Questions linger about Prince's choice of local doctor

MINNEAPOLIS (AP) — If Prince was seeking help for a problem with prescription drugs, it would make sense for him to turn to a California addiction specialist known for new ideas on treatment.

The official who spoke to AP said investigators are seeking to identify every doctor and pharmacy that may have supplied the singer prescription drugs, including online sources, and that the search involves examining computer drives from Prince's home.

The Star Tribune, citing a source with knowledge of the investigation, previously reported that Prince had been receiving treatment for withdrawal symptoms from a doctor who previously worked with Prince's longtime friend Kirk Johnson.

According to the Minnesota Board of Medical Practice website, Schulenberg has not been subjected to any disciplinary or corrective action in Minnesota or other states.

Johnson, Prince's friend, is mentioned in the search warrant documents as having been interviewed by investigators and telling them of medical treatment that Prince received for an unspecified illness in 2014 or 2015 at the Two Twelve Medical Center in Chaska.

According to the search warrant revealed Tuesday, Schulenberg had seen Prince on April 7 and on April 20, the day before he died.

Schulenberg's name doesn't appear on a list of Minnesota doctors authorized to treat opioid dependency with the buprenorphine, according to a database maintained by the federal Substance Abuse and Mental Health Services Administration.