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Cyber Security Incident

Madison Medical Affiliates is currently experiencing a business interruption associated with the cyber security incident at Ascension Health. As a result, access to electronic medical records and patient schedules have been impacted. Despite these limitations, Madison Medical remains open at all locations to meet your health care needs. If you are visiting our clinics during this interruption, please bring a list of your current medications. 

We are working diligently to ensure this disruption has minimal impact on our clinic operations. We will share more information as it becomes available. Thank you for your patience and thank you for entrusting Madison Medical with your care. 

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John Sanidas

John Sanidas, M.D.

Dr. John Sanidas earned his degree in medicine from the Medical College of Wisconsin in 1995 where he also completed his residency in Internal Medicine. Board Certified in Internal Medicine, he joined the staff of Madison Medical Affiliates in 1998.

Office Locations

Seton G18

13133 N. Port Washington Road
Suite G18
Mequon, WI 53097
Appointments: (262)-243-5000

Additional Internal Medicine Physicians

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

Seton Professional Building (262) 243-5000

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