Tel +31 (0)30 639 62 22
Mon-Fri 08:30 - 21:00
Sat 09.00 - 13:00Full contact details
Everything to do with your health insurance policy is well organised. You can count on that. But there may still be something you find unsatisfactory. In such cases you can ask ONVZ to reconsider a decision. We take every complaint seriously, and consider the handling of complaints to be a high-priority task. This enables us to further improve our services.
If you are dissatisfied with our service or a decision that we have made, please let us know by submitting a complaint or sending a letter to:
3990 GD Houten
We will handle your complaint within 30 days of receiving of your complaint form or letter. If, however, this should take longer, you will receive prompt notification of this.