Meet Our Team

Dr. Sperduto

Dr. Sperduto is board certified in Radiation Oncology.  He completed his training at Duke University (BA, MD MAPP) and the National Cancer Institute (Radiation Oncology).  He maintains a busy clinical practice at Waconia Radiation Therapy Center, with a special interest in brain tumors and stereotactic radiosurgery.  He remains very active in research.  He has received numerous awards for leadership and research, some of which are listed below.

  1. Society of Neuro-Oncology Award for Excellence in Clinical Research
  2. American Cancer Society Lane Adams Award for Excellence in Caring and Promoting Improved Quality of Life In Persons with Cancer
  3. Hubert H. Humphrey Fellow
  4. Henry Luce Scholar in Asia
  5. Jones-Guerrero Scholar in Research, Duke Medical School
He is Director of Stereotactic Radiosurgery at Methodist Hospital and Co-Director of the Gamma Knife Center at the University of Minnesota.  He has treated thousands of patients with stereotactic radiosurgery for brain tumors.

During his career, Dr. Sperduto has treated over 2800 patients with stereotactic radiosurgery, including the prior technique, a modified linear accelerator, and now the Gamma Knife.  In the first year of operation, Dr. Sperduto has treated over 160 patients using the Gamma Knife.  Dr. Sperduto has, by far, the most experience in stereotactic radiosurgery of any physician using the center and among the most experience of any physician in the nation and around the world.  He is active in research and is a reviewer of scientific publications in the field.

Dr. Diaz

Dr. Richard Diaz is a board certified radiation oncologist.  He currently practices at The Radiation Therapy Center at Fairview Southdale.  Dr. Diaz, a Minneapolis native, graduated from St. Mary’s University in Winona, Minnesota.  Following graduation from Mayo Medical School in Rochester, MN, he completed a rotating internship at the University of California in San Francisco.  Dr. Diaz completed residency training in Radiation Oncology at the University of California in San Francisco where he also served as Chief Resident and was an American Cancer Society Clinical Fellow.

Dr. Diaz joined the University of Michigan Medical Center faculty as an assistant professor in Radiation Oncology where he participated as an investigator in the Cooperative Ocular Melanoma Study.  He also served as an investigator on several NIH funded grants.  Dr. Diaz is currently a member of the clinical faculty of the University of Minnesota and is active in the training of both residents and radiation therapy technology students.

Dr. Diaz has also been active in the Metro Minnesota Community Clinical Oncology Program (CCOP).

Dr. Diaz has special interests in neuro-oncology / brain tumor patients and also in radioactive implant treatment for patients with choroidal melanoma tumors. Dr. Diaz received his certification in Gamma Knife Radiosurgery at the University of Pittsburgh Medical Center in June of 2005.

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