I have a herniated disc l5/s1 and am being refered to a nuerosurgon. What should I expect next?

He will check you. And see if your case need surgical intervetion or not, the proceed with the treatment.
Evaluation. Surgeon should evaluate for symptoms warranting surgery (intractable leg pain, progressive loss of motor or sensory function in leg or inability to control bowel/bladder/ sexual function) and an MRI that confirms a nerve lesion in a compatible location. If indications are not present, medical management (injections, judicious rest, medications, physical therapy, and other therapies) is the norm.