Young FTM – Testosterone?

Patient: I wasn’t sure exactly what category to but this in but this seemed like the right one. I am 14 years old and biologically female, but I want to get on testosterone. I’m not entirely sure what this process involves. I know I’d have to get a letter from my therapist, that won’t be a problem, but I’m just not sure where I should actually start. Do I need to schedule an appointment with an endocrinologist as my first step?