Dentist in Mountain Ash, Wales The most extensive list of Dentist in Mountain Ash, Wales P.S John Mountain Ash, Wales Dentist Detail Address: Dental Surgery, 60A Oxford Street, Mountain Ash, Wales CF45 3HB . Phone: +44 1443 474441. Website: wales.nhs.uk. Types of specialists in Mountain Ash, Wales Accounting Car repair Dentist Doctor General contractor Lawyer Painter Plumber Real estate agency Roofing contractor Veterinary care