SIERRA VISTA FAMILY MEDICAL CLINIC. Home Meet Our Providers Hours & Directions Patients Urgent Care News Clinic. Phone Number: (805) 582-4000 Fax: (805) 579-6082. Urgent Care. Phone Number: (805) 582-4050 Fax: (805) 522-5582. Referrals. Phone Number: (805) 582-4040 Fax: (805) 582-3880 ....