Jay Mazelsky
CEO
IDEXX Laboratories
Leadership History
3 leaders · Full leadership timeline
Jay Mazelsky is the CEO of IDEXX Laboratories.
| Name | Role | From | To | Years in role |
|---|---|---|---|---|
| Jay Mazelsky | CEO | — | Present | — |
| Jonathan Ayers | CEO | — | Present | — |
| Brian McKeon | CEO | — | Present | — |
IDEXX Laboratories represents one of the most remarkable compounders in global healthcare, pioneering the commercialization of modern biological diagnostics for companion animals (dogs and cats). As pet ownership has transitioned from utilitarian pet keeping to the profound humanization of pets—where owners treat animals as beloved family members willing to spend whatever is necessary on medical care—veterinary medicine has evolved into a sophisticated, technology-rich discipline. IDEXX equips veterinary clinics with comprehensive in-clinic blood and urine testing systems, connects them to a worldwide network of specialized reference pathology laboratories, and operates the cloud software that runs the entire clinic workflow. Operating with recurring revenue exceeding 90% and operating margins above 30%, IDEXX is a peerless market leader with virtually insurmountable switching barriers.
IDEXX operates a classic, highly profitable razor-and-blade business model centered on long-term veterinary clinic relationships. The company places in-clinic diagnostic instruments (chemistry, hematology, and urinalysis analyzers) in veterinary clinics under multi-year customer commitments (typically 6-year contracts). Once an analyzer is installed, the clinic must exclusively purchase IDEXX's proprietary, single-use test slides, reagent packs, and calibration cartridges for every diagnostic test run on a sick or wellness pet, generating recurring, high-margin consumable revenue. CAG Diagnostics Recurring Revenue (consumables, reference lab tests, and software subscriptions) accounts for over 90% of total company revenue. In veterinary software, IDEXX charges recurring monthly SaaS fees for cloud practice management platforms (ezyVet) and digital imaging storage.
CEO
CEO
CEO
Jay Mazelsky serves as the President and Chief Executive Officer of IDEXX Laboratories.
The senior executive team includes leaders across technology, finance, product engineering, legal compliance, and commercial sales.
IDEXX Laboratories adheres to high standards of corporate transparency, data privacy, stakeholder alignment, and long-term value creation.
IDEXX Laboratories maintains its principal executive offices in Westbrook, United States.
Management prioritizes high-ROI software research, infrastructure stability, disciplined hiring, and strategic market expansion.
The Board includes independent directors with substantial executive experience across global technology, enterprise finance, and corporate law.
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