In December 2016, the World Health Organization recommended scale-up of HIV assisted partner services (APSs) as a strategy to increase the identification and testing of partners of persons with HIV . APSs offer persons with HIV assistance to confidentially notify their sexual and needle-sharing partners of their exposure and link the partners to testing and treatment. Randomized controlled trials have shown that APSs increase HIV testing and case finding  and are cost-effective . APSs are scalable in routine practice, but routine APS programs have typically demonstrated lower HIV case finding than was observed in randomized controlled trials . At least in part, the low case finding observed with APSs in most settings reflects the small number of sexual and needle-sharing partners named by index cases.