Dr. Mark Jensen was born and raised in St Louis Park, Minnesota. He received a Bachelor of Science degree from Bemidji State University in 1978. He is a 1982 graduate of the University of Minnesota's School of Dentistry. Dr Jensen completed a general practice residency at Chicago's Michael Reese Hospital in 1983. He practiced general dentistry in Chicago for several years before completing his residency in Endodontics at the University of Illinois, Chicago. Following private specialty practice in Illinois, Dr Jensen returned to Minneapolis in 1992 to open Endodontic Professionals.

Dr. Jensen is a member of the American Dental Association, American Association of Endodontists, Minnesota Association of Endodontists, and the Minnesota Dental Association. Dr. Jensen enjoys Gopher football, the Twins, and spending time with his family.

Dr. Penniston received her DDS degree from the Medical College of Virginia in 1982. She had previously received her baccalaureate degree in Medical Technology from Indiana University of Pennsylvania in 1976. Following dental school, Dr. Penniston completed a hospital-based internship at Michael Reese Hospital in Chicago. She practiced general dentistry in Chicago until 1992 when she began her specialty education at the University of Minnesota, receiving her Master's degree in Endodontics in 1994.

Dr. Penniston volunteers through Donated Dental Services of Minnesota. She has been with Endodontic Professionals since 1997. Her interests include gardening, bicycling, playing tennis, and spending time with her two children. Dr Penniston is a member of the American Dental Association, American Association of Endodontists, Minnesota Dental Association, and the Minnesota Association of Endodontists.

Dr. Bernard Hofmann was raised in Jacksonville, Florida. He received his Bachelor of Science degree from the University of North Florida in 1992 and his DMD degree from the University of Florida in 1996. Following graduation from dental school, he was commissioned as an officer in the U.S. Navy and served 11 years in the U.S. Navy Dental Corps. During this time, he completed specialty training in Endodontics and a Master of Science degree at the Naval Postgraduate Dental School in Bethesda, Maryland in 2003. After coming off active duty in 2007, he spent a year and a half in a private practice associateship in Jacksonville before deciding to join Endodontic Professionals in 2009.

Dr. Hofmann is an active Navy Reservist with a unit based in Minneapolis. He is a member of the American Dental Association, American Association of Endodontists, Minnesota Dental Association, and Minnesota Association of Endodontists. Dr. Hofmann and his wife, Akemi, enjoy spending time with their dogs, as well as running, surfing/snowboarding, and travel.

Dr. Bradford Pugh graduated from the University of Missouri-Kansas City School of Dentistry in 2003. He completed his endodontic residency at the University of Southern California in Los Angeles. He has dental licenses in both Minnesota and California.

He is a member of the American Association of Endodontists, American Dental Association, Minnesota Dental Association, Minnesota Endodontic Association, San Gabriel Valley Dental Society and the California Dental Association.

Dr. Pugh has lived and traveled extensively throughout the United States and Europe. Hobbies include music, photography, boating, fishing and snowmobiling.

Dr. Matthew Del Mastro was raised in Toronto, Canada and attended Brown University in Providence, Rhode Island, earning a bachelor's degree in biology. While at Brown, he was a member of the varsity men's swimming team and received academic All-Ivy recognition. Dr. Del Mastro earned his Doctor of Dental Medicine degree from Tufts University in Boston, Massachusetts, where he graduated Summa Cum Laude and was inducted into the Omicron Kappa Upsilon honorary dental society. Dr. Del Mastro also received his certificate in Endodontics from Tufts University. While at Tufts, he lectured and conducted research on several topics, including cone beam computed tomography.

Dr. Del Mastro lives with his wife, Emilie Del Mastro, a practicing orthodontist, his daughter, Daniela, and two cats, Butters and Tobie.

Outside of dentistry, his interests include working out, watching and playing sports, cooking and spending time with his family.