Medicare Advantage plans are required by the Reducing Barriers to Medicare Beneficiary Access Act (ACA §1002 / 42 CFR §422.111) to maintain accurate provider directories. CMS enforces compliance via quarterly audits — plans with inaccurate directories face civil monetary penalties.
Fonteum computes these scores from cross-source NPI agreement data (NPPES vs CMS Care Compare vs PECOS) — the same engine that powers the Provider Directory Accuracy Index. All underlying data is public record.
Scores are computed from Fonteum's cross-source NPI agreement engine. Each MA contract is scored on four dimensions:
The composite score is an equal-weight average of the four sub-scores. Plans with fewer than 50 matched NPIs are flagged as insufficient-sample and excluded from ranking.
Full methodology →Fonteum. (2026). REAL Act Medicare Advantage Plan Compliance Scores. Retrieved 2026-05-26, from https://fonteum.com/research/real-act-compliance
Fonteum. "REAL Act Medicare Advantage Plan Compliance Scores." Accessed 2026-05-26. https://fonteum.com/research/real-act-compliance.
@misc{fonteum_real_act_2026,
author = {Fonteum},
title = {REAL Act Medicare Advantage Plan Compliance Scores},
year = {2026},
url = {https://fonteum.com/research/real-act-compliance},
note = {Methodology: real-act/v1. Accessed 2026-05-26.}
}Limitations:real-act/v1 uses state-level NPI aggregates as an approximation for plan-specific NPI rosters. Full plan-to-NPI mapping from CMS MA crosswalk files is queued for real-act/v2. Scores reflect Fonteum's cross-source analysis and are not an official CMS determination.
Sources: NPPES (CMS), Care Compare (CMS), PECOS (CMS). All data is federal public record. Methodology: real-act/v1.