With DrChrono Payments, our customers can set the Merchant ID for the entire practice or an office within the practice group. They can no longer set it per provider.
If they need to have it set up by provider, each would need to have their own office. Then, you would use the multi merchant feature to set up each office under their own PS/DrChrono Payments merchant id.
Customer Facing article on Multi Merchants on PS/DrChrono Payments