From the actual article: "The HWSM’s demand projections indicate that all of the demand growth is associated with changes in demographics (the aging of the population and longer life expectancies) and improved disease detection. Together, they suggest that many Americans will be living longer and may potentially require more critical care often provided in intensive care units (ICU). As a result, these projections are reporting a growth in demand for critical care physicians and nurse practitioners. While there is currently an adequate supply of critical care physicians and nurse practitioners to meet this demand growth, the model does not capture the likely shift in care delivery patterns that may occur."
Also, all HRSA workforce studies have the initial assumption that current demand = supply, which means this also undershoots the demand of CC docs from day 1.
Also, it's 2019, which means we're halfway to 2025 (since this study started in 2013). According to the projection, we should have already hit the oversupply point of CC physicians (halfway through gives us a projected supply of 4,500 in 2019 against the 2025 demand of 4,100), and yet there are still a zillion CC jobs you can find in New York City and LA, nevermind in places like suburban Oklahoma.