Netherlands Medical Providers

The following medical providers have experience treating families with hereditary colon cancer syndromes. ​We cannot make recommendations about specific physicians, attest to the credentials of these providers, nor do we evaluate their competency to practice. Furthermore, their inclusion on this website, or any referral to a provider from the Hereditary Colon Cancer Foundation, should not be considered an endorsement of any type. 


If you do not see​ providers ​near you, we can still help. Click​ HERE for names of​ genetic​ counselors who offer phone and web-based counseling. Or, if you give us some information about yourself and/or your family member(s), and tell us where you are located, we will do our best to find someone near you. Click HERE to contact us.

If you are a ​provider, experienced in treating patients with Hereditary Colon Cancer Syndromes, click ​HERE to register.


Academic Medical Center 020-566 9111

Frank Kallenberg, MD, Gastroenterologist



Liselot Van Hest, Clinical Geneticist



University Medical Center Groningen 31 (50) 361 61 61

Rolf Sijmons, MD, Clinical Geneticist



Leiden University Medical Centre (071) 526 91 11

Sanne Ten Broeke, MD, PhD Student, Clinical Genetics

Johan den Dunnen, PhD, Clinical Geneticist

Frederik Hes, MD, Clinical Geneticist

Alexandra Langers, MD, PhD. Gastroenterologist

Maartje Nielsen, MD, Clinical Geneticist

Carli Tops, PhD, Clinical Laboratory Geneticist

Hans Vasen, MD, Gastroenterologist



Radboud University Nymegen Medical Centre (024) 361 88 00

Tanya Bisseling, Gastroenterologist

Nicoline Hoogerbrugge, Prof. dr., Medical Specialist

Marjolijnn Ligtenberg, PhD, Clinical Molecular Geneticist

Yasmijn Van Herwaarden, MD, PhD Student