Dr. William G. O'callaghan has been practicing medicine for 37 years. Dr. O'callaghan graduated from the Univ Coll of Dublin, Nat'l Univ of Ireland, Fac of Med, Dublin, Ireland in 1977. He practices medicine in McAllen, TX and specializes in Cardiovascular Disease and Interventional Cardiology. Dr. O'callaghan is affiliated with Rio Grande Regional Hospital and McAllen Heart Hospital. He speaks English and Spanish.
Years in Practice: 37 Years
Languages Spoken: English, Spanish
Medical School: Univ Coll of Dublin, Nat'l Univ of Ireland, Fac of Med, Dublin, Ireland
Graduation Date: 1977
Specialties: Cardiovascular Disease, Interventional Cardiology