Fond du Lac St. Agnes Hospital Get Directions St. Agnes Hospital 420 E. Division Street Fond du Lac, WI 54935 Phone: (920) 926-8401 Providers at This Location Sumon Bhattacharjee, MD, FACS NeurosurgeonMeet Dr. Bhattacharjee Alexander T. Hawkins, MD NeurosurgeonMeet Dr. Hawkins Michelle A. Ziegelbauer, APNP NeurosurgeryMeet Michelle