Suggest an Edit Name* Categories* Doctor Hospital Pharmacy Add category State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 09:00 am — 05:00 pm Tuesday: 09:00 am — 05:00 pm Wednesday: 09:00 am — 05:00 pm Thursday: 09:00 am — 05:00 pm Friday: 09:00 am — 05:00 pm Saturday: 09:00 am — 03:00 pm Company description Dr. William Gerard O'Callaghan located in the city of McAllen, state Texas. The legal address of the Doctor 100 E Ridge Rd. Directions to the Doctor Dr. William Gerard O'Callaghan can be found on our interactive map. Ask your questions by calling 9566821888 on workdays.</br></br></br>NPI number: Data not provided</br>Provider's gender: Data not provided</br>Practice names: Data not provided</br>Board certifications: American Board of Internal Medicine Certification in Internal Medicine American Board of Internal Medicine Sub-certificate in Cardiovascular Disease (Internal Medicine) American Board of Internal Medicine Sub-certificate in Clinical Cardiac Electrophysiology (Internal Medicine) Your comments (not for publishing) * — Required information Dr. William Gerard OCallaghan - McAllen ← View details 100 E Ridge Rd, Texas, McAllen, 78503, Mcallen, Texas 78503 9566821888