Shuuchuu Chiryou Shitsu
English title: Internal Medicine
Japanese title: 羞中恥療室
Type: OVA
Source: Visual novel
Episodes: 2
Status: Finished Airing
Aired: Aug 13, 2004 to Nov 12, 2004
Duration: 30 min per ep
Rating: Rx - Hentai
Studios: Y.O.U.C
Producers: Digital Works
Licensors: Kitty Media
Genres: Hentai

Makoto Sugiura has studied his whole life to become a doctor. He's looking for revenge on the doctor with a scalpel scar across his left hand. It was that doctor who is responsible for his sister's death. After finally being assigned to the right hospital, Makoto finds that the entire staff is involved in something suspicious. He decides to sleep his way to the truth, squeezing a confession out of one nurse after another until he makes his way to the top. 

(Source: AniDB)