Medi-Cal Dental aims to provide Medi-Cal members with access to high-quality dental care. Find-A-Dentist Use our Find-A-Dentist provider directory search.Call your county office to get started. San Bernardino County: 877-410-8829. When you complete a Covered California application, your eligibility for Medi-Cal will automatically be determined. St. John's Community Health offers free and lowcost dental services in and around the Los Angeles area to children, teens, and adults. By mail: Send a completed and signed Single Streamlined. Applicationto your local county social services office. If you have Medi-Cal, you will be able to use your dental benefits at any Medi-Cal Dental provider in California. There's no extra application needed.