C2C Innovative Solutions / Maximus Federal (Medicare Part C & D IRE)

Denials, appeals and grievances

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fax appeals

Part C IRE (Maximus, requests dated before 5/1/2026)

Official page read
Phone

No phone listed for this route

Fax

585-425-5292

Published hours

Not published in this record

Product, plan and location

medicare advantage
National contact — confirm product and location

Mailing address

Not researched for this route

CMS IRE page: Maximus fax 585-425-5292 applies to requests before 05/01/2026; starting 05/01/2026 requests go to C2C (fax 904-539-4080).

View source ↗ · Source checked 2026-10-21

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fax appeals

Part C IRE (C2C) - requests on/after 5/1/2026

Official page read
Phone866-320-0963Fax

904-539-4080

Published hours

Not published in this record

Product, plan and location

medicare advantage
National contact — confirm product and location

Mailing address

Not researched for this route

C2C Innovative Solutions, QIC Part C, P.O. Box 1949, Jacksonville FL 32231-0053; UPS/FedEx 301 W. Bay St Suite 1110, Jacksonville FL 32202.

View source ↗ · Source checked 2026-10-21

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Wait time: not establishedBest time from caller reports: not established. Published hours are not a wait forecast.

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Find appeal teams, faxes and mailing addresses. Use the denial notice to confirm the appeal level, filing deadline and recipient.

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  • Denial notice, remittance and reason codes
  • Previous appeal confirmation and decision
  • Supporting evidence and any required authorization to represent the member

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  • Is this a claim correction, provider dispute or member appeal?
  • What deadline and submission channel apply to this case?
  • How can the office confirm receipt and track the decision?

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