In a medical emergency, taking a taxi to the nearest hospital—taxi drivers usually know where to go—can sometimes be quicker than waiting for an ambulance. If you do call for an ambulance, it will take you to the nearest hospital—possibly a public one that may well look run-down; don't worry, though, as the medical attention will be excellent. Alternatively you can call a private hospital directly.
For theft, wallet loss, small road accidents, and minor emergencies, contact the nearest police station. Expect all dealings with the police to be a lengthy, bureaucratic business—it's probably only worth bothering if you need the report for insurance claims.
American Embassy (Av. Colombia 4300, Palermo, Buenos Aires, Buenos Aires. 11/5777-4354; 11/5777-4873 after hours. .)
General Emergency Contacts
Ambulance & Medical Emergencies (107.)
All Buenos Aires Emergency Services (911.)