"As needed medical and scientific experts for pharmaceutical and healthcare advertising" Founded by scientists that think like creatives - we can integrate seamlessly with your current team. PRN EXPERTS provides "on-call" hourly or contract based medical directors/writers/strategists to top pharma marketing agencies to help bolster scientific support for new or existing business. While we work mainly with advertising agencies, we also support small pharma and biotech companies who don't have the budget for a full time medical direction/writing staff.