how do you bill for a fill-in dentist (on contract) for a sole proprietor LLC?June 8, 2016 by Admin « Back to Previous Page Answer Question ▲0 ▼ ♥ 0 Marked as spamAsked on June 8, 201647 viewsFollowUnfollow ▲0 ▼✔ Private answerYou will use the NPI of the dentist who performed the work in box 54 and the facility/dentist (sole proprietor LLC information) entity in boxes 48-52Marked as spamAnswered on June 9, 2016 « Back to Previous Page Post your AnswerAttach YouTube/Vimeo clip putting the URL in brackets: [https://youtu.be/Zkdf3kaso] Notify me of follow