The National Council on Aging has a website that you can visit that will let you know. They have put together a comprehensive screening tool that allows you to find out about various federal, state and some local benefits for older adults. Their database contains over 1,450 different programs from every state in the US. They say that on average, there are 50-70 programs available to individuals per state.
The website can be found here at BenefitsCheckUp. They have a survey online that should take about 20-30 minutes and an additional one that is specific to pharmacy programs. The site also has a list of information you will need to fill out the forms to make the process even quicker.
After filling out the form and identifying programs a senior may be eligible to receive, they also provide a description of the programs, local contacts for additional information and materials to help successfully apply for each program.
With information on benefits that can help pay for rent, property tax, utilities, meals, prescriptions and more, I think it sounds like 30 minutes well spent!