Joseph J. Nissim, M.D. Joseph J. Nissim, M.D. (303) 415-4155 Primary Specialties Internal Medicine Medical Groups & Affiliations Frontier Internal Medicine SHARE 4.9 out of 5 ( 140 Ratings) How The Ratings Are Compiled Comments 15-Oct-2019 Good. 22 Total Comments Page 1 2 3 4 5 Next Comments 28-Aug-2019 *Dr. Nissim has been an excellent physician for me. High recommendation! 22 Total Comments Page 1 2 3 4 5 Next Comments 27-Jun-2019 *Dr. Nissim is the BEST dr. ever, none like him! 22 Total Comments Page 1 2 3 4 5 Next Comments 26-Jun-2019 Excellent 22 Total Comments Page 1 2 3 4 5 Next Comments 13-Jun-2019 *Dr. Nissim is very professional. 22 Total Comments Page 1 2 3 4 5 Next Primary Office Address Frontier Internal Medicine 2101 Ken Pratt Boulevard, Suite 104 Longmont, CO 80501 Get Directions Phone (303) 415-4155 Fax (303) 776-3109 About Physician Bio Dr. Nissim is board certified in internal medicine. He graduated from Rush Medical College in Chicago and completed his residency at Presbyterian/St. Luke’s Hospital in Denver. He has been with Frontier Internal Medicine since its inception in 1987. Dr. Nissim believes in building strong relationships with his patients by discussing treatment philosophies and mutual expectations in the initial visit. In his free time, Dr. Nissim is an avid swimmer and enjoys spending time outdoors. Education Medical School Rush Medical College of Rush Univ Residency Presbyterian St. Luke's