How To Treat Numbness In Legs Due To Prolapse Disc Problem?

my father has prolapse disc problem and he feels numbness in his legs.He has been asked to undergo surgery for this as thers no other cure. We wanted to consult a doctor before we decide or take any such action. Which doctor to consult orthosurgeon or neurosurgeon.Can I get named of gud doctors in Pune Mumbai or CMC. Thanksyou.