls, MA and specializes in Emergency Medicine. Dr. O'callahan is affiliated with Newton-Wellesley Hospital.
Years in Practice: 25 Years
Languages Spoken: English
Medical School: University of Massachusetts Medical School
Graduation Date: 1990
Hospital Affiliations: Newton-Wellesley Hospital
Specialties: Emergency Medicine