ENT Clinic in Wausau | Hear Well. Breathe Well. Be Well.
Allergy & Asthma • Wausau, WI • Since 1969 • 2 (Wausau and Stevens Point) locations
About
ENT & Allergy Associates, S.C. is a privately held ENT, allergy, immunology, and asthma care provider based in Wausau, Wisconsin (founded 1969). It offers comprehensive care under one roof for both adults and children, including ENT, allergy/immunology, asthma treatment, audiology, and hearing aids. The practice operates four offices in north-central Wisconsin, with the Wausau location serving as the headquarters. No referral is required to see their specialists. Highlights include a collaborative, patient-centered approach and multiple satellite clinics to improve access. Contact: 715-847-2021 or 1-800-897-3307.
Clinic Type
Allergy & Asthma
Address
512 S. 28th Avenue, Wausau, WI 54401
Phone
715-847-2021
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Opening Hours
Monday - Friday 8:00 a.m. - 4:30 p.m.
Website
Services Offered
Team
Insurance & Payment
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Payment options page indicated in extras, CareCredit
Languages Spoken
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FAQs
What services are offered for allergy and asthma?
Allergy & Asthma Services include Allergic Rhinitis/Hay Fever, Asthma, Sinusitis, Indoor & Outdoor Allergies, Food & Drug Allergies, Stinging Insect Allergies, Hives & Eczema, Recurrent Infections.
Allergy Test Scheduled?
Please stop taking antihistamines 5-7 days prior to your first appointment. Continue to take asthma medications as prescribed. Bring all of your medications to your appointment. Plan for your appointment to last 60-90 minutes.
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Toprated Business (aggregated): 3.3/5 (102)
- Healthgrades (Dr. Leonhard): 3.0/5 (2)
- Vitals (Dr. Nalwa): 4.7/5 (6)
Patients praise
- Some patients report smooth and friendly experiences
- Appreciation for knowledgeable and caring providers who take time to answer questions
- Accessibility of same-day walk-in care services
- Comprehensive diagnostic and treatment offerings under one roof
Common complaints
- Concerns regarding billing practices and costs
- Reports of poor bedside manner or feeling rushed during consultations
- Dissatisfaction with staff communication and scheduling processes
- Mixed outcomes on surgical procedures
"The facility seems like a really nice and well kept place... Was charged $450 for a 10 minute conversion... Its crazy how broken our Healthcare system is and how they can get away with robbery."
— Toprated Business aggregate reviews"Both myself and my daughter had surgery with Dr. Leonhard. Both failed. Mine was worse after he was done."
— Healthgrades (Dr. Leonhard)"I usually have to wait to see Dr. Nalwa. I have come to understand this is because he takes time with his patients and does not rush out of the room. He stays to answer all of our questions and really cares about me as a patient."
— Vitals (Dr. Sarvi Nalwa)Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Blake Voss, AuD - Audiology - Private Practice Provider — Oct 15, 2025
- Emily Lohr, AuD - Audiology - Private Practice Provider — Aug 15, 2025
- ENT & Allergy Associates marks its return to Rhinelander with a brand-new specialty care clinic - ENT & Allergy Associates — Aug 21, 2025
- ENT & Allergy Associates welcomes Lauren Marsicek, PA-C, to clinics in Wausau and Stevens Point - ENT & Allergy Associates — Jul 14, 2025
- Dr. Jens Brown joins partnership group of ENT & Allergy Associates - ENT & Allergy Associates — Apr 2, 2026
Information sourced from the clinic's website as of July 11, 2026.
More allergy & asthma clinics in Wausau
Summary: Allergy, Asthma & Sinus Center S.C. is a privately owned medical practice in southeastern Wisconsin, led by board-certified allergists Dr. Gary C. Steven and Dr. Donald A. Bukstein. Founded in 2003 and based in Greenfield, WI, the center provides comprehensive allergy, asthma, and sinus care for children and adults, with services including allergy testing, nitric oxide testing, asthma education, exercise challenges, fiberoptic rhinoscopy, and scuba diving fitness evaluations. They operate at four U.S. locations, including Greenfield (HQ) and Mount Pleasant, and run daily pollen counting to improve community pollen data. The practice emphasizes patient and community support through affiliations like the American Lung Association–Wisconsin. If your search is specifically for Dr. Gary C. Steven in Wausau, note that the primary locations are in southeastern Wisconsin (Greenfield and Mount Pleasant) rather than Wausau.
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