healthPlanNetworkId

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > healthPlanNetworkId

Name or unique ID of network. (Networks are often reused across different insurance plans).
Values expected to be one of these types
Text
Used on these types
HealthPlanNetwork
MedicalOrganization

Source

https://github.com/schemaorg/schemaorg/issues/1062