Drs. Scott Fetherston and Tim Helms. Providing advanced orthopedic surgery and surgical care for pets in Sonoma, Humboldt, Mendocino, Napa, Marin, and Lake Counties in California. Serving cities Santa Rosa, Petaluma, Rohnert Park, Sebastopol, Healdsburg, Fort Bragg, Ukiah, Eureka, Arcata.