I live in central Florida near Orlando, and there is a lot here in the way of help with any psychiatric problem, including DID and all kinds of therapy. My T isn't trained specifically in DID but is doing a great job with mine anyway.

There are many different payment options beside medicaid that might be better, as Medicaid is the bottom rung and so restrictive: There's the sliding scale some private therapists and private clinics show on their web sites.I got a chart that shows $35 a session is the appropriate sliding scale charge if your income is less than $30,000 annually. Of course, there's Obama Care, and Medicare plans if you're older. I'm not with an Obama plan, but I understand it has many different plans and exceptions for those with limited income.
The main thing is your own personal financial situation. Many therapists and clinics have a set cost, but there's a lot of flexibility if you call them and have an intake appointment. It sometimes says on their web site.

I know all this because I changed therapists several times, been here a long time, and always worried my T will ditch me (part of my illness). I get on the computer and look up everything available(yek, ad nausium) They do often call back and usually answer an email.
Best place to start, I think, when you have financial problems, is with the county mental health clinic, where they have a financial review to see what kind of payment plan you qualify for, and sometimes can be $5, or even without any charge, depending.