Executive Team and Leadership

Principle Diagnostics

At Principle, family matters most.

Executive Team

  • Allan Zyller – Chairman, Managing Partner

  • Ahmad Adam Aziz – Chief Executive Officer, Managing Partner

  • Gina Mattes – Founder, Chief Operations Officer 

  • Ahsan Amin – President of Business Development

  • Lab Director – Xuehui Liu MD, MS

Here at Principle, our executive team operates as a family unit. Each member comes with a vast set of skills and experiences from different medical verticals and career paths to create a seamless operation and pleasant customer experience.


2550 Brodhead Road, Suite 105

Bethlehem, PA 18020