Where Experience
is Everything.

Precefi’s network brings together leading KOLs in dermatology and ophthalmology, delivering the expertise, credibility, and proven outcomes that sponsors demand.

A Site Network
Built Different.

Precefi represents some of the most experienced dermatology and ophthalmology sites in the Americas, including sites with Phase I capabilities. Our team brings decades of leadership at companies like Allergan, Regeneron, and AstraZeneca, with direct contributions to the development and approval of products including Botox®, Eylea®, Kybella®, and Opzelura®. Combined with our biomarker services, Appiell virtual platform for real-time patient data, and a one contract, one price model. Precefi delivers a partner, not just a site list.

Explore Our Network of Dermatology and
Ophthalmology Sites

Our Partnerships with Global CROs

The Latest from Precefi

  • Conversation with Dr. Peter Lio: The most sought after KOL in Atopic Dermatology

    In this insightful video podcast, one of the most sought-after Key Opinion Leaders in atopic dermatitis, Dr. Peter Lio, explores the evolving landscape of AD treatment and the promise of emerging therapies.

  • World Glaucoma Week 3/14-18: Expert Perspective on Protecting Vision

  • AAD2026 in Review

  • Precefi attends MOPD, February 2026 in Miami Beach, FL

Your Next Trial
Starts Here.

Reach out to learn how Precefi delivers the expertise, sites, and simplicity your program needs.