Hi @nnurse, You’re looking for a prosthodontist in the Jacksonville who is knowledgable in the fabrication and management of a palatial obturator.
I did a little research and several names popped up.
One stood out with the most positive ratings for Beaches Dentistry Prosthodontics and Orthodontics. They’re located not far from the Mayo Clinic and are in Jacksonville Beach.
The info is below:

https://www.beachesdentistry. beachesdentistry com/oral-and-maxillofacial-prosthetics
https://www.beachesdentistry.com/jacksonville-beach-office
324 3rd Ave N
Jacksonville Beach, FL 32250. 904-242-6588

Really, any good prosthodontist would be able to make an appliance for you. In our general dental practice, we often worked with patients who had cleft palates or other dental anomalies where we needed to construct obturators. Do you have a family dentist in Jacksonville? You could inquire there or ask for a recommendation if the Beaches Dentistry doesn’t feel like a good fit.