John Stoddard Cancer Center Physicians | Trusted Providers of Care

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UnityPoint Health - John Stoddard Cancer Center

Meet Our Care Team

The John Stoddard Cancer Center is privileged to work with a variety of skilled physicians in a number of specialty areas including medical oncology, radiation oncology, surgical oncology, hematology, general surgery, gynecologic oncology, dermatology, radiology, pathology, urology, internal medicine and family medicine.

Andrew D. Nish, M.D, serves as the John Stoddard Cancer Center medical director. Dr. Nish is an interventional radiologist with Iowa Radiology. As medical director, Dr. Nish serves as an important link to the medical staff and works to facilitate discussions around quality, clinical trials, and patient care enhancements.  Meet Dr. Nish and learn how John Stoddard Cancer Center provides the best care for each patient. 

Radiation Oncologists

The John Stoddard Radiation Oncologists are located in the Stoddard Radiation Oncology Department - Robert Isaak, M.D., John Triantafyllos, M.D. and Arshin Sheybani, M.D. These physicians provide the most technologically advanced radiation oncology department in Iowa and continue to lead the way in cancer care.

Medical Oncologists

The Medical Oncology team specializes in the treatment of cancer, specifically chemotherapy.

Surgical Oncologists

The Surgical Oncology team specializes in the surgical treatment of over 14 types of cancers.

Interventional Radiologists

Working with Iowa Radiology, our team is able to offer complete diagnostic and interventional imaging services using the most advanced imaging techniques.


Iowa Pathology Associates provides cutting-edge diagnostic services including the most advanced molecular techniques to diagnose tumors and to help guide treatment decisions and tailor therapies to each individual patient. 

If you would like information or a physician referral, please call our cancer information line at (515) 241-4141, or toll-free (800) 246-8347.