So I'm a reapplicant about to be verified in about a week, and the MD from which I have requested a letter has not submitted it yet. He submitted the letter for me last year, and I think it is a good one. This year, he said he would submit it for me about two months ago, but he hasn't yet. I've sent him two reminders over the past month, and he didn't respond to the last one. I have a committee letter and a personal letter from an asst. dean of a medical school that is not one of those to which I'm applying. I guess I don't really NEED the letter from the MD I shadowed, but I'd like to have it as my third letter. At what point do I just take that letter off my app? I have my secondaries written to submit as soon as I get them, and I really don't want to hold up my app.