Yes you can dispute the amount. If there is a lien signed with the doctor, then the attorney cannot just give you the money. You need to express your concern with the attorney and if you cannot reach a resolution the attorney can interplead (give) the money to the court and you and the doctor can go before the Court to decide the appropriate amount
The best way to "pay" your doctor back is let let others know your satisfaction. Your lawyer sounds like he/she is properly representing you.
Personal injury cases only; I'm good at it; you be the Judge! All information provided is for informational and educational purposes only. No attorney client relationship has been formed or should be inferred. Please speak with a local and qualified attorney. I truly wish you and those close to you all the best. Jeff www.nyelderinjurylaw.com