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

Happy Family Day weekend from MCSI! Stay safe, stay well…


Stay prepared for COVID-19 Always be prepared in case you or a member of your household contracts COVID-19. Keep essential supplies on hand, and limit the spread of infection by continuing to physically distance and practising hand hygiene. Full details, including suggested supplies and how to limit the exposure, can be found here: https://www.canada.ca/content/dam/phac-aspc/documents/services/publications/diseases-conditions/coronavirus/covid-19-be-prepared-infographic/covid-19-be-prepared-infographic-eng.pdf


                   Merry Christmas and Happy New Year! From all the Staff and Associates at McCarthy Consultant Services, Inc. we send our best wishes to you, your colleagues, and your families, for a joyous Holiday. We would like to thank our clients for working through the changes in … Continue reading Happy Holidays!!


MCSI Covid-19 Action Plan To our valued clients:   With the ongoing COVID-19 situation MCSI is continually monitoring Government of Canada updates and we have an action plan in place to mitigate impacts on our business operations. The MCSI office remains open; however, we are taking steps to limit exposure. Our staff and associates have … Continue reading MCSI Covid-19 Action Plan


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
Fax: 905.836.0006
E-Mail: mail to:accounting@mccarthyconsultant.com


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