Our Pathologists’ Assistants

Pathologists’ Assistants are highly-trained, nationally certified professionals who provide critical services in the practice of pathology and diagnostic medicine. Learn more at the American Association of Pathologists’ Assistants.

David Masessa

Pathologists’ Assistant

David Masessa is a Nationally Certified Pathologists’ Assistant. He began working in Pathology at the Sacramento County Coroners Office in 1987 and relocated to Oregon in 1998.

In his off time he enjoys racing his bicycles and traveling.

Education and Training
Undergraduate 1991

California State University, Sacramento

Graduate School 1994

Quinnipiac University, Hamden, Connecticut

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Brady Bentler

Pathologists’ Assistant

Brady Bentler is a Nationally Certified Pathologists’ Assistant. He was born and raised in Michigan before moving to Oregon in 2023 to begin his professional career, where he has been with Vista Pathology ever since.

In his free time he enjoys hiking, camping, fly fishing, and exploring as many of the national parks as he can. He is also an avid sports fan and cheers for all Detroit teams. He is a loving father to his cat, Beans, and his pacman frog, Chef.

Education and Training
Undergraduate 2021

Central Michigan University, Mount Pleasant, MI

Graduate School 2023

Wayne State University, Detroit, MI

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Stephanie Cao

Pathologists’ Assistant

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