


Dr. William O'Callahan Jr, MD
Dr. William O'Callahan Jr, MD is an emergency medicine specialist in Wilbraham, MA and has over 30 years of experience in the medical field. He graduated from UNIVERSITY OF MASSACHUSETTS / BOSTON CAMPUS in 1990. He is affiliated with Newton-Wellesley Hospital.
Practice
2040 Boston Rd Ste 5 Wilbraham, MA 01095Make an Appointment
At a Glance
- Area of Expertise
- Practices at Top Hospital
- Hospital Satisfaction

Save money with free prescription discounts
Experience Check
Search for experience in a specific area
Insurance Check
Search for your insurance carrier and choose your plan type
Dr. O'Callahan Jr's Reviews
Likelihood to recommend Dr. O'Callahan Jr
5.0
5 Star | 100% | 100% |
4 Star | 0% | 0% |
3 Star | 0% | 0% |
2 Star | 0% | 0% |
1 Star | 0% | 0% |
Overall Patient Satisfaction
Likelihood of recommending Dr. O'Callahan Jr to family and friends is 5 out of 5
About Me
biography
Dr. William O'Callahan Jr, MD is an emergency medicine specialist in Wilbraham, MA and has over 30 years of experience in the medical field. He graduated from UNIVERSITY OF MASSACHUSETTS / BOSTON CAMPUS in 1990. He is affiliated with Newton-Wellesley Hospital.Emergency Medicine
*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
University Of Massachusetts / Boston Campus
Medical School, 1990
Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.
Learn more about medical license public record checkHealthgrades Tips for Getting the Right Healthcare
Locations
Practice
Practice
Affiliated Hospitals
- Recipient of 15
hospital awardsAmerica's 250 Best Hospitals Award™ (2025, 2024)
Top 5% in the nation for consistently delivering clinical quality
View all awardsPatient Safety Excellence Award™ (2024)
Top 5% in the nation for consistently delivering clinical quality
View all patient feedbackHow patients felt about the care they received at this hospital.
89%Patients said they were given information about recovering at home5% higher than the national average
83%Patients said that doctors always listened to them and explained things well7% higher than the national average
Compare Providers
Providers shown based on Dr. O'Callahan Jr's location and specialty. Show more Emergency Medicine Doctors / Intensivists.
Leave a review
How was your experience with Dr. O'Callahan Jr?