To cite npi in publications, please use:

Farach FJ (2022). npi: Access the U.S. National Provider Identifier Registry API (Version 0.2.0). doi:10.5281/zenodo.6326729, https://github.com/ropensci/npi.

Farach F (2022). npi: Access the U.S. National Provider Identifier Registry API. doi:10.5281/zenodo.6326729, R package version 0.2.0, https://github.com/ropensci/npi.

Corresponding BibTeX entries:

  @Manual{,
    title = {npi: Access the U.S. National Provider Identifier Registry
      API (Version 0.2.0)},
    author = {Frank J Farach},
    year = {2022},
    url = {https://github.com/ropensci/npi},
    doi = {10.5281/zenodo.6326729},
  }

  @Manual{,
    title = {{npi}: Access the U.S. National Provider Identifier
      Registry API},
    author = {Frank Farach},
    url = {https://github.com/ropensci/npi},
    year = {2022},
    doi = {10.5281/zenodo.6326729},
    note = {R package version 0.2.0},
  }