Anyone did claims in 2 companies for maternity? Which has same insurance provider?

You can claim cashless from the first company, take the documents, and then claim reimbursement from the second company for the remaining amount. I have done it and received the money, and it's perfectly legal.

This works if insurance provider are different

Claim only difference amount otherwise it’s fraud

Can we claim it if the TPA is same but different insurance company?

You can do it… but don’t claim complete amount. Difference can be claimed .

Don't do it. It's consider as fraud