Riverside County and San Bernardino County to the north form this metro area. Like many such metro areas in the Southwest, it extends far into uninhabited desert areas, in this case east through the Mojave Desert to the Nevada/Arizona border. Larger than nine U.S. states, it is often referred to as the Inland Empire.
I agree with tchrist that the word doctor in doctor appointment is a noun (attributive noun I believe), although the definition of an attributive noun is a noun used as an adjective, so maybe it's just semantics at some point.
Term appointments may be made in any increments as long as the appointment is for more than one year and no more than four years. If, for example, the initial term appointment is made for 13 months, the appointment may be extended up to the 4-year limit in as many increments as the agency chooses.