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Use Import your own list when you already know which healthcare professionals you want to reach. This path creates an Audience from your own CSV instead of building rules inside Wrango.

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What you can import

The current import flow accepts:
  • A .csv file.
  • A file up to 500 MB.
  • A file that includes an NPI column.
Wrango only uses the NPI column during import. Additional columns are not used by the system. The current parser accepts common NPI header variations, including:
  • npi
  • npis
  • npi id
  • npi number
  • national provider identifier
Header matching ignores capitalization, spaces, dashes, and underscores, so NPI, NPI Number, and National Provider Identifier all work. The NPI column can sit in any position in the file.

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Import flow

1

Start from Create Audience

In the Audiences dashboard, click Create Audience, then choose Import your own list and Begin upload.
2

Add audience details

Complete Audience details first. This step saves the draft Audience with its name, description, and Workspace tags.
3

Upload your CSV

Move to Upload CSV and upload the file. Wrango validates the file, extracts NPIs, and shows the cleaned list before you continue.Use View example file if you need a sample CSV. The example includes an NPI column only, which matches the expected format. Additional columns in your own file are ignored.
4

Check the preview

Continue to Preview Audience. Wrango generates a preview from the uploaded NPIs and shows the resulting audience before submission.
5

Review and process

In Review, confirm the audience summary and import counts, then click Finish & process.

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Validation and file checks

The import step checks the file before you can continue. These conditions stop the import. Update the file and upload it again.
  • The file must be a CSV.
  • The file must include an NPI column. If Wrango cannot find one, the error names the most common accepted headers.
  • The file can be up to 500 MB.
  • The imported list can include up to roughly one million NPIs.
  • The file contents must parse as valid CSV.
  • At least one row must be a valid NPI. If every row is dropped, Wrango stops the import with No valid NPIs found.
These conditions are flagged as warnings and do not stop you continuing, as long as at least one row is valid. Wrango notes the row and ignores it.
  • Duplicate NPI values.
  • Empty NPI values.
  • Values that are not 10 digits, or contain anything other than numbers.
  • Values that are 10 digits but are not real NPIs. A valid NPI also has to pass the standard NPI checksum, so Wrango can tell a real NPI from a 10 digit number.
Duplicate, empty, and wrong-length values produce one warning per row, so a file with many of them produces a long list. Values that fail the checksum are grouped into a single warning that names the first ten.

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Field mapping

The current import flow does not expose a manual field-mapping screen. Wrango automatically detects the NPI column and creates a cleaned import file from those values only.

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After a successful import

After you click Finish & process:
  • Wrango submits the Audience for processing.
  • The success dialog offers Return to audience dashboard.
  • The imported Audience appears in the Audiences dashboard.
  • Its status moves into processing, then later becomes ready or shows an error if processing fails.
The dashboard will show the imported Audience as Type = Import.