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About the Doctors


The following is a list of some of our CyberKnife radiosurgery doctors that actively participate on the CyberKnife Patient Support Group "Ask the Doctors" message board. These doctors have volunteered their time to answer questions from patients through the website. You may also contact them privately. To view a profile, click on the name.

  1. Steven D. Chang, M.D.
  2. Clinton A. Medbery, III, M.D.
  3. William S. Rosenberg, M.D.
  4. Jerome J. Spunberg, M.D.
Steven D. Chang, M.D.


Steven D. Chang, M.D.Steven D. Chang, M.D.
Assistant Professor of Neurosurgery

Director of Cyberknife Radiosurgery
Stanford University

Curriculum Vitae (CV)

Patient appointments:
(650) 723-7093 Neurosurgery Clinic

Dr. Chang specializes in the treatment of vascular disorders and tumors of the brain and spinal cord. He is the Neurosurgery Director of Cyberknife Radiosurgery. His cerebrovascular work focuses on the use of surgery and radiosurgery for cerebral aneurysms and vascular malformations (AVMs). He also specializes in surgical and radiosurgical (Cyberknife) treatment of brain tumors such as acoustic neuromas (fractionated radiosurgery), meningiomas, brain metastases, and pituitary tumors. He is one of the few physicians in the world today specializing in radiosurgery treatment of tumors of the spine. His research focuses on the development of new methods of utilizing stereotactic radiosurgery and Cyberknife ™ for the treatment of tumors of the brain and spine. Dr. Chang has also published numerous articles, abstracts and book chapters on the subject of cerebrovascular disease and radiosurgery treatment of brain and spine tumors.

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Clinton A. Medbery, III, M.D.


Clinton A. Medbery, III, M.D.Clinton A. Medbery, III, M.D.
Medical Director
St. Anthony Hospital Cyberknife Center
Oklahoma City, Oklahoma


Patient appointments:
Phone: (405) 272-7311

Fax: (405) 236-3888

Dr. Medbery is board certified in both medical oncology and radiation oncology. He specializes in radiosurgery of both intracranial and body cancers and benign tumors. Research interests include the use of the Cyberknife as a non-invasive and rapid treatment of prostate cancer and lung cancer. He also is an expert in the radiosurgical treatment of metastatic disease in the brain, with an experience of several hundred treated cases.

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William S. Rosenberg, M.D.


William Rosenberg, M.D.William S. Rosenberg, M.D.
Neurosurgeon &
Medical Director of the Menorah Medical Center CyberKnife

Midwest Neurosurgery Associates
6420 Prospect Street, Suite T411
Kansas City, MO 64132

Patient appointments:
(816) 642-8655

Dr. Rosenberg is board certified in neurosurgery and specializes in complex spinal surgery and neuro-oncology. He has extensive experience in both clinical and basic research and has led spinal surgery programs at major academic centers. He left academic neurosurgery to focus more on patient care, but is now concentrating on the innovative use of CyberKnife radiosurgery in the belief that this truly enabling technology will have a significant positive impact on the lives of his patients.

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Jerome J. Spunberg, M.D.


Jerome J. Spunberg, M.D.Jerome J. Spunberg, M.D., FACR, FACRO
Radiation Oncology Institute &
Cyberknife Center of Palm Beach

10335 N. Military Trail, Suite C
Palm Beach Gardens, FL 33410


Phone: (561) 624-1717
Fax: (561) 296-4270

Dr. Spunberg is a board certified radiation oncologist practicing in Palm Beach County, Florida for over twenty years. He is a fellow of both the American College of Radiology and the American College of Radiation Oncologist. He graduated from Harvard Medical School and completed his residency training in radiation oncology at Columbia-Presbyterian Medical Center in New York. Particular interests include the use of Cyberknife in prostate and lung cancer, as well as intracranial and spinal tumors. He is especially excited about combining treatment with the Cyberknife with other therapeutic options such as IMRT and chemotherapy.

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