In the Philippines, you generally don’t need a referral to see an orthodontist. You can contact the clinic and directly book an appointment or even just book online, just like you would do with any other specialist. This means you have the freedom to choose an orthodontist who feels like a good fit for you.
A referral would be helpful in case your current dentist may have a recommendation and refer you to an orthodontist with a great reputation and experience treating cases similar to yours.