Dr. Sonnenburg obtained his undergraduate degree in Molecular Biology at the University of Wisconsin-Madison. He then attended medical school at the Medical College of Wisconsin, where he received numerous honors including the prestigious Millman Award. He completed residency training at the University of North Carolina in Chapel Hill, during that time he published articles on the topics of revision sinus surgery and skull base surgery. Since starting practice Dr. Sonnenburg completed training and has become a Fellow of the American Academy of Otolaryngic Allergy and also has become a Fellow of the American College of Surgeons.
Dr. Sonnenburg, his wife, son and three daughters live in Peshtigo. A family man at heart, he enjoys participating in his children's activities at school and church.

His scope of practice includes all aspects of ENT care including pediatrics, nasal and endoscopic sinus surgery, somnoplasty, ear surgery, snoring, sleep apnea and head and neck oncology (including skin cancer and thyroid/parathyroid surgery).
Dr. Hnatuk and family call Marinette home. He is involved in many local activities including mission work, hockey and horses.

He earned a BA with distinction from Indiana University in 1998. He attended medical school at the University of Kentucky College of Medicine in Lexington, earning his M.D. with Distinction in 2002. He completed his surgical training at the University of Kentucky Medical Center with an internship in general surgery followed by a residency in otolaryngology/head and neck surgery.
Gossman's published works include Analysis of Unknown Primary Squamous Cell Carcinomas Metastatic to the Neck and Management of Frontal Sinus Fractures: A review of 96 Cases.
He presented at several prestigious conferences, and is authoring a paper on Vestibular Evoked Myogenic Potentials: Response Changes in Meniere's Disease Patients Treated with Transtympanic Gentamycin Therapy.
Dr. Gossman, his wife and two sons live in Peshtigo. His is an avid snowboarder, skier and hunter, and claims to be a bit of a cribbage legend.

Katie obtained undergraduate Bachelor of Science degrees in Communicative Disorders and Nursing from the University of Wisconsin-Madison. After two years working as a BSN in Freeport, Illinois, Katie returned to UW-Madison to earn her Masters Degree as a Nurse Practitioner. While in graduate school, Katie was awarded the Rural Practice Scholarship Award and is a member of Sigma Theta Tau Nursing Honors Society.
Katie, her husband and three children live in Marinette. She is active with her area Catholic schools, an avid runner and youth volleyball coach.