ENT Clinic in Oak Creek, WI | (500 W Drexel Ave #300) - ADVENT
Otolaryngology (ENT) • Oak Creek, WI • Since 2004 • 1 (Oak Creek) locations
About
ADVENT is a national ENT medical practices network based in Milwaukee, WI, with 39 U.S. offices and a presence in Indonesia. They specialize in nasal blockage, sinus, snoring, and sleep apnea solutions through office-based treatments. Key details: - Type: Medical Practices partnership; founded 2004 - Headquarters: Milwaukee, WI; operates 39 U.S. clinics across multiple states - Notable location: Oak Creek, WI area (Oak Creek clinic directory item may include 500 W Drexel Ave #300 per user query) - Contact: info@adventknows.com; phone 888-938-3838 or local numbers - NAICS/SIC: 62, 621 / 80, 809 - Website: adventknows.com If you’re specifically seeking ENT services in Oak Creek, ADVENT likely operates a nearby clinic and can provide nasal/sinus, snoring, and sleep apnea evaluations and treatments. Consider calling to confirm exact Oak Creek address and available services at the 500 W Drexel Ave #300 location.
Clinic Type
Otolaryngology (ENT)
Address
500 W Drexel Ave #300
Phone
414-209-4943
referral@adventknows.com
Opening Hours
Mon-Fri 8:30am-4:30pm
Services Offered
Technology & Equipment
Insurance & Payment
In network with most insurances and referrals are usually not needed.
Not specified in webpage, In-network insurance, Self-pay, Credit/Debit
Languages Spoken
Pricing
Current Offers
New patient visit
FAQs
What to expect at your first visit?
An exam to understand the root issue; Breathing Triangle Evaluation; 30-minute new patient visit; personalized plan.
How long will my appointment be?
Your new patient appointment will be 30 minutes long. This visit is focused on finding the facts with an exam to ensure we understand the root of your issue. We'll discuss your goals and design a plan specific to you.
How is ADVENT different than other clinics?
One of the many reasons patients choose us is because we have a 99.7% referral rate. We also do something no other ENT clinic does: we give our patients a complete Breathing Triangle® Evaluation. This evaluation is unique to ADVENT and puts a 100% focus on your airway issues. This allows us to get to the root of your snoring or sinus issue. The Breathing Triangle® evaluation has helped over 31,000 ADVENT patients breathe and sleep better.
Do you accept my insurance?
We are in-network with most insurance plans. View the full list of insurance for your state here >
Awards & Accreditations
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- Birdeye: 4.6/5 (290 reviews)
- BBB: 1.2/5 (customer review rating shown) (35 customer reviews (average of 35))
Patients praise
- High overall star rating and many reviews on Birdeye
- Some reviews describe the staff/clinicians as knowledgeable and chair-side effective
- ENT/specialty focus on ear-nose-throat and related conditions is described by the clinic listing
Common complaints
- Complaints about high or unexpected costs/billing (e.g., large bills for initial visit, procedures not covered, surprise charges)
- Allegations of unnecessary procedures/poor communication about costs and what services involve
- Very low BBB customer review rating and negative customer reviews (e.g., 'scam'/'waste' sentiment)
"“Advent doesn't know... For the initial 30 minute visit, they charged my insurance company $959... I was told I had mild sleep apnea... tried a couple of overprices mouthpieces.”"
— BBB customer review excerpts"“You will NEVER know the cost of anything... received various bills... upwards of almost $500... none of which were covered by insurance... DO NOT RECOMMEND if you want honest and upfront communication and reasonable expectations of cost.”"
— LocalityBiz review excerpts"“My boyfriend came here for help with sleep apnea... nasal endoscopy was conducted, what they didn't do was tell us that would cost $700.”"
— Yelp review excerptSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
Information sourced from the clinic's website as of July 11, 2026.
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