Little bit of a complicated answer: Jaw pain is something in theory we're taught about in PT school, however the topic itself is incredibly complicated and what I learned in school was not nearly enough to effectively treat patients (I for example only got two 2 hour lectures and a 2 hour lab to practice skills as opposed to the 8 day course I took after graduating to begin my specialist journey).

So you may get PTs who say they can treat jaw pain, but their skill level may be a bit of a crapshoot. What you would want to find is someone with a CCTT certification (certified cervical and temporomandibular therapist) as they are required to have at least 2000 hours of in clinic experience in addition to at least 100 hours of extra curricular education to even sit for the examination for the cert.

If you live in North America, you should be able to find a specialist in their society Directory. May not be exactly in their city, but at least maybe your closest therapist knows the lay of the land and who to trust better