We Solve Your

Regulatory Puzzles

Providing Quality Service

Since it’s founding in 1981 by David McCarthy, McCarthy Consultant Services Inc. (MCSI) has played a vital role in the world of Canadian regulatory affairs. Shaped by the belief that sound regulatory management is the key to business success, MCSI has evolved into an industry leader across Canada and throughout the world. MCSI is trusted and valued by the pharmaceutical, biotechnology, medical device, food, natural health products and cosmetic industries for its efficient, timely, and effective regulatory work.


News and Events

MCSI President Stephen McCarthy is attending the DIA’s (Drug Information Association) conference in Ottawa. The Canada Annual Meeting will deliver a comprehensive overview of the current pharmaceutical, medical device, and/or diagnostic landscapes in Canada.


Happy Thanksgiving from MCSI and our Associates! Our offices will be closed Monday October 9th, to spend the holiday with family and friends.


MCSI is looking forward to a long summer weekend! Our offices will be closed Monday August 7th, for the Civic Holiday. Have fun and be safe!


Happy Canada Day from MCSI!! Happy Canada Day long weekend! Our offices will be closed on Monday July 3rd, to celebrate with friends and family. Have a great long weekend!!


We invite you to contact us!

McCarthy Consultant Services Inc.
14-320 Harry Walker Parkway North,
Newmarket, Ontario Canada L3Y 7B4

Phone: 905.836.0033
E-Mail: accounting@mccarthyconsultant.com


Let’s Get In Touch