William G O'callaghan, MD is a Cardiologist (Heart Specialist) - General practicing in McAllen, TX
He has not yet shared a personalized biography with Doctor.com.
| Institution | Focus | Year |
|---|---|---|
| Residency - Duke University Medical Center, Cardiovascular Diseases | Not Specified |
| Certification | Cert. Body | Year |
|---|---|---|
| Internal medicine | Internal Medicine | Not Specified |
William G O'callaghan, MD has not yet indicated the hospitals that he is affiliated with.
Internal Medicine
Years In Practice: 41 (started in 1984)
Accepts New Patients: Yes
