https://www.mangago.me/read-manga/kimi_wa_kokan_no_mochigusare/
This is the only story I know similar to your description, but the doctor is the one being fked by his patients
this sounds a lot like love me doctor, ill drop a link below. hope this helped ヾ(❀╹◡╹)ノ~
https://www.mangago.me/read-manga/love_me_doctor/

so he is a prostate doctor he has his own clinic and you know he fvck every patient who comes his clinic? just soemthing like thissss