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About

BayCare Clinic is a large, physician-owned specialty-care provider based in Green Bay, WI, serving 13 communities in northeastern Wisconsin and Michigan’s Upper Peninsula. It offers ENT (Ear, Nose & Throat) services among its specialties, with options for near-home care, virtual visits, and patient resources. The clinic operates four offices (headquartered at 1035 Kepler Dr, Green Bay) and partners with Aurora BayCare Medical Center. Contact: 920-490-9046 or 1-920-405-5390.

Clinic Type

Ear, Nose & Throat (ENT)

Address

2845 Greenbrier Rd, Building 6, Suite F300, Green Bay, WI 54311

Phone

920-288-8230

Email

Opening Hours

Monday–Friday 8:00 AM – 4:30 PM; Saturday Closed; Sunday Closed

Services Offered

  • Ear, Nose & Throat (ENT)

Team

  • David G. Gossman, MD, FACS — Ear, Nose & Throat
  • Jon Slezak, MD — Ear, Nose & Throat
  • Robert Sonnenburg, MD, FACS — Ear, Nose & Throat
  • Abigail Degeneffe, NP — Ear, Nose & Throat
  • Kathleen M. Magnin, NP — Ear, Nose & Throat
  • Mackenzie Zuleger, NP — Ear, Nose & Throat

Insurance & Payment

Languages Spoken

FAQs

What are your hours of operation?

Monday: 8:00 AM - 4:30 PM; Tuesday: 8:00 AM - 4:30 PM; Wednesday: 8:00 AM - 4:30 PM; Thursday: 8:00 AM - 4:30 PM; Friday: 8:00 AM - 4:30 PM; Saturday: Closed; Sunday: Closed.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Google My Business (aggregated): 3.5/5 (11 reviews)

Patients praise

  • some patients report kindness and attentiveness from individual doctors
  • positive experiences with specific medical procedures such as eye exams
  • some staff described as friendly and helpful

Common complaints

  • concerns regarding billing and insurance transparency
  • perceived rudeness in administrative staff
  • dissatisfaction with institutional debt collection practices

"Patients have praised the clinic for its kind, understanding and informative doctors. Everyone working in the clinic was described as nice, friendly and did their best to make the patients comfortable."

Aggregated reviews for BayCare Clinic Green Bay

"They said they were in-network. My insurance said they are not due to paperwork on file. Their Admin wanted us to go ahead out of network regardless of cost."

Aggregated reviews for BayCare Clinic Green Bay

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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