Some hospitals perform one or two brain cancer surgeries; others do hundreds. Small volumes can mean greater risks. See the numbers for 11 cancers.

California's insurance market changed dramatically when millions became newly eligible for public insurance and private subsidies. California Health Insurers: Two Years After Reform provides a snapshot of the insurance market at the end of 2015.

One in eight US births takes place in California. How is our state doing on maternity care measures, and how does California compare with the rest of the nation?

A surge in digital technology innovations is helping low-income consumers monitor their health, manage their care, and connect with clinicians.

Health care data are becoming increasingly portable across provider organizations and information technology systems. Concomitant advances in infrastructure are needed to manage the data flow.

Mobile technology has the potential to improve health care efficiency, support self-care, and lower costs. The massive baby boom generation stands to benefit most.

A lot of health care happens in our own backyards. This report looks at the role of California's counties in providing health services for our state's most vulnerable residents.

Capacity at California's acute care hospitals was fairly stable over the decade from 2004 to 2013, with some regional variation. This Almanac report, California Hospitals: An Evolving Environment, examines number of hospitals and supply of beds, use of services, finances, and quality.