Dr. Jeffrey Greenfield and Dr. Petra Klinge

Jeffrey Greenfield, MD, PhD is a board-certified neurosurgeon who specializes in pediatric neurosurgery. In addition, he sees certain adult patients with congenital neurosurgical conditions. Compassionate clinical care, research, and education are all central to his philosophy as a neurosurgeon and physician.

As creator and director of the Chiari CARE program, Dr. Greenfield has developed an international reputation caring for children and adults with Chiari malformation, tethered cord, syringomyelia, and other associated conditions such as craniocervical instability, CSF leaks, and hydrocephalus as part of a large multidisciplinary team. Dr. Greenfield is a strong proponent of the unique concept of transitional neurosurgery – caring for patients with specific conditions from childhood through adulthood.

Dr. Greenfield also directs the pediatric skull base surgery program, evaluating and removing tumors of the pituitary gland region and skull base such as craniopharyngiomas with minimally invasive endoscopic tools. Dr. Greenfield is also expert in utilizing minimally invasive ventricular endoscopy of the brain to treat tumors, hydrocephalus, and cysts within the ventricles, and intraoperative brain and spine mapping and imaging to care for children with benign and malignant tumors of the brain and spine.

Dr. Petra M. Klinge received her medical degree at the University in Kiel in 1993. After completeing her neurosurgical residency in Hanover Medical School, Germany, in 2002, Dr. Klinge held the position of Senior Physician and Assistant Professor of Neurosurgery at the International Neuroscience Institute in Hanover, Germany. Dr. Klinge joined the Neurosurgery Foundation and the Warren-Alpert Medical School at Brown University, Providence, Rhode Island, as an Attending Neurosurgeon in May 2009 and received the degree of Associate Professor of Neurosurgery at the Warren-Alpert Medical School at Brown University in December 2009.

Dr. Klinge is an internationally renowned clinician for diagnosis and neurosurgical treatment of patients with Hydrocephalus and Alzheimer dementia. She continues her research activities in collaboration with the Department of Clinic Neurosciences at Brown University, working on the unifying concept of dementias, in particular Alzheimer-related pathology in Hydrocephalus of aging patients. In addition to complex adult and pediatric hydrocephalus, her practice also includes skull-base surgery and patients with developmental Cerebrospinal fluid disorders such as spina bifida, Chiari malformation, as well as both benign and malignant tumors of the brain. As a trusted advisor and resource on hydrocephalus research, Dr. Klinge also speaks on the behalf of the Hydrocephalus Association (HA) at NIH-sponsored workshops and national and international conferences. Dr. Klinge’s scientific interests comprise the development of advanced techniques for diagnosing and treatment of dementia, experimental work to advance the understanding of normal aging, cerebrospinal fluid circulation and dementia, and development of novel biotechnical treatment approaches, including stem cell therapy for the treatment of cerebrospinal fluid disorders and neurodegenerative diseases.

Dr. Klinge was President of the International Society for Hydrocephalus and CSF Disorders from May 2010 to 2012, and is currently an active member of the American Association of Neurological Surgeons and the Congress of Neurological Surgeons.