J.K.
My 19 month old only says mama and dada. He has been in early intervention for a couple months for speech, and will soon start OT for feeding and motor planning issues. I highly recommend! My older son had OT and Developmental Therapy with EI, and everyone we have worked with has been great! I love that I never have to leave the house for his therapy! Saves a lot of time, and with winter here, it's awesome!
There is always the chance that you could get someone not so great, but you can always ask for a change. The waiting list for speech is probably 3 months. Get him on the list now!