OPA has partnered with Victoria Legal Aid (VLA) to improve the way it distributes publications and ensure you get the information you need sooner. To order. Only members have access to OPA's top-quality insurance programs. each program — or to obtain an enrollment, a claim, or a change form — select the type. Forms required for participation in the B Discount Drug Pricing Program. Home > Program Requirements still use PDF Change forms | Entities must register online, but certain forms must be downloaded, signed and submitted to OPA.