Expanding Horizons, Inc. Expanding Horizons, Inc. Search | Advanced Search | New Members | Coupons and Discounts | All Categories Health Care >> Health Care - Services Expanding Horizons, Inc. 5075 Miller Trunk HwyDuluth, MN 55811 | View on Google Maps John Kolthoff (218) 626-1926 Visit Site If your business isn't here, contact us today to get listed!