Eligibility Verification

Providers are responsible for verifying eligibility every time a member is seen in the office. PCPs should also verify that a member is assigned to them.

Eligibility can be verified through:

Calling the Delaware Diamond State Health Plan Medicaid Call Center 1-800-999-3371, between the hours of 8am – 4:30pm EST.


Logging into the State of Delaware Medicaid Provider Portal