26-1024: Notify Wellcare of Ownership, Tax Identification Number and Provider Information Changes

August 25, 2026

Ancillary providers must promptly report information changes to help prevent claim denials and payment delays.

You are required to notify Wellcare in writing when changes occur that affect your provider records or contracting information.

Failure to notify us will result in claims being submitted under information that does not match our contracted provider records. Claims may be denied, processed as out of network or delayed until your records are updated.

Written Notification Is Required for These Changes

Under the terms of your provider agreement, you must notify us in writing when any of the following changes occur:

Change of ownership
Tax Identification Number (TIN) change
National Provider Identifier (NPI) change
Business name change
Address or location change
Site addition
Site closure
Phone number change
Other changes that affect provider records or contracting information

Where to Send Notifications

Changes Affecting Your Provider Contract

If you are undergoing a change of ownership, you must notify the Contracting Department and provide any required regulatory approval documentation as part of the Change of Ownership process. Send written notification to: AncillaryContractNotices@healthnet.com.

Changes Not Affecting Your Contract

If the change is limited to your address, phone number or other demographic information, you must contact your Provider Engagement representative.
If you do not know who your Provider Engagement representative is, contact Wellcare at 866-999-3945.

Who This Applies To

This requirement applies to ancillary providers. Ancillary providers include, but are not limited to:

Ambulatory Surgery Centers (ASC)
Dialysis facilities
Durable Medical Equipment (DME) providers
Hearing aid providers
Home Health providers
Home Infusion providers
Hospice and Palliative Care programs
Inpatient Rehabilitation facilities
Intermediate Care Facilities (ICFs) and Long-Term Care facilities

Laboratory facilities
Long-Term Acute Care Hospitals (LTACHs)
Orthotics and Prosthetics providers
Ostomy and Medical Supply providers
Radiology, Magnetic Resonance Imaging (MRI), Positron Emission Tomography (PET), and Radiation facilities
Skilled Nursing Facilities (SNFs) and Long-Term Care facilities
Sleep Study centers

Need Help? Contact Us

Relevant sections of the Wellcare Provider Manual have been revised to reflect the information contained in this update as applicable. The manual is available online at Wellcare California Medicare Providers.

If you have questions regarding the information contained in this update, contact 866-999-3945.

_{This information applies to Ancillary Providers.}