Se for elegível para o VWP, então Sim: veja em Turismo no Departamento de Estado dos EUA Página do Programa de Isenção de Vistos , bem como Vistos de Visitante: Negócios e Prazer flyer (ênfase adicionada):
Pleasure, Tourism, Medical Treatment - Visitor Visas (B-2) If the purpose of the planned travel is recreational in nature, including tourism, visiting friends or relatives, rest, or is related to medical treatment… then a visitor visa (B-2) would be the appropriate type of visa for the travel.…
Travelers coming to the United States for tourism or business (B-1 or B-2 category visa) purposes for 90 days or less from qualified countries* may be eligible to travel without a visa if they meet the Visa Waiver Program (VWP) requirements.