Home › Colorado › Castle Rock, CO › Crossroads Orthodontics Crossroads Orthodontics Orthodontic practice in Castle Rock, CO Locations in Castle Rock and Parker. Listing details last checked September 22, 2026. Contact Practice phone (303) 758-2366 Website crossroads-ortho.com Call (303) 758-2366 Visit website Locations Location 1 2240 Mercantile Street, Suite #203 Castle Rock, CO 80109 (303) 758-2366 Location 2 16830 Northgate Drive, Suite 100 Parker, CO 80134 (303) 758-2366 Providers Dr. Mark Gregston More Castle Rock orthodontic practices Castle Rock Orthodontics Lane Orthodontics Meadows Orthodontics View all Castle Rock listings