Skip to main content

Important Update Regarding UnitedHealthcare (UHC) Coverage

As of October 1, 2025, Madison Medical Affiliates is considered out-of-network with all UnitedHealthcare insurance plans. This change follows the expiration of the contract between Ascension WI & UHC.

We understand how concerning and frustrating this news may be. UHC covers many of our patients and their families, including our own staff. Please know that this development does not change our commitment to providing you with compassionate, high-quality care.

At this time, patients with UHC may experience higher out-of-pocket costs when receiving care at Madison Medical. We encourage you to:

  • Review your insurance benefits to understand how out-of-network coverage works under your specific plan.
  • Visit UnitedHealthcare’s website or call the customer service number on your insurance card for more information about your options.
  • Reach out to our office with questions - we will do our best to guide you and provide support.

While Ascension WI & UHC may continue discussions, we must move forward under this out-of-network status until further notice. We will keep you updated on any changes as soon as we learn more.

For more information, you can visit the official negotiation pages for each organization:

Thank you for your patience, understanding, and trust in Madison Medical Affiliates. We are grateful for the opportunity to care for you and your family.

Important Update Regarding UnitedHealthcare (UHC) Coverage Learn More
Craig Siverhus

Craig Siverhus, M.D.

Dr. Craig Siverhus completed his bachelor's degree at the University of Wisconsin - Madison. He attended medical school at the Medical College of Wisconsin, where he also completed his internship and residency in General Surgery. He went on to complete a fellowship in Vascular Surgery at St. Louis University in St. Louis, Missouri. Dr. Siverhus is Board Certified by the National Board of Medical Examiners and the American Board of Surgery. He has a special interest in Bariatric Surgery as well as Advanced Laparoscopy and Vascular Reconstruction Surgery. Dr. Siverhus is currently an Assistant Clinical Professor of Surgery at the Medical College of Wisconsin. He is also the Director of Columbia St. Mary's Vascular Lab and Chief of Surgery at Columbia Campus. Dr. Siverhus is committed to providing patients with comprehensive care and leading-edge surgical options.

Office Locations

WTMC Surgery - Dr. Siverhus

2350 N. Lake Drive
Suite 304
Milwaukee, WI 53211
Appointments: (414)-298-7222

Seton Surgery - Dr. Siverhus

13133 N. Port Washington Road
Suite 224
Mequon, WI 53097
Appointments: (414)-298-7222

Additional Surgery Physicians

Schedule An Appointment

Get started on the road to healing by scheduling an appointment with our Craig Siverhus, M.D. Call for an appointment or complete our contact form.

Water Tower Medical Commons (414) 298-7222

Seton Professional Building (414) 298-7222

Contact Us