Centene · Rate Limits
Centene Rate Limits
Centene's CMS-mandated FHIR APIs are gated behind partners.centene.com application registration. Per-second / per-minute throttling numbers are not published on the public portal landing; CMS Interoperability guidance allows payers to apply reasonable throttling so long as it does not interfere with the member's right to access. Limits surface during application onboarding.
3 Limits
Throttle: 429
HealthcareFHIRCMS InteroperabilityRate Limiting
Limits
Patient Access (per registered application) application
see partner portal documentation per registered app
Provider Directory (public) IP
see partner portal documentation
Provider RTR / PDEX (authorized payer) payer-account
see Payer Data Exchange agreement
Policies
SMART-on-FHIR auth
Patient Access requires SMART-on-FHIR / OAuth 2.0 with member-granted scopes; tokens are short-lived and refresh tokens follow the SMART-on-FHIR profile.
Backoff
On 429 / 503, retry with exponential backoff and jitter. Honor Retry-After when supplied by the FHIR gateway.
Member access protection
Per CMS guidance, throttling must not deny a member's right to access their own clinical and financial information; investigate sustained 429s through the partner portal.