I've watched a lot of medical dramas, but none really from Japan, so i was wondering if anyone has any recommendations. I've watched only Code Blue (with all its other seasons and movies) and Koi wa Tsuzuku yo Doko Made mo . I wouldn't mind if it came with some romance but none at all is very much welcome.

Thank you in advance!

Hoshi Furu Yoru ni - it's more romance than medical but does focus quite a bit on FL's work as a gynecologist.

Japanese Medical dramas usually don't come with romance unless it's tagged with one. If you don't mind some of the older dramas:  

Shiroi Kyoto 

Doctor X - the most famous series with many seasons

Iryu Team Medical Dragon

Team Batista no Eiko - more on medical negligence investigation 

DOCTORS Saikyou no Meii

Kounodori 

  • Kounodori +1 (Gynecology Surgery) - my fave medical Jdrama
  • Black Pean (Surgery)
  • Radiation House (Disgnostics)
  • Unnatural (Forensic)
  • Unsung Cinderella (Pharmacist)
  • Dr. DMAT (ER, much like Code Blue
  • Good Doctor (Surgery - remake of the korean drama with same title)
  • A Life (Surgery)
  • Tokyo MER (Emergency Medicine)
  • Hakui no Senshi! (Nurses)