Hi S.,
I am a speech-language pathologist (SLP) in Coppell so I have some knowledge on programs. There are lots of choices out there. Baylor, of course, has a wonderful reputation. Typically, you get two 30 minute sessions a week, based on severity and they take most insurances, with little to no co-pay from the parents (5-15 per visit). Easter Seals I don't know much about, but there are also some in home services that you could try. Therapy 2000 (based out of Dallas) has PT, OT, and SLP's come to your home to treat them in the "natural" environment and also train the parents as well. They also typically do 30-45 minute sessions twice a week and take most insurances. You can check them out at http://www.therapy-2000.com/careers/dallas.html
Then there is ECI (Early Childhood Intervention). They also come to your home and have PTs, SLPs, and OTs. It is through the state and I think payment is minimal or they do insurance. Either way it is often a preferred route and doctors usually provide this info when telling parents that their child might need services. http://www.dars.state.tx.us/ecis/index.shtml
The home service ones are great, because sometimes it can be difficult to load up your child to take them to all the different therapies that are needed. All these companies offer assessment and therapy services.
You can also go the private speech therapy route. Some private speech-language pathologists take insurance and others require parents to pay and to submit the invoice to their insurance themselves. Some have offices and some do in-home therapy and services (that's what I do).
I think since it is your first time getting your child assessed, the best route is ECI or Baylor based on their reputations. I hope this helps! Good Luck with your little one and if you need additional information or advice, feel free to contact me! Thanks!
~A. E., M.A. CCC-SLP