MD PA stands for Medical Doctor, Professional Association. The Professional Association designation is a legal term used to describe a separate legal entity, much like an incorporated business.
Uber launches Scheduled Rides, so you can (finally) book a car in advance. users will be able to schedule a pickup anywhere from 30 minutes to 30 days in advance.
Passengers will be able to schedule a ride up to 30 days in advance, a reversal of Uber's long-held attitude that it is an on-demand service. An Uber car in San Francisco in May 2015. Passengers will soon be able to pre-schedule rides.