Ok, my findings:

1) Kind of website / service: A rather big medical center in Dusseldorf, Germany, led by various doctors, covering various illnesses / symptoms.

2) Wording: completely neutral and medical.

3) Symbols: While I agree that the symbol with the (almost) double heart looks like a pedo symbol, we have to keep in mind that doctors often use a "heart" to create their logos.

4) Login area: Dedicated to medical staff. Nothing unusual.

5) The only thing that is kind of unusual (but really isn't, as there are many other services like this) is this page: https://arzt-im-zentrum.de/inter-medical-service - it describes their service of treating patients from outside the European Union, complete with Visa arrangemenst, housing, catering, transport etc. The link of the page leads to https://doctor-germany.de/en/ which pops up in Russian language at first. This comes as no big surprise as the name of the owner of "Arzt im Zentrum" and many doctors working there have Russian sounding names.