Hello Nancy, and welcome to our support group. Can you tell us what led to the bronchoscope?

As for whether there are other treatments, the answer is a qualified "Yes" Depending upon the severity of your infection - if there are cavities or large nodules the infection is more advanced and antibiotics are usually required.
However, if the infection is less advanced, some people are able to keep it under control, or even decrease it, doing daily airway clearance and nebulizing 7% saline solution. The saline helps thin and loosen the mucus that harbors the infection and airway clearance helps you cough it out. 7% saline has the added advantage of creating an environment where MAC cannot grow.
If you are new to our site you might want to start by reading through these two discussions, which contain a variety of links and a lot of great information:
https://connect.mayoclinic.org/discussion/macntm-is-different-for-everyone-treatment-might-be-different-too/?pg=12#chv4-comment-stream-header
https://connect.mayoclinic.org/discussion/resources-for-the-abcs-on-bronchiectasis-and-mac-ntm/
Have you also been diagnosed with Bronchiectasis or COPD?