Explore the Trio HMO plan network

Trio HMO—offered by employers, union groups, and benefit trusts

With Trio HMO, you have access to a specially selected network of doctors, hospitals, and specialists who are committed to working together to deliver a better healthcare experience.

You and your dependents must live or work in the Trio HMO plan service area to be eligible for coverage. See the Evidence of Coverage for a complete description of the plan’s benefits, exclusions, limitations, and conditions of coverage.

How to search the Trio HMO network

Use Blue Shield's Find a Doctor tool to search for doctors, hospitals, specialists, and more within the plan’s network.

Not sure if Trio HMO is available in your area? Use our Trio ZIP code tool.

Trio HMO availability by county

The plan’s network extends throughout select California counties.

Partial (P) = The Trio HMO network is available only in parts of this county.
Full (F) = The Trio HMO network is available throughout the full county.

The Trio network

Medical groups: The Trio HMO network (PDF, 84 KB) includes a subset of physicians, Independent Practice Associations (IPAs), medical groups, and affiliated physicians from our full HMO network.

Hospitals: The Trio HMO network (PDF, 84 KB) includes a list of the hospitals that physicians from the Trio IPAs and medical groups listed above typically refer to. For a complete list of hospitals available in the Trio HMO network, please use Blue Shield’s Find a Doctor tool.