https://apellica.com/press/denial-appeal-benchmark-2026 Apellica en 2026-09-15T00:00:00.000Z Independent Reviewers Overturned 72 Percent of California Insurance Denials in 2025; Fewer Than 1 Percent of Denials Are Appealed, Apellica Benchmark Finds press release, Research, Public records, Health insurance, Open data