Serving Appleton, Waupaca and the Fox Cities since 1993.

Find Real Allergy Relief at Allergy & Asthma Associates

If you have an allergy, we can help you. Our board-certified allergists provide expert allergy testing and treatment to children, adults and the elderly at our convenient Appleton and Waupaca clinics. Our doctors and staff have over 50 years of experience combined treating allergies. There is no need to continue to suffer through sneezing, dripping, stuffiness, congestion, coughing or wheezing.

The longest allergy practice in the Fox Valley

Connected to primary care providers

50+ years of experience

Allergy and Asthma

Breathe Easy Again

Millions of people experience the uncomfortable symptoms of seasonal allergies and asthma every year.  Others experience the life-threatening allergic reactions of food allergies or insect bites that could even induce chronic asthma. Here at Allergy & Asthma Associates, we work with individuals to greatly reduce these symptoms and more, to improve quality of life and reduce the recurrence of health issues that result from allergies, chronic lung disease or asthma.

Asthma Treatment

State-of-the-art testing methods and technology to help patients and to address the symptoms and severity of asthma. Treatment options allow you to breathe easier and to live your life to the fullest degree possible.

Rhinitus Treatment

Nasal allergies are very common and people may have mild to severe symptoms which often times interferes with school, work or daily living. There are a variety of therapies to manage and treat these problems.


Also known as allergy shots, immunotherapy remains the gold standard for treating and many times completely eliminating your allergies. They can diminish the frequency of sinus infections and greatly help control or reduce asthma flares.

Best Allergists in Fox Valley

Thorough Treatment

Our doctors listen to patient concerns while creating a personalized treatment plan. Ensuring we provide the quality care our patients expect from our combined 50-years of experience.

Accommodating Services

Receiving treatment is hassle free, with short wait times and fast treatment. Many treatments can be completed during your lunch break. Get in, get out! No waiting around all day for your appointment.

Commpassionate Care

Our doctors are passionate about their work, knowledgeable in their field, and caring about our patients’ wellbeing. Reducing your allergy symptoms in a comfortable and knowledgeable environment is our top priority.

Complete and Total Allergy and Asthma Care From the Experts

We Treat:

  • Asthma
  • Stinging Insects
  • Hives
  • Sinusitis
  • Food Allergies
  • Allergy Shots
  • Eczema
  • Rhinitis

Most Major Insurances Accepted:

  • Aetna
  • Anthem Blue Cross Blue Shield
  • Aris/WPS
  • Common Ground
  • Health Partners (Robin)
  • Humana
  • Lucent (Formerly Cypress)
  • Network Health Plan (Select Plans)
  • Quarts
  • Security Health (Select Plans)
  • Tri Care
  • United Healthcare
  • VA CNN
  • WEA Trust

Among others…please contact your insurances to find out more.

Meet the Allergists

Dr. Daniel Wendelborn

Dr. Dan Wendelborn, a Wisconsin native, attended University of Wisconsin-Madison and graduated from UW Medical School in 1980. He has also contributed to publications in the field of prostaglandins.

Dr. Karen Konz

Dr. Karen Konz has been in private practice since 1995 when she joined Dr. Wendelborn. She earned her D.O. (Doctor of Osteopathy) from the Chicago College of Osteopathic Medicine in 1990.

What Our Patients Are Saying…

Dr Konz and Dr Wendelborn are amazing doctors. The kind of doctors that really take the time to listen and help. I have never been to a doctor who made me feel more like I was important. The staff always goes above and beyond to help with insurance and billing and they are always friendly and accommodating. I always recommend allergy and asthma associates to all my friends and family.

– Patrick Sweeney

Dr. Wendelborn is excellent. He is knowledgeable, kind, professional and listens very well. He knows what he is talking about, and seems genuinely interested in resolving allergy issues. He handled my 10-month-old daughter with the utmost care. I am grateful. Thank you Dr. Wendelborn. The staff there is awesome, too.

– AW

Dr. Wendel born solved my asthma problem after years of seeing other asthma centers. Would recommend him to anyone suffering with asthma.

– Karen Geiger

friendly and compassionate allergy and asthma treatment in appleton wisconsin

Looking to Refer A Patient?

Partner Providers

We currently work with many providers in the Fox Valley and Northeast Wisconsin, including: Primary Care Associates, Kaukauna Clinic, Mosaic Health, Derm Associates, ThedaCare Pediatrics…and more!

How to Refer

To refer a patient to a specialist at Allergy & Asthma, please contact us by phone (920) 739-5213 or by fax: (920) 739-1444.

Self-referred patients are accepted on a case-by-case basis; please call us for help with this process.

Provider Resources

To assist you in educating your patients about allergies, we have created educational resources you can download and print out for free:

What Is Allergic Rhinitis

What to expect from allergy testing, the testing process, and different treatment options.

What To Expect From Allergy Testing

Learn everything you need to know about its causes, symptoms, and treatments

Food Allergy Statistics

The more information you have, the better you can figure out your food intolerances

Most Common Food Allergies

These 8 Foods cause 90% of all allergic reactions