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. Gary James Janssen located in the city of Marshfield, state Wisconsin. The legal address of the Doctor 1000 N Oak Ave. Directions to the Doctor Dr. Gary James Janssen can be found on our interactive map. Ask your questions by calling Data not provided 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. Gary James Janssen - Marshfield ← View details 1000 N Oak Ave, Wisconsin, Marshfield, 54449, Marshfield, Wisconsin 54449 Data not provided