The Gamma Knife Physician Team
 

A multidisciplinary team of medical specialists performs Gamma Knife surgery at the Sacred Heart Gamma Knife Center. The team includes:

• Neurosurgeons: doctors who specialize in surgery of the brain, spine, and nervous system

• Radiation oncologists: doctors who specialize in treating cancer with radiation therapy 

• Medical physicists: specialists who help design and set up new equipment and plan radiation treatments

• Oncology nurses: registered nurses who treat and care for cancer patients

The Gamma Knife Center team comprises various specialists from four local practices who are committed to working with referring physicians and their patients to provide exceptional medicine and compassionate care.

Practices represented by the team are:
 

David Fryefield, MD Radiation Oncologist Co-Medical Director, Gamma Knife Center Medical Director, Willamette Valley Cancer Center Board-Certified: Therapeutic Radiology Medical School: University of Cincinnati Residency: Radiation Oncology, University of California, San Francisco	Andrew J. Kokkino, MD Neurosurgeon Co-Medical Director, Gamma Knife Center Partner, Oregon Neurosurgery Specialists Board-Certified: Neurological Surgery  Medical School: Northwestern University Medical School in Chicago  Residency: Neurosurgery, University of Cincinnati Fellowship: Surgical Neurooncology, University of Cincinnati
Glenn L. Keiper, Jr., MD Neurosurgeon Founding Partner, Spine & Brain Center of Eugene  Board-Certified: Neurological Surgery  Medical School: University of Cincinnati College of Medicine Residency: Neurosurgery, University of Cincinnati	Stephen J. McGirr, MD Neurosurgeon Founding Partner, Oregon Neurosurgery Specialists  Board-Certified: Neurological Surgery Medical School: Baylor College of Medicine in Houston  Residency: Neurosurgery, Mayo Graduate School of Medicine, Rochester, Minnesota Fellowship: Stereotactic Neurosurgery, Centre Hospitalier Sainte-Anne in Paris
Merideth M. Wendland, MD Radiation Oncologist Partner, Willamette Valley Cancer Center  Medical School: University of Washington Residency: Radiation Oncology, Huntsman Cancer Hospital, University of Utah	Franz Josef St. George, MS, PhD Medical Physicist Chief Medical Physicist/Radiation Safety Officer, Willamette Valley Cancer Center Doctorate Degree: Radiological Sciences, University of Oklahoma
Merlin Beerman, MS, DABR Medical Physicist Willamette Valley Cancer Center Board-Certified: Therapeutic Radiological Physics Master’s Degree; Health Physics, Mid-Western State University, Wichita Falls, Texas

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