There are several medical schools as well as osteopathic medical schools that offer combined degree programs. Most of them are, however, seven or eight-years long (combined BA/MD). Very few of them are only six-year programs.
Off the top of my head, I know that NYU/NYU Med, CUNY Brooklyn College/SUNY Downstate, RPI/Albany Medical College, BU/BUMC, NYIT/NYCOM, CUNY City College of New York, and I believe Duke/Duke Med all offer combined degree programs.
For more information you can always visit the Association of American Medical Colleges’ website at http://www.aamc.org.
Good luck.
Timothy Wu, MD
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