Environmental Impact of Ambulatory Telehealth Use by a Statewide University Health System During COVID-19

Several studies before the COVID-19 pandemic documented the positive impact of telehealth on patients' travel distance, time, out-of-pocket costs, and greenhouse gas emissions. The objective of this study was to calculate these outcomes following the increased use of ambulatory telehealth services within five large University of California (UC) health care systems during the COVID-19 pandemic. We analyzed retrospective ambulatory telehealth data from the five UC health care systems between March 1, 2020, and February 28, 2022. Travel distances and time saved were calculated using the round-trip distance a patient would have traveled for an in-person visit, while cost savings were calculated using Internal Revenue Services' (IRS) 2022 standard mileage reimbursement rates. In addition, we estimated the injuries and fatalities avoided using the national motor vehicle crash data. Greenhouse gas emissions were estimated using the 2021 national average vehicle emission rates. More than 3 million (n = 3,043,369) ambulatory telehealth encounters were included in the study. The total round-trip distance, travel time, and travel cost saved from these encounters were 53,664,391 miles, 1,788,813 h, and $33,540,244, respectively. These translated to 17.6 miles, 35.3 min, and $11.02 per encounter. By using telehealth, 42.4 crash-related injuries and 0.7 fatalities were avoided. The use of telehealth for ambulatory services during this time eliminated 21465.8 metric tons of carbon dioxide, 14.1 metric tons of total hydrocarbons, 212.3 metric tons of exhaust carbon monoxide, and 9.3 metric tons of exhaust nitrogen oxide emissions. Telehealth use for ambulatory services in a statewide academic Health System during COVID-19 had a positive impact on patient travel distance, time and costs, injuries and fatalities in motor vehicle accidents, and greenhouse gas emissions. These significant advantages of telehealth should be considered when planning future health services.