There's a place on Sukhumvit that does excellent work, the only "downside" is the only accept insurance jobs, no pay yourself type work. If that fits your situation, they are directly across for King Power near the Pattaya Klang intersection.
https://www.google.com/maps/@12.929492,100.900139,3a,75y,154.14h,103.4t/data=!3m6!1e1!3m4!1sVD7oia4OiEslm5RF0-qceA!2e0!7i16384!8i8192?entry=ttu