If you have Medicaid, your doctor has to bill them first. Does Medicaid know you have other health insurance? Is that allowed in your county?
Yes, AS LONG AS the provider you see, accepts your Medicaid.
In general, welfare will cover the deductible, co-insurance and co-pay of your UHC policy. However, the provider must be in network for the UHC plan and must accept your welfare coverage.
If the provider doesn't accept welfare it won't pay. If the provider is not in network for UHC and does accept welfare you might have out of network charges to pay.
these are questions you need to ask both of those agencies – they will know