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.
The maximum term of appointment is 90 days. 1  If you agree on a term of more than 60 days: 2  either party may end the appointment. 3  you (or your agent) must give a minimum of 30 daysâ written notice. 4  the appointment must remain in effect for at least 60 days.