ANDERSON, Ind. (AP) _ The Indiana Medical Licensing Board has suspended an Anderson doctor whom court records link to the drug-related deaths of 31 people.

The board Wednesday suspended the license of 83-year-old Dr. Frank Campbell. The Herald Bulletin reports the board also fined Campbell $500 on each of the six counts of violating physician regulations filed by the state. Campbell can seek reinstatement in a year.

Campbell was medical director of the Madison County Community Health Center until the Drug Enforcement Administration questioned him last year over allowing two physician assistants to prescribe controlled substances using prescriptions he pre-signed.

Campbell said he trusted the assistants and pre-signed prescriptions for expediency.

An Indiana Medicaid Fraud Control Unit investigator submitted a court affidavit saying 31 of Campbell's patients died drug-related deaths since January 2009.