Ultragenyx Pharmaceutical, Inc. Share: Bio-Medical - Research Ultragenyx Pharmaceutical, Inc. Visit Website 60 Leveroni Ct. Novato, CA 94949 (415) 884-2800 (415) 884-0562 (fax) www.ultragenyx.com About About Ultragenyxâ„¢ is a biotech focused on developing therapeutics for rare diseases.