Contact Information John D. Mann DDS 5200 Snyder Lane #3 Rohnert Park, CA 94928 Phone: 707-584-9589 Fax: 707-584-8057 Click here to email Dr. Mann Business Hours: Monday-Thursday 8 a.m.-5 p.m. We Accept: Patient Information Form Download and fill out our Patient Information Form (pdf) for your upcoming appointment. Click Here