Drs. Kathelijne van Nielen


I graduated in neurology at the University of Groningen in the year 2000. I’ve practiced within my profession with great enthusiasm ever since. Not only is it important to listen to the  patient, but asking the right questions, noticing the symptoms and deductive reasoning are equally important. Anatomical knowledge and knowledge of the functioning of the nervous system help me to determine the most probable cause of a complaint. Simple tools such as the reflex hammer and tuning fork are also of help. When the diagnosis is confirmed after a more thorough investigation, it feels as if a riddle/calculation has been solved. Every patient is different and needs tailored treatment or advice. Treatment options in neurology have expanded in the last decade. This way my job remains fascinating. I have a broad interest in neurology, but a special interest in some focus areas. Since 2016 I am a certified somnologist: expert in sleep medicine. I have worked in several hospitals, including university and top clinical hospitals. The Dutch branch of ACIBADEM, located in Amsterdam, is a relatively small centre: the more personal care that a small organization can provide greatly appeals to me. Besides, ACIBADEM is part of an international network.  I like the dynamic atmosphere that results from working in a rapidly developing organization . I can practise neurology in (almost) all its aspects, in a pleasant team of physicians and motivated staff.

Specialization / focus areas

Sleep medicine, headache, epilepsy, neuro-oncology and locomotor complaints


Dutch, English

Work experience 

2020 – present Consultant neurology/ Somnologist, ACIBADEM IMC, Amsterdam

2019 – 2020 Consultant neurology/ Somnologist, Netherlands Sleep Institute, Amersfoort

2012 – 2018      Consultant neurology, IJsselmeer hospitals, Lelystad and Dronten location

20 class="green"10 – 2011/p>    Consultant neurology , Sint Jansdal hospital, Harderwijk

2008 – 2009     Consultant neurology, St. Antonius Hospital, Nieuwegein

2004 – 2007     Consultant neurology, Deventer Hospital, Deventer

2001 – 2004      Consultant neurology, University Medical Centre, Utrecht

2001 Fellow neuro-oncology, Antoni van Leeuwenhoek hospital, Amsterdam


2016 Examination in Sleep Medicine (Somnology), European Sleep Research Society, Bologna

1995 – 2000 Registrar Neurology (specialization), University Hospital, Groningen

1994 – 1995 Senior house officer neurology, University Hospital, Groningen

1993 – 1994 Senior house officer neurology, St Elisabeth  Hospital, Tilburg

1984 – 1993 Medical school, University of Utrecht

1984 – 1990 Medical school, University of Groningen

Side activities

2018 Member of senior management, IJsselmeer hospitals

2012 – 2018 Working group OSAS/sleep-disorders, IJsselmeer hospitals. Chairman 2015-2018

2015 – 2018 Auditor IFMS (Individual Functioning Medical Specialists)

2012 – 2018 Member of ICU commission


  • Dutch Society of Neurology (NVN)
  • Dutch Society for Sleep- wake research (NSWO)
  • European Association for Neuro-Oncology (EANO)
  • Dutch League against Epilepsy
  • Dutch Headache society


Quality of Life in non-irradiated patients with low-grade gliomas.
KMB van Nielen, MC Visser, HGJ Krouwer
Journal of Neuro-Oncology, vol 21. No 1. 1994 (P101, abstract).

A case of Ollier’s disease associated with two intracerebral low-grade gliomas.
KMB van Nielen, BM de Jong. Clinical Neurology and Neurosurgery 1999; 101:106-110.

The diagnostic difficulties of meningeal and intracerebral plasma cell granulomas- presentation of three cases. Brandsma D, Jansen GH,  Spliet W, van  Nielen K, Taphoorn MJB. J. of Neurology 2003; 250: 1302-1306

Fracture of the femoral neck in bed caused by an epileptic seizure. Zijlmans GJ, Huijbregts JE, van Nielen KM. NTVG 2006; 150 (13): 747-9