Illinois insurance regulators last week slapped a half-a-million-dollar penalty on Quartz Benefits, an exchange insurer, for violating federal and state mental health parity laws. The move came just months after the Illinois Department of Insurance fined Celtic Insurance Company $1.25 million for running afoul of the Mental Health Parity and Addiction Equity Act and a state law that requires plans to maintain an adequate provider network. Quartz was fined on Jan. 11 and Celtic on Oct. 18. Both violations were...