Hayes Leadership Team

Hayes’ leaders exemplify clinical and scientific excellence and embrace our commitment to serve our clients with passion and unbiased data. Clients trust our guidance, and value our consultative engagement and responsiveness in providing the answers, data, and reporting they need.

Teri Olsen Spina

Teri Olsen Spina

Vice President, Payer Solutions

 

Teri Olsen Spina is Vice President of Payer Solutions. Leveraging her extensive experience in healthcare administration and educational publishing, she is responsible for…

Petra Nass, PhD

Petra Nass, PhD

Senior Scientific Officer, Executive Director Evidence Solutions

 

Dr. Nass is responsible for ensuring the scientific and methodological quality of the Hayes evidence products​…

David Zieve, MD, MHA

David Zieve, MD, MHA

Medical Director, Hayes

 

As Medical Director at Hayes, David Zieve works closely with the Evidence Solutions analysts and provides clinical oversight for a variety of client solutions…

Michelle Ostrander, PhD

Michelle Ostrander, PhD

Scientific Director, Evidence Analysis

 

As Scientific Director, Dr. Ostrander has oversight of the development and editorial review of health technology assessments and comparative effectiveness​…

Shannon Brode, MPH

Shannon Brode, MPH

Scientific Director, Evidence Analysis

 

Shannon Brode co-leads a team of analysts charged with writing methodologically rigorous health technology assessments on new and emerging health technologies…

Renee Balliet, PhD, MBA

Renee Balliet, PhD, MBA

Scientific Director, Precision Medicine

 

Dr. Renee Balliet is responsible for the rapidly expanding product line of Precision Medicine. This includes critical content clients need when managing genetic and​…

Beth Bontemps, MS

Beth Bontemps, MS

Scientific Director, Horizon Scanning

 

Beth Bontemps employs her clinical and research expertise as she monitors new, emerging, and controversial technologies. Her efforts are critical to provider and payer clients

Meredith Calloway, MS, PMP

Meredith Calloway, MS, PMP

Associate Scientific Director

 

Meredith Calloway specializes in Health Technology Assessment (HTAs) and systematic reviews. A certified project manager, she oversees contract and custom work for clients​…