John R. Iglar, M.D.
Expert Evaluations for Exceptional Outcomes


Dr. John Iglar is a diagnostic radiologist for Radiology Associates of Appleton. In this role, he determines direction of radiological care options by assessing new technologies and equipment with input from other Radiology Associates physicians.

His special interests in general radiology include:
• Percutaneous biopsies and drainages
• PET imaging
• Gastrointestinal radiology

Dr. Iglar is one of seven physicians at Radiology Associates who perform Positron Emission Tomography (PET) imaging. PET is often more sensitive than conventional diagnostic imaging, distinguishing tumors as cancerous or noncancerous and detecting cancer that has spread to other areas of the body. PET scans are used most often to detect cancer and to determine the effectiveness of therapy by characterizing biochemical changes in the cancer. Guidelines are continually expanding for this technology, including lymphomas, breast cancer, lung nodules, colon cancer and others.

Dr. Iglar received his medical degree from the Medical College of Wisconsin and completed his residency in diagnostic radiology at the University of Minnesota Hospital and Clinics. He is board certified in radiology by the American College of Radiology and is a member of the Radiological Society of North America and Alpha Omega Alpha. He is a long standing board member of Radiology Associates of Appleton, also serving as past President.

Dr. Iglar’s practice sites include:
• ThedaCare Appleton Medical Center
• ThedaCare Shawano Medical Center
• ThedaCare Physicians Family Physicians
(North Appleton, Memorial, Midway, Kimberly)
• ThedaCare Physicians Pediatrics (Appleton North)
• Primary Care Associates
• ThedaCare Berlin Hospital
• ThedaCare Wild Rose Hospital
• Shawano Clinic