O'Brien, Katharine DO 7 years ago ID: #1317 Listed In : Physicians 6937 N IH-35 , Credentialing , Austin. TX, USA 78752 (512) 420-2772 Business Description O'Brien, Katharine DO, Address : 6937 N IH-35 , Credentialing , Austin. TX, USA 78752, Phone : (512) 420-2772 Reviews & Ratings Write a Review No Review. Please login / register to add your review. Tags : health