The name of this caller seemed to be Deltahlthdirct, but that was over a year ago in 2017, so it could've changed by now. This seems to be a virtual phone. The carrier for this number is Level 3 Communications in Atlanta, GA.
You can change or remove the name displayed on the webpage for your phone number:
The caller ID name (CNAM) is displayed when you call people who do not have a custom name saved in their contact list for your phone number. If you change or remove the name, it will change on all phones you call in the future.