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| Iowa Facilities/Entities: |
| South Dakota Practitioners: |
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When to Notify Us
Update Wellmark with:
- Changes in taxpayer identification numbers
- Changes in demographic information (addresses, suite numbers, phone numbers, name changes, specialty changes, etc.)
- Changes in practice status (closing, relocation, change of ownership, etc.)
- The addition of a location
- Changes in National Provider Identifier (NPI)
Wellmark will review your request and let you know within 30 days if further actions are necessary (such as a change in your contract).
How to Notify Us
- To report changes in your address, name, specialty or Taxpayer ID, complete the Provider Change Form. A completed W-9 Form
 (250KB) must accompany any Tax ID change.
- To report a change in your NPI, use the NPI Notification Form and select the "Change to Existing Notification" option.
- To check on the status of a request previously sent, call us at 1-800-708-1342 or 515-245-5100, or e-mail us at providercredentialing@wellmark.com
 . We will respond to your inquiry within 24 hours of receipt.
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