Coaching insurance vs malpractice insurance

Hi! I’m a trained as a physician but have not been doing medical work for many years, instead I’ve been coaching people about weight loss (no medicine prescriptions, just talking on the phone). My question is whether I need medical malpractice insurance. I’d love to know what Katrina Ubell does in this situation. Is there such a thing as coaching insurance? If so, where’s the best place to get it or at least more info about it. Thank you so much!