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 David O Halloran located in the city of Fort Collins, state Colorado. The legal address of the Doctor 1301 Riverside Ave. Directions to the Doctor Dr. William David O Halloran can be found on our interactive map. Ask your questions by calling 9704823668 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: Data not provided Your comments (not for publishing) * — Required information Dr. William David O Halloran - Fort Collins ← View details 1301 Riverside Ave, Colorado, Fort Collins, 80524, Fort Collins, Colorado 80524 9704823668