Dr. Dennis Keenan is a cum laude graduate from Sherman College of Chiropractic. Prior to receiving his doctorate in Chiropractic, Dr. Keenan earned a masters degree in Business Administration from Rutgers University and a bachelor of science degree from St. Peter’s College. He is a past president of the Garden State Chiropractic Society. He has been using Sigma Instruments for over 20 years.

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