Danielle Zwartjens


Danielle is an expert in the field of health care, and she has extensive experience in disciplinary law, dealing with calamities, issues concerning the Health and Youth Care Inspectorate (IGJ), medical criminal law, poor performance cases and (medical) liability.

In addition, Danielle advises on patients’ rights and other health care topics.

Danielle represents a broad range of clients, including boards of directors of health care institutions, MSBs (medical specialists’ companies), individual physicians and other health care professionals, both BIG-registered (at the public register for Professions in Individual Health Care) and unregistered.

Her approach is straightforward, and she is fully dedicated to her clients, who can contact her anytime for advice.

Before Danielle joined Legaltree, she practiced law with other firms, where she also exclusively handled Dutch and international health law cases.


Danielle advises and litigates in the field of health law, including:

  • Disciplinary law
  • Dealing with calamities
  • IGJ-cases (Health and Youth Care Inspectorate)
  • Medical criminal law
  • Collaborative disputes and poor performance cases
  • Medical liability/malpractice
  • Patients’ rights
Work experience

Danielle has been an attorney since 2003.

2003-2005: Pels Rijcken & Droogleever Fortuijn in The Hague, Health Law Practice Group
2005-2010: Beer advocaten in Amsterdam, also initiator Beer Professional Training
2010-2019: KBS advocaten in Utrecht, Substantive Health Law Practice Group
2019-2022: Nysingh in Utrecht, Health Law Practice Group

She is a partner at Legaltree since November 2022.

Memberships & ancillary positions


  • Association of Health Law [Vereniging voor Gezondheidsrecht (VGR)]
  • 2005-present: Association of Personal Injury Lawyers (LSA)

Ancillary positions

  • Danielle lectures frequently at conferences and seminars and is experienced in teaching in-house courses.
  • Danielle is co-author of the Chronicle of Disciplinary Law (Journal of Health Law) and the Quarterly Update Health Law in Ars Aequi magazine.

In addition:

  • 2014-present: coordinator mandatory peer review LSA
  • 2019-present: lecturer Medilex, topic Legal Incapacity, co-author KwartaalSignaal Gezondheidsrecht, Ars Aequi
  • 2021-present: lecturer Estate Planning Expert, the Living Will


  • 2003-present: Association of Health Law (VGR)
  • 2005-present: Association of Personal Injury Lawyers (LSA)
  • Leiden University - Civil law / health law (2003, cum laude)
  • Grotius specialization course in personal injury (2007-2008)
  • Grotius specialization course in health law (2020-2021)