Are there 1.9 millions or 2.35 million or some other big number of medical marijuana patients?

The question in the title of this post was prompted by this new article reporting that New Frontier Data has determined that, in the medical marijuana arena, the “total U.S. patient population (not including CBD states) is 1,914,767.”  This accounting led me to check out the latest patient head-count at Marijuana Policy Project, and this MPP page reports an estimate of “all state-legal patients” to be 2,354,403.   Hmmm.