We will respect patient confidentiality in all matters. As members of the community, we are committed to public service and to sharing our medical expertise. ... Matthew Berger, DO. Olympia Multi-specialty Clinic. 406-A Black Hills Ln SW. Olympia, WA 98502 (360) 754-1735. Gastroenterology (360) 754-1737. Cardiology/Dietary (360) 704-3450 ....