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Providers: Always Update Your W-9 Tax Form

Date: 11/19/25

Sunshine Health reminds providers that they should always keep their W-9 tax form up to date.

Remember, an outdated W-9 could result in the withholding or misdirection of payment from the health plan. By keeping your W-9 updated, providers can help ensure they receive timely payments from the health plan and comply with IRS regulations to avoid potential penalties.

Providers should submit an updated W-9 once a year, whenever their payment address changes, or whichever event comes first. Any W-9 changes should be considered time-sensitive.

Keeping your W-9 updated also ensures that you will receive timely incentive payments.

The following guidance will help providers know when and how to update their W-9.

When to Update Your W-9

  • Ownership Change: Whenever there’s a change in ownership, whether if the practice was sold or shares transferred, you must update your W-9.
  • Name and/or Address Change: When your organization changes its name, moves to a new physical location or gets a new mailing address to receive payment.
  • Business Structure Change: If your practice/organization undergoes a change such as merging with another organization; acquiring another practice; changes legal status; etc.
  • Tax Classification Change: Whenever the organization switches from a single owner to an LLC, or from an LLC to a new owner.

How to Update Your W-9

How to Update Your TIN and/or Name

Send the latest Taxpayer Identification Number (TIN) and/or practice/organization name to the Sunshine Health Contracting team via email: SunshineContracting@sunshinehealth.com

Questions?

Sunshine Health has a wealth of resources available to help answer your questions and address your concerns:

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