I would like to unreservedly recommend the Clearing Solution and Mr. S. Kottek, attorney at law, from the Stephan law firm, who personally looked after me. There you get a gigantic know-how at your disposal, with whose help you are steered through the complete change process. The change itself from PKV to GKV took me only a few weeks and was 100% stress-free.
Great praise to the entire team for the trusting and reliable cooperation. What is perhaps still to be mentioned particularly, one does not have to make a pre-payment or a part payment. You only get an invoice when the switch has been completed.