About Ellie Diagnostics

Putting wellness at the forefront of animal health.

Ellie Diagnostics is a full-service veterinary wellness and diagnostics laboratory dedicated to transforming animal health by making wellness testing more accessible.

At Ellie, we believe wellness bloodwork is essential, and should be standard and attainable for every pet, every year.  With Ellie, veterinarians can enjoy great quality and prices with no contracts, minimums or unexpected price increases. 

The result? Healthier pets, and healthier profits.

Our Commitment...

A better wellness experience.

Plus, all the perks of our full-service diagnostics:

Our Story

How Ellie Diagnostics was Started

Mark Decourcy

Founder & CEO

Mark DeCourcy is the founder and CEO of Ellie Diagnostics. Mark has deep experience in healthcare diagnostics but was inspired to shift into animal health by his dog, Ellie, after a bad experience with diagnostics at the vet consisting of a high price tag and nothing to show for it. He has assembled a team of animal health experts to develop a suite of innovative services to improve that experience and to help animals live longer, healthier lives.

Prior to founding Ellie, Mark served as Vice President of Strategy at True Health Diagnostics where he played a critical role in driving strategic growth and oversaw mergers & acquisitions.

Mark holds an MBA and Masters of Science in Finance from The University of Texas at Dallas, and a BS from Texas Tech University with majors in Finance and Economics.


Chief Dog

Ellie is a 12 year old Cavachon who oversees general operations with a focus on treat distributions. She has 12 years of experience being alive and graduated with honors from having Mark take her on longer walks than necessary in 2015.