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HMO/POS Membership by Age

What Was Measured?

The age distribution of commercial HMO and point of service (POS) enrollees in California’s largest health plans in the 2005 calendar year. HMO enrollment information is not ranked because it is not a quality measure.

Why Is It Important?

Enrollees may feel more comfortable in one HMO or POS than another depending on the range of covered services, the perceived stability of the HMO or POS, or the availability of different types of physicians who best meet their needs. The age distribution of enrollees in an HMO or POS is one indication of how Californians select their HMO or POS plan.

What Was the Source?

Data on HMO and POS enrollees voluntarily reported by California HMOs to the National Committee for Quality Assurance (NCQA) and made available through NCQA’s Quality Compass®. HMO and POS data are reported together here because Quality Compass® does not separate HMO and POS membership in it’s report. The HMO/POS Membership by Age data comes from NCQA’s 2005 Quality Compass®, and differs from the 2006 HEDIS and CAHPS quality information found in the 2006 OPA Report Card.

HMO/POS Membership by Age

0 to 17

18 to 34

35 to 44

45 to 54

55 to 64

65 and over

Aetna Health of California Inc. 27 % 26 % 21 % 16 % 8 % 1 %
Blue Cross HMO - CaliforniaCare 26 % 25 % 20 % 17 % 10 % 2 %
Blue Shield of California HMO 27 % 24 % 19 % 17 % 10 % 3 %
CIGNA HealthCare of CA 30 % 26 % 21 % 15 % 8 % 1 %
Health Net of California, Inc. 26 % 23 % 19 % 18 % 11 % 1 %
Kaiser Permanente - Northern California 26 % 24 % 18 % 18 % 13 % 1 %
Kaiser Permanente - Southern California 27 % 24 % 17 % 18 % 13 % 1 %
PacifiCare of California 28 % 23 % 19 % 18 % 10 % 1 %
Western Health Advantage 27 % 25 % 19 % 19 % 10 % 1 %