Enrolment, revalidation, NPI and exclusion screening.
There is no free public lookup that turns an NPI into a tax ID. CMS planned to publish organizations’ EINs in 2007, then hid every nine digit number after some providers entered Social Security numbers as their corporation’s EIN. Here is where the tax ID goes on a claim, why payers match it to your NPI, and where to get one legitimately.
You will read a lot of content telling you that monthly exclusion screening is federally required. That is not quite true, and the real answer is more useful. What is mandated, what OIG recommends, and what actually determines your exposure are three different things. Plus the three lists you need rather than one, and why the penalty figure in every article you read is already wrong.
Type 1 belongs to a person, Type 2 belongs to a business. Easy enough until you hit the sole proprietor question, where being incorporated changes which number goes in Box 33a. Box 24J is always the individual, and Medicare will reject a group NPI there. Here is where each number belongs, on paper and in the 837P, and the rejections you get when it is wrong.