Kagen Allergy Clinics | Appleton, Oshkosh, Green Bay, Fond du Lac ...
Allergy and Immunology • Appleton, WI • Multiple locations in Wisconsin (Appleton, Oshkosh, Green Bay, Fond du Lac) locations
About
Kagen Allergy Clinic is a Wisconsin-based allergy and asthma care provider with three offices, including Appleton and Fond du Lac. They offer in-office and video telehealth allergy/asthma testing, plus resources for patients. Key details: - Locations: Fond du Lac (headquarters), Appleton, plus another Wisconsin office (Oshkosh/Green Bay area not explicitly listed as separate sites in the provided details) - Services: In-office testing, video office visits, allergy and asthma management - Contact: Multiple local phone numbers; main presence at kagenallergy.com - Contact/summary points: Active clinic with a small team (4 employees), serves primarily the United States (majority in US), focused on allergy, asthma, and related care.
Clinic Type
Allergy and Immunology
Address
1st location details not explicitly provided on page; multiple Wisconsin locations including Appleton, Oshkosh, Green Bay, Fond du Lac
Phone
+18002559355
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Opening Hours
Not published — contact the clinic to confirm hours.
Telehealth
Video office visits (telemedicine) available
Services Offered
Team
Insurance & Payment
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Languages Spoken
FAQs
What services are offered?
Video office visits, in-office allergy and asthma testing, and related allergy/immunology care.
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Vitals: 3.4 out of 5 (8 ratings)
- Healthgrades: 3.1 out of 5 (16 ratings)
- Yelp: 3.0 out of 5 (6 reviews)
Patients praise
- Reputation for clinical intelligence or expertise
- Helpful with pediatric patients
- Accurate diagnosis capabilities
Common complaints
- Long wait times and office scheduling issues
- Billing and insurance transparency concerns
- Perceived lack of professionalism or poor communication from staff/doctor
"My experience with Dr. Kagan was extremely disappointing. My son and I arrived for a 10:00 a.m. appointment and waited 50 minutes past the scheduled time without being seen. ... Instead, he questioned and criticized me for leaving."
— Vitals / Healthgrades patient review"They really want that payment locked down. Be prepared to sign over everything they need to sue you . It was incredibly hard and insulting trying to get any cost possibilities out of them."
— Yelp patient review"Dr. Kagen is one of the smartest doctors around. He was wonderful with my children and made an accurate diagnosis."
— Yelp patient reviewSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Pollen levels soar in Northeast Wisconsin: Kagen Allergy Clinic — Jun 3, 2026
- Spring Will Come - And So Will Sneezes: How to Tell What's Illness and What's Allergies this Season | Bellin Health — Apr 9, 2026
- Why allergy season in Northeast Wisconsin has been starting earlier and lasting longer — Mar 11, 2026
- Allergy season begins in northeast Wisconsin amid temp swings | WVBO-FM — Mar 12, 2026
- Emplify Health by Bellin Welcomes Local Couple for Allergy Reaction Training | Seehafer News — Jul 8, 2026
Information sourced from the clinic's website as of July 11, 2026.
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