I'm so glad to hear that you have an appointment scheduled later this month, @oldsuzanne55. Yes, a Parkinson's specialist would be a good idea. This type of specialist would be called a Movement Disorder Specialist. It is a specific type of neurologist who specializes in movement disorders, Parkinson's being one of many movement disorders.
It sounds like a change in his meds (either the dosage or the frequency) would be helpful at this point, but the doctor can make that decision.