The ONZ Staff

Experienced and young – our specialists represent contemporary medicine. The combined expertise of the Orthopedic-Neurosugery Center (ONZ) team covers a range that is unique in the entire Ruhr area.

Team of Senior Consultants

 Dr. Bernd Illerhaus
 Dr. Wolfram Steens
 Dr. Bernd Ferkmann
 Dr. Bernard Neuhaus
 Dr. Maximilian Timpte
 Dr. Guido Ostermann
 Dr. Thomas Bierstedt
 Dr. Jan Ahrens

Dr. Bernd Illerhaus

Dr. Bernd Illerhaus is a specialist in neurosurgery and an expert for the conservative and surgical treatment of degenerative and traumatic spinal disorders.

The special interests and activities focus on minimally invasive treatment of dege...

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Dr. Wolfram Steens

Dr. med Wolfram Steens, born 17.07.1969, studied medicine at the Westfälische-Wilhelms University in Münster. Following its approval in 1997, he first began his medical training at St. Johannis in Duisburg-Homberg as medical resident (AiP) in tr...

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Dr. Bernd Ferkmann

Dr. Bernd Ferkmann was born on April 20, 1952 in Asheberg, near Muenster. He studied medicine in Munster, Frankfurt and Aachen. At the University Hospital in Aachen and in the hospital Marienhohe in Würselen Prof. Dr. Hopf and Prof. Dr.Staudte we...

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Dr. Bernard Neuhaus

Dr. Bernard Neuhaus began his study of medicine at the University of Saarland in Homburg Saar. He continued his studies in Bochum and Münster. This was followed by surgical training at St. Christopher Hospital in Werne. His orthopedic training Dr...

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Dr. Maximilian Timpte

Dr. Maximilian Timpte began the study of medicine in 1989 at the University of Essen. As a student, Dr. Timpte collected first surgical experience in the Australian community Preston Melbourne Hospital, where he completed an internship as part of ...

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Dr. Guido Ostermann

Dr. Guido Ostermann is a specialist in neurosurgery and an expert for the conservative, minimally invasive and surgical treatment of chronic pain of the neck lower back.He performs about 350 surgeries per year. He is a recognized expert in key-hol...

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Dr. Thomas Bierstedt

The special interests and activities focus on the motion-preserving surgical treatment of cervical and lumbar spine in particular.

Dr. Bierstedt annually conducts approximately 350-400 spinal surgery varying degrees of difficulty, about hal...

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Dr. Jan Ahrens