At Exagen, our mission is clear to offer solutions to address the medical needs of our community. On behalf of all of us at Exagen, we're committed to being your partner and persevering together in all the days and years ahead.". - Ron Rocca President and CEO, Exagen Inc. For more information, please call 888.452.1522 or email info@exagen ...Contact Us‧Leadership‧About Exagen‧Our Tests‧News‧Avise CTD.