Being turned away by one huisarts (GP) practice after another is a standard newcomer experience in the busier postcodes, and it usually reads as bad luck rather than a capacity problem with a formal route around it. Until a practice registers you, most of the rest of the system stays out of reach.
It's not you — GP capacity is genuinely tight in a lot of postcodes right now, especially in and around the bigger cities and anywhere with fast population growth. Some practices operate a strict patiëntenstop (patient freeze) and aren't accepting anyone; others will only take patients living within roughly a 15-minute travel time of the practice, so being technically nearby on a map doesn't guarantee eligibility if you're on the wrong side of an internal boundary. The system leans on postcode-based catchment partly because Dutch huisarts (GP) care is built around continuity with one practice, not walk-in convenience. What actually helps: your zorgverzekeraar (health insurer) has a zorgplicht (duty of care) to make sure you can actually access a GP, not just sell you a policy that nominally includes one. Call their customer service line, tell them specifically that you've been refused, and forward any rejection emails or letters — insurers vary in how proactively they help, but pushing them to actually mediate with local practices, rather than just handing you a list to call yourself, is within their obligation and often gets faster results than cold-calling practices on your own. If that stalls too, your gemeente (municipality) or regional GGD (public health service) sometimes maintains its own list of practices with space, worth checking directly since online directories tend to lag reality.