Dr. McWilliams is a board-certified practitioner in Family Practice and Phlebology, holding certification from the American Board of Venous and Lymphatic Medicine.
Dr. McWilliams' journey into vein disease care began during his residency, sparked by the limited treatment options for venous insufficiency patients. Throughout his years in Family Practice, his dedication to finding effective treatments for his venous disease patients has remained steadfast. He is an active member of the American Vein and Lymphatic Society and the American Academy of Family Physicians.
What Our Patients Are Saying
I have been a patient of Sean McWilliams for a number of years. I am thrilled that he has now opened a practice in Wheaton Illinois. It’s fresh and ...
Friendly staff, and go into depth everything that's going to be done, very knowledgeable as well, know what there talking about!
I had an outstanding experience at the clinic recently. From the moment I walked in, the staff was warm, professional, and attentive. After a very thorough ultrasound the doctors explained ...
Very friendly staff and Dr McWilliams truly cares about his patients!
EVERY ONE IS VERY KIND AND FRIENDLY PROFESSIONAL THEY MAKE YOU FEEL VERY WELCOME DR. MCWILLIAMS IS VERY NICE EXPLAINS EVERYTHING IN DETAIL IM HAVING PROCEDURES NEXT WEEK 😊 I TRULY ...
Latest News
From the Blog
Why a Vein Checkup Should Be on Your New Year’s Resolutions List
Varicose veins, which are strongly associated with chronic venous insufficiency, affect about one-third of Americans. However, many people ignore the signs of vein disease because the symptoms can creep up slowly. The month of January offers a fresh start, so it’s a great chance to make your vein health one of your New Year’s resolutions. The […]
Here’s Why You Should Have Vein Treatment Before Holiday Travel
The holiday season often means lots of time on your feet and hours spent sitting on planes or in cars.  Chronic venous insufficiency and varicose veins can worsen with prolonged sitting or inactivity, potentially leading to unhappy holidays. At McWilliams Vein Center in Naperville, IL, board-certified vein specialist Dr. Sean McWilliams reminds patients that treating vein disease before travel isn’t just about comfort—it’s about protecting your health. […]