Do you think doctors should be held responsible for their patients overdosing?

If someone takes 20 oxycodone or a bunch of xanax and dies or very injured, can we blame the prescribing doctor? Let’s say the patient does have trouble with pain, or anxiety, or whatever.

Or, the doctor prescribes for a month, but somehow the patients does have some stash saved up, and eventually is taking too much on some days, a dangerous amount. And, combining drugs. More than what the doctor prescribes to be taken at a time.

Is the patient in the end responsible for these types of drugs and what they are taking?

Also, what if the patient becomes addicted, is that the doctor’s fault? If he has given proper warnings of the adfictive properties of a drug?