Mad River HealthCare Clinic Suite Offices Located in front of Mad River Community Hospital (brown buildings) 3798 Janes Road, Arcata, CA 95521 Hours: 8:30am - 4:30pm, closed from noon-1pm for lunch. New Patients: (707) 825-4959. Suite 8 & 10 Occupational Health Services (707) 825-4907 Dr. Boni, MD Dr. Bass, MD Dr. Lyell, MD. Suite 14.