San Ramon Dentist. Dr. Garth Riopelle provides Tooth Whitening, Dental Implants, Restorative Dentistry, Tooth Ache, Family Dentistry to the following locations: Danville, Dublin, Pleasanton, Walnut Creek. Danville Dentist providing professional dentistry including Tooth Whitening, Dental Implants, Restorative Dentistry, Tooth Ache, Family Dentistry in San Ramon, Danville, Dublin, Pleasanton, Walnut Creek, .