About William C. O'Callahan, Jr., MD
William Charles O'Callahan, Jr., MD is an emergency medicine doctor. Dr. William C. O'Callahan, Jr. has 18+ years of experience in emergency medicine.
Practice Locations
Dr. William C. O'Callahan, Jr. may be affiliated with:
Education
William C. O'Callahan, Jr., MD earned a degree of a Doctor of Medicine.
Licenses
William C. O'Callahan, Jr., MD has been registered with the National Provider Identifier database since May 31, 2006, and his NPI number is 1114964186. Dr. O'Callahan, Jr. certified his NPI information on 03/16/2023.
Book an Appointment
To schedule an appointment with Dr. William C. O'Callahan, Jr., please call (508) 829-3800.