Best Doctors in Germany

Michael Nießen is a radiation therapy specialist at the clinic’s MVZ Gamma Knife Center Krefeld, working there since 2024 and joining the team on 01.01.2024. He completed radiation therapy specialist training at University Hospital Essen and in an MVZ for radiation therapy in Leverkusen after neurology work at Uniklinikum Bonn. In March 2024, he attended the Leksell Gamma Knife Clinical Introduction course in Prague at Nemocnice Na Homolce Hospital.

M. Nießen is a specialist in Radiation Therapy at the clinic’s MVZ Gamma Knife Center Krefeld, working there since 2024 and joining the team as a physician colleague on 01.01.2024. Before that, he trained in radiation therapy at University Hospital Essen and an MVZ in Leverkusen after neurology work at Uniklinikum Bonn. In March 2024, he attended the Leksell Gamma Knife Clinical Introduction course in Prague at Nemocnice Na Homolce Hospital.

Gerhard Horstmann is a neurosurgeon at the clinic who co-founded the Gamma Knife Zentrum and served as Managing Director (Geschäftsführer) of MVZ Gamma Knife GmbH. He played a major role in establishing Gamma Knife treatment in Germany. His professional work ended with retirement on 31.12.2023.

D. J. W. Skutta is the clinic’s Head of Radiation Therapy (Leiter der Strahlentherapie) at MVZ Gamma Knife Center Krefeld. He helped establish extracranial stereotactic radiotherapy—starting with the center’s own linear accelerator (LINAC) and later expanding it in cooperation with Helios Klinikum Krefeld. After many years of work at the Gamma Knife Zentrum, he was released into retirement at the end of May.

Otto Bundschuh is a neurosurgery specialist at the clinic’s MVZ Gamma Knife Center Hanover and has served as Medical Director (Ärztlicher Leiter) since 2019. He has been conducting Gamma Knife radiosurgery since 2000 and led the Hanover Gamma Knife Center from 2008 to 2018. In June 2023, he presented at the DGNC annual meeting in Stuttgart on radiosurgery options for head tumors.

Götz Lütjens is a neurosurgeon at the clinic’s MVZ Gamma Knife Zentrum Hannover, working with radiosurgery since 2019. He has been a neurosurgery specialist since 2012 and trained in stereotaxis and functional neurosurgery during earlier hospital roles. In 2024, he deepened his functional radiosurgery expertise through a dedicated course in Marseille led by Prof. J. Régis and Prof. R. Martinez.

Frank Sonnenschein is a neurosurgery specialist at the clinic and has led the MVZ Gamma Knife Zentrum Krefeld as Medical Director (Ärztlicher Leiter) since 1 July 2023. He has practiced Gamma Knife radiosurgery at the clinic since 2017, building on 17 years at the City of Krefeld Hospital / HELIOS Hospital Krefeld. In June 2022, he attended the ISRS World Congress in Milan to follow new developments in Gamma Knife treatments.

Albertus T. C. J. van Eck is a neurosurgeon at the clinic’s Gamma Knife Zentrum Krefeld, with Gamma Knife radiosurgery experience dating back to the center’s early years. He was involved in establishing Gamma Knife treatment in Germany together with Dr. Gerhard Horstmann. After decades at the clinic, he retired at the end of March 2023.

PD Dr. Nils Beisemann is an operative knee specialist at the clinic in Frankfurt, scheduled to join the team starting 01.01.2027. Lumedis highlights his focus on arthrofibrosis of the knee. For patients who need a clear surgical pathway for knee problems, the clinic also pairs his future operative role with conservative knee expertise in the same practice.

Axel Lust is a tendon specialist at the clinic in Frankfurt, responsible for operative care of tendon ruptures such as patellar tendon rupture and Achilles tendon rupture. Lumedis describes follow-up after tendon repair using 3D pressure-measurement supported gait and running analysis and tailored exercises. He also treats distal biceps tendon ruptures with both conservative and operative experience.

Dr. Franziska Zwecker is a Fachärztin for Orthopedics and Traumatology and an osteopathy doctor at the clinic in Frankfurt. Lumedis lists her as a specialist for the elbow and hand. Her conservative toolkit includes osteopathy and acupuncture—specifically Triggerakupunktur—used for orthopaedic pain and tendon-related inflammation.

Dr. Bela Braag is a foot specialist and conservative foot specialist at the clinic in Frankfurt. Lumedis highlights his role in treating syndesmosis ligament tears (Syndesmosebandriss / Syndesmosenabriss) with individualized therapy. He also manages toe deformities such as hammer toes and claw toes using conservative, non-operative approaches.

Dr. Nicolas Gumpert is an Orthopedist with a focus on Sportorthopädie at the clinic in Frankfurt and a Facharzt for Orthopedics. He is the founder of Lumedis and is repeatedly recognized with Focus seals, including “Recommended Orthopedist in Frankfurt 2025.” For Achilles tendon and foot-related problems, the clinic describes specialized conservative treatment planning and patient-near medical communication.

Dr. Jannik Ole Ashauer is an Achilles tendon specialist and Sportorthopädie orthopaedic specialist at the clinic in Frankfurt. He has been working at Lumedis since 1 June 2025. For patients with chronic Achilles tendon damage or stalled progress, the clinic uses 3D pressure-supported gait and running analysis to tailor exercises to the individual case.

PD Dr. Elke Maurer is a spine and osteoporosis specialist at the clinic in Frankfurt. She is listed as a conservative specialist for Arthrofibrosis and works as a Fachärztin for Orthopedics and Traumatology with training in the BGU in Tübingen. Patients who want non-surgical management for spine and bone-health problems can book with her team at Lumedis.

F. Budach is a specialist at RadioOnkologie im Vosspalais, with leadership experience that includes serving as Clinic Director of the Charité Clinic for Radiation Oncology until 2022. He was President of DEGRO and President of the Congress, and his clinical focus includes therapy for head and neck tumors, sarcomas, and breast carcinomas. His training includes diagnostic radiology and radiation therapy at University Hospital Essen (1980-1985) and specialist certification in radiation therapy in 1985.

Themistoklis Stavrakis, M.D. is Chief Physician at the clinic in Berlin and a specialist in Plastic and Aesthetic Surgery with a strong focus on modern minimally invasive treatment concepts. He is internationally active as a speaker and trainer for modern injection techniques and serves as a Faculty Member of the Allergan Medical Institute (AMI). In practice, he delivers targeted aesthetic results with Botulinum toxin (Botox®) for crows feet, smoker’s lines, Masseter Botox, and Platysma Botox®, as well as hyaluronic acid and hybrid fillers including Hyalase® and HArmonyCa®.