IPEDS award level 17 is self-reported and nursing schools file it loosely, so a third of the institutions that appear to offer a research doctorate in the federal data offer only a DNP. All 180 were checked against the school's own doctoral-programs index and 42 were ruled out. The rejections did more for the site than the confirmations: they are the reason the count is 138 universities and not 180.
There is no accreditation column anywhere on the site, and that is a finding rather than an omission. CCNE and ACEN accredit BSN, MSN and DNP programs, and neither body accredits research doctorates, so there is no seal to check. What replaces it is where the research money comes from, taken from NIH RePORTER as National Institute of Nursing Research awards across FY2021 to FY2025.
A funded residential doctorate and one you pay for while keeping your nursing job are not the same purchase, and a single list buries the second every time. So campus and online run on separate models with different weights and are never merged, and each list is complete for its own kind rather than a top slice of a combined one.