Riverview Chiropractic in Pembroke Ontario is currently the longest standing chiropractic clinic in the Ottawa Valley, founded by Dr. John Ewart over 30 years ago and passing to Dr. Aaron Simon in 2008. The clinic is best known for its use of the Activator Method of Chiropractic, which involves the use of a hand held instrument to deliver an adjustment to patients rather than the more common hands on approach involving twisting the patient. Dr. John Ewart was one of the first chiropractors in Canada to use the Activator method of chiropractic, and as of 2011 Dr. Aaron Simon is the only certified advanced level practitioner of the Activator technique in the Ottawa Valley.