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Last Modified: 9/7/2018 Location: FL, PR, USVI Business: Part A, Part B

Contractor numbers for processing Medicare administrative contractor workload

The Centers for Medicare & Medicaid Services (CMS) issues workload numbers to replace the carrier and fiscal intermediary contractor numbers for the Medicare administrative contractor (MAC) Part A and Part B workloads in the state of Florida and the territories of Puerto Rico and the U.S. Virgin Islands. These changes were made because certain CMS claim systems rely on these numbers for processing purposes. Some provider systems may also rely on these numbers.
Part A and Part B claims for Florida, Puerto Rico, and the U.S. Virgin Islands are processed by First Coast Service Options Inc. (First Coast) using the contractor numbers and effective dates listed below:

Part A workload

State/Territory
MAC Workload No.
Effective Date
Florida
09101
02/16/2009
Puerto Rico/U.S Virgin Islands
09201
03/02/2009

Part B workload

State/Territory
MAC Workload No.
Effective Date
Florida
09102
02/02/2009
Puerto Rico
09202
03/02/2009
U.S Virgin Islands
09302
03/02/2009
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