elxf could be what you are looking for. It is open access and provider neutral.
(see the pitch deck at https://bizgraphic.ch/Blog/Reduce_people_dying_for_lack_of_knowledge_en....).
While originally conceived as a means to help health workers in LMICs to more easily access practical knowledge in a language they understand and to enable them to intervene when no higher qualified medical professional can be reached (aka task-shifting), it would lend itself also naturally for the distribution of your guidelines and other material. Works on-line and off-line on Android, Windows, Mac and Linux devices.
HIFA profile: John Miescher works with BizGraphic in Switzerland. miescher AT bizgraphic.ch