I stutter on my first name, last name, and phone number. This year I have also needed a lot of medical attention and have seen 5 new doctors. I feel your pain. I do my best to just get through it. Sometimes if I’m really struggling, I explain I have a speech impediment and ask them if they’d like me to write it down instead. Also saying letters or numbers a little differently also helps. Although I’m not sure if I should be doing that. For example saying them in a different accent, but make it super low key so it’s not noticeable 😂