Bringing this over from the One Ton Family WATN discussion.
My personal/professional involvement with criminal law was at least one geological age ago. But. If the guy didn't forge the scrips, or steal the drugs, or sell the drugs, he's not likely to be on law enforcement radar. In my experience, people get in criminal trouble for (1) forging scrips or committing big time fraud like fraudulent IDs to obtain/fill scrips; (2) stealing the drugs including paying with bad checks or stolen credit cards; or (3) selling the drugs. And, sadly, they tended to be addicts themselves.
I'm sure there are exceptions and Assanti may have violated some laws, but AFAIK the law gives doctors a pretty wide berth to write prescriptions. I don't think many prosecutors want to get into a legal fight with a doctor over whether they shoulda written a certain scrip; they have better use for their time and resources. (Docs do get prosecuted for running prescription mills or doing big time insurance fraud, examples of the bigger fish that prosecutors have to fry, than a guy playing the system to get himself a lotta drugs.)
This has reminded me of a case from I swear, 40 years ago, that I had as a public defender. My client was a 20-something black man, charged with illegal possession of narcotics. Because? He was at home recovering from a badly broken leg, when the cops executed a search warrant on the place (not aimed at him but someone else there). The cops apparently came up empty on the object(s) of their search, but seized his Tylenol 3 pills, which had been issued to him by the city hospital when he was discharged with his leg in a cast. That was the narcotic drug he was charged with illegally possessing!!! (ETA: I can't remember but I think they may have actually seized it in the prescription bottle. SMH. Anyway he had a copy of the prescription, was in a cast, and that bottle was the only narcotic in the house.)
Now, our DA's office was generally more enlightened than that (which is one reason why the case sticks in my memory), but IMO the cops were so frustrated that they hadn't caught their fish, they must have figured they could get somewhere by laying a felony charge on this young man, and the DA played along. Yes, I got the case dismissed pretty fast. Hell, the judge was so conservative it wasn't funny, but he dismissed the case although I could see it pained him to go against the DA. Heh. It was such a textbook case of racial/socioeconomic prejudice (and cop frustration) in action that it's remained in my memory all this time.