I have had too many chiropractor colleagues have bad experiences with jobs overseas. Please, please, please get a work visa before entering ANY country. If you do not have this lined up before you begin working, you can end up in prison, or a slave to whomever you are working for. I have heard of several friends having income withheld, passports " held onto" , not being paid, and being booted from entire continents for working on a visitors visa.
Don't let this happen to you. There are people all over the world looking to take advantage of associates, both chiropractors and non-chiros.
Do your due diligence, and if they cannot set up all of the particulars before you go, then simply find something else.
Good luck fellow chiropractors!