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. John J O'Brien located in the city of O Fallon, state Missouri. The legal address of the Doctor 9426 Phoenix Village Pkwy. Directions to the Doctor Dr. John J O'Brien can be found on our interactive map. Ask your questions by calling 6365615999 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 Family Medicine Certification in Family Medicine Your comments (not for publishing) * — Required information Dr. John J OBrien - O Fallon ← View details 9426 Phoenix Village Pkwy, Missouri, O Fallon, 63368, O Fallon, Missouri 63368 6365615999