Lexi Thiel, PA-C

Physician Assistant

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clinic accepting new patients
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In-network for most insurance
Lexi Thiel, PA-C

Nice to Meet You

Hi! I’m Lexi, your Physician Assistant here at ADVENT. Let me tell you a bit about myself—I’m originally from Wisconsin, growing up in the Fox Cities area, but I’ve settled down in Milwaukee. I chose to specialize in breathing and sleep issues because I know firsthand how crucial the ability to breathe is for overall health, energy levels, and quality of life.

When you come to see me, my priority is to make sure you feel understood, informed about your health condition, confident in your treatment options, and supported throughout your journey to better health. Building trusting relationships with my patients is the most rewarding part of my job, and I love seeing the progress they make over time. I’m here to help guide you to that point too!

I’m excited to join you on your journey at ADVENT, and I can’t wait to see where it takes us!

How I Can Help

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"I went to ENT's for years and they did very little to help my sinus issues. They just prescribed nasal sprays for years, one after another. Advent was great. All appointments were very detailed and informative. They spend a lot of time looking into my sinus problems. My breathing is so much better but not perfect after my procedure. I will take the improvement they gave me any day over the ENT doctors I saw before."
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This place has literally changed my life. I have been a lifelong sufferer of sinus problems. Through the years, I have tried multiple over the counter remedies, seen several ENT specialists, and had a majorly invasive sinus surgery. None of it has ever really helped, and the surgery made it worse. I went to ADVENT...and I'm breathing more clearly than I ever thought possible. They truly delivered significant results. I am and will forever be grateful for the major improvement in the quality of my life.
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This is a 1-stop-shop for issues dealing with those miserable nose, sinus and throat and breathing issues with lots of solutions and info to make an informed choice. Don’t waste your money on "a" specialist when it's all here under one roof and very reasonable cost wise. All we know is to go to Sleep centers that will slap miserable CPAP machines on you which only help with sleep disorders. Allergists give you sprays. Helpful....but ADVENT addresses several areas of sinus-nose-throat concerns. My Family member was given a Balloon Sinoplasty because sinuses were in bad shape from all previous nonsense and chronic drowning in mucus. He back at work next day with mild discomfort for 2 days. Major improvements! Was told if this didnt help as much as hoped, other things could be assessed. Very nice staff. Terrific follow up aftercare and support all along the way. very professional.
Lexi Thiel, PA-C

My Qualifications

National Certification:
National Commission on Certification of Physician Assistants

Master of Physician Assistant Studies, Marquette University, Milwaukee, Wisconsin

Biology & Healthcare Science, University of Wisconsin Oshkosh, Oshkosh, Wisconsin

American Academy of Physician Assistants
Society of Physician Assistants in Otolaryngology & Head and Neck Surgery
Wisconsin Academy of Physician Assistants


For most insurance, we're in-network and you don't need a referral.

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    We'll confirm your insurance coverage
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    We'll answer any questions you have about your benefits
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    We'll break down cost, as set by your policy, before any procedures
Lexi Thiel, PA-C

More About Me

Outside of work, I have a passion for volunteering in Central America, where I occasionally serve as a medical provider. I’m also an avid hiker, volleyball player, and yogi—I love staying active. And of course, I cherish spending time with my friends and family.

Sinus infections? Snoring? Sleep apnea?

Take the Breathing Triangle® Quiz to find Out how your nose ranks:
The Breathing Triangle Character
Taken by more than 38,192 people!