Denison Medical Group, LLC Share: HealthcareHealth & Wellness Denison Medical Group, LLC Visit Website Request Info 1087 Dennison Ave. Ste. 7 Columbus, OH 43201 (614) 459-2906 About Map About Denison Medical Group LLC is a group of Physicians who are hospitalists. We are currently servicing patients in LTAC (Long Term Acute Care) facilities in Columbus Ohio. What's Nearby? Distance: 5 10 15 20 25 50 mi.