I think this is a good place to start looking but you can also just look online. If you are paying out of pocket then you definitely don’t need a referral. If you have EPS or one of the insurance companies here then I have no idea if you need a referral or not. My wife used a neurologist in San Vicente (near the airport in Rionegro). If you need I can look for her contact info but it might or be close enough to you