In addition to publications, presentations and university instruction, research and administration, Dr. Painter has served as a Nutrition Consultant for the following businesses and organizations:
| 2003-2005 | Circle Group Inc., Mundelein, IL |
| 2001-2002 | Standard Process Inc., Palmyra, WI |
| 1999-2000 | Warner Lambert, Morristown, NJ |
| 1996-2000 | Southern Cooking and Catering Company, Urbana, IL |
| 1996-2000 | Geriatric Consultants & Care Managers, Champaign, IL |
| 1998-1999 | Cookies by Design, Springfield, IL |
| 1993-1994 | Decatur Park District, Decatur, IL |
| 1986-1990 | Marriott Corporation, Tulsa, OK |
| 1981 | Hospital Affiliates International, Durant, OK |
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