OBJECTIVES: There is substantial attention on value in health care. The value of a health technology may vary depending on the perspective used. We reviewed and analyzed willingness to pay (WTP) studies to understand the perspectives used for eliciting the value of health care. METHODS: We searched PubMed for English-language articles related to WTP for health technologies in the US published from 2006 through 2016. We extracted key features of studies, including the type of health technologies, disease category, and importantly, methodological differences including perspectives, elicitation methods, and mode of administration. RESULTS: Of 4,810 articles identified by our search, 104 relevant WTP studies were included. Thirty-three focused on a drug or treatment, 18 investigated diagnostics, and 53 investigated others including technologies, vaccines, and health programs/policies. Seventeen looked at infectious diseases, 16 focused on oncology, and 71 investigated other conditions including neurology and musculoskeletal diseases. Fifty-two studies surveyed patients, 13 included family members, and 25 studies used the general population to assess WTP out-of-pocket for a health intervention from an individual perspective. Seventeen studies used payment card method, 11 used discrete choice, and 14 used bidding game approach. Ninety-five studies estimated WTP from the individual perspective and nine from the societal perspective. CONCLUSIONS: There has been substantial variation in studies with respect to the type of technologies and diseases assessed and respondent characteristics. Almost all studies assessed technologies from the individual perspective. As perspectives influence the perceived value of the technologies, it is important to conduct WTP from both the societal and the individual perspectives.