In addition to
She also already has a collection of pieces that might be relevant, e.g. on Nootropics. She also writes here: https://srconstantin.wordpress.com/about/ (only sometimes on medical topics). And folks created a crowdfunded campaign to have her produce a report on STIs.
Scott Alexander Siskind has recently started writing about psychiatric conditions and treatments
Rob Wiblin listed these (hence the Australian picks : ) I'd be very happy to add to it if there are additional suggestions.
Crazy Meds for mental health treatment: http://www.crazy-meds.org/
UpToDate for treating diseases: http://uptodate.com/ [also suggested by Jim Babcock]
Therapeutic Guidelines for treating diseases: https://www.tg.org.au/
Red Book for screening for disease: https://www.racgp.org.au/.../goodpractice/20171-2/red-book/