You're probably familiar with Teladoc Health (NYSE: TDOC) thanks to its massive pandemic-era scale-up, during which its telehealth service became a lifeline for many people who needed medical care but couldn't make it to their doctors. In short, its telehealth clinicians provide on-demand primary care, behavioral health, and even some modalities of chronic care and specialty care, all for a recurring membership fee that's often paid by a patient's employer or their health insurance. Then, Teladoc could drive profitable top-line growth by expanding its membership base, or by offering new services to subscribers for additional costs, thereby increasing the amount of money it makes from each person that's covered.