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120 W. 22nd Street
Oak Brook, Illinois 60523
90 W. 86th Avenue
Merrillville, Indiana 46410
Fort Wayne, Indiana
7836 W. Jefferson Blvd
Fort Wayne, IN 46804
Billing or insurance questions:
For Illinois patients: 866-785-3627
For Fort Wayne region patients: 866-785-3627
For Northwest Indiana patients: 866-288-6264
If you have an emergency, go to your nearest hospital Emergency Room (ER).
If your call is not an emergency, but you need a doctor, call your physician’s office and the on-call physician will be paged.
You can send a secure message directly to the doctor’s office through your Patient Portal account. Get more information here.
Leave a message:
If you want to leave a message outside of business hours, call your physician’s office and the answering service will answer. Your message will be retrieved the next business day.
Find a doctor or dialysis center:
NANI Corporate Office, Oak Brook, Illinois
Note: This is not a clinic location