my father died almost a year ago from a overdose he was having promblems with his breathing his been to the doctor office while being drunk

If you have a case it is going to be very difficult to prove. Your father clearly was a candidate for pain medication if he was going to see a pain management specialist. While doctors do have to be mindful of the dangers of prescribing narcotics, arguing that a physician should have foreseen the possibility that your father would abuse the drugs is just a difficult argument to make.  You should contact a local medical malpractice attorney. Medical malpractice attorneys work on a contingent fee basis, which means they only get paid out of the proceeds of the lawsuit if you win. They provide free initial consultations. Sometimes an attorney will ask you to pay a "retainer" to cover the some of the expenses of a case, this is an issue that varies from office to office.  Click here for an article that discusses the three main questions I ask when deciding whether to investigate a potential medical malpractice case. Click here for an article that explains what you can expect when filing a medical malpractice case.