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  Meet our Gamma Knife team

Samuel Critides, MD

Dr. Samuel Critides earned his medical degree from the University of Medicine and Dentistry of New Jersey and completed his residency training in neurosurgery at Penn State Milton S. Hershey Medical Center. Following his chief resident year, he completed a fellowship in complex spinal surgery at the Cleveland Clinic Spine Institute in Cleveland, Ohio.

Dr. Critides has special interests in neurologic trauma surgery. He specializes in complex and revision spine surgery and the treatment of tumors. He has experience in minimally invasive spine surgery, motion preserving techniques like arthroplasty (disk replacement) and cranial surgery. Although some conditions like tumors or infections may need immediate treatment, Dr. Critides believes wherever possible that all forms of conservative treatment should be considered before surgery is recommended. He is trained in Gamma Knife stereotactic radiosurgery, a non-invasive way to perform brain surgery.

Dr. Critides served in the United States Navy for 20 years. After serving as a battalion surgeon with the Marines, he was selected for training as a neurosurgeon and then served the remainder of his career as a neurosurgeon. One of his greatest accomplishments was treating U.S. servicemen and women from 2005 2008 during the war in the Middle East while assigned to National Naval Center Bethesda.

After the 2010 Haiti earthquake, he served as the spine surgeon on the USNS Comfort, a seagoing medical treatment facility, caring for victims. In his spare time, Dr. Critides stays active with cross fit and running. He enjoys spending time with his wife, Maricarmen, and their four children.

Robert M. Fine, MD
Radiation Oncology

Robert M. Fine, MD is a new Gamma Knife radiation oncologist bringing 44 years of experience to Sacred Heart Hospital and the Sacred Heart Gamma Knife Center . Dr Fine attended the George Washington University School of Medicine, graduating in 1970. Dr. Fine began his career as a general surgeon, and served in the USAF at Holloman AFB with the 49th Tactical Fighter Wing for two years. After two years in private surgical practice in Oregon he retrained as a radiation oncologist at the Oregon Health Sciences Center in Portland, OR under William T Moss, MD, one of the fathers of radiation oncology, earning his board certification as he finished his residency.

He then spent time in private practice in Bismarck, ND where he was active with Mayo Clinic in the North Central Cancer Treatment Group, and sat on the Mayo Clinic neuro-oncology committee. He joined the Cleveland Clinic in Cleveland, where he was a senior attending, until being lured away to private practice in 2001 to Erie, PA. While at the Cleveland Clinic, Dr. Fine was trained in Gamma Knife and also took part in the Advanced Gamma Knife Course at the University of Virginia in 2005. Dr. Fine worked at the Regional Cancer Center in Erie, doing all the Gamma Knife cases until 2009 when he joined the Case Western Reserve University Hospital in Cleveland to primarily be a Gamma Knife physician.

Dr. Fine comes to Sacred Heart Hospital embracing the Hospital's mission to treat all patients in need, regardless of insurance coverage. He has performed over 450 Gamma Knife procedures and is looking forward to being an active member of the Sacred Heart Neurosciences and Gamma Knife Program.

Lyndsay Rothman, RN (left) and April Hile, RN (right)

Since it's inception, Lyndsay and April, Registered Nurses, have been working in the Gamma Knife Center to ensure the highest level of patient care. Their combined goals are patient safety and satisfaction. They both consider it an honor to work in the Gamma Knife Center and with an experienced multidisciplinary team.

If you have any questions or comments regarding the
Sacred Heart Gamma Knife Center,
please call us at (850) 416-4980
or email us at

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