Toyota 100 Cars for Good Facebook users decided which 100 nonprofits took home the Toyota of their choice. Your votes helped Toyota give 100 vehicles to nonprofits all over the country. Each day, Facebook users decided which nonprofit could do the most good with a new vehicle.
PAR stands for Participating Provider (medical billing). Suggest new definition. This definition appears very frequently and is found in the following Acronym Finder categories: 1  Science, medicine, engineering, etc.2  Business, finance, etc.AR stands for Participating Provider (medical billing). Suggest new definition. This definition appears very frequently and is found in the following Acronym Finder categories: 1  Science, medicine, engineering, etc. 2  Business, finance, etc.
In the medical community, PRN is an abbreviated term that stands for pro re nata. This means as needed. For nurses, there are multiple ways this term can be used. The main one refers to medication. Where a patient takes their medication as needed instead of on a schedule.