MedicaidAdministrativeLow impact
Delay Implementation of Prescribers NPI in the Prescriber ID Field of Pharmacy Claims
Illinois Medicaid - HFS·IL · Pharmacy·Provider Notice
Effective date
Aug 1, 2008
We identified it
Jun 21, 2026
Summary
The Illinois Medicaid program has delayed requiring prescribers' NPI numbers in the prescriber ID field of pharmacy claims that was scheduled to take effect August 1, 2008. Pharmacies can continue using other prescriber identifiers like DEA numbers, license numbers, or HFS Legacy ID numbers.
Action Required
No immediate action required. Continue using current prescriber identifiers (DEA number, License Number, or HFS Legacy ID number) for Illinois Medicaid pharmacy claims. Monitor for future provider notices with updated implementation timeline.