About Us

transforming healthcare with evidence

Our mission is to improve the quality and value of healthcare through the use of evidence.

Hayes, Inc. is driven by a deep passion to improve the health – and therefore lives – of those we touch through the clients we serve. The realization that the well-being of countless people may depend on our efforts spurs each employee to deliver extraordinarily thorough, scrupulously researched reports and support.

Our clients, who include hospitals, healthcare systems, government agencies, health plans and employers, know they can count on us to be fiercely unbiased when analyzing the efficacy and value of medical technology and practices. It is at the core of our corporate DNA.

Founded in 1989 by Winifred S. Hayes, our proprietary Hayes Rating has become the industry’s benchmark. At Hayes, we have repeatedly seen proof that evidence-based, clinically sound processes improve both the quality and the cost-effectiveness of healthcare delivery while stimulating performance improvement.

Hayes’ focus on evidence-based assessments of health technologies underlies all aspects of our research and consulting activities. We evaluate a wide range of medical technologies and clinical programs to determine their impact on patient safety, health outcomes, resource utilization and return on investment. We also help our clients integrate evidence into their processes and decisions.


How We Help

  • Health plans and government programs use our unbiased evidence to develop defensible and transparent coverage policies, care management protocols and best practice guidelines.
  • Hospitals and healthcare systems rely on Hayes as a resource for strategic initiatives focused on safely reducing the cost of care while improving quality and clinical outcomes.

Ready to get started? Review our proven process and complete a needs assessment to get on the right path.

Process_Assess Process_Analyze Process_Solve Process_Implement Process_Evaluate

Winifred S. Hayes, PhD, RN, ANP
Founder and CEO of Hayes, Inc.

Dr. Hayes founded Hayes, Inc. in 1989 in response to a growing need in the healthcare industry for evidence-based assessments of health technologies. Under her leadership, Hayes, Inc. has become an industry leader in providing unbiased, timely, clinically focused, evidence-based research and analysis to health plans, hospitals, managed care organizations, government agencies, and healthcare systems. Read more.

Our Leadership Team

Maura Connor, Chief Operations Officer
Christina Dietrich, Chief Financial Officer
Dr. David Zieve, Medical Director
Dr. Petra Nass, Sr. Scientific Officer; Director, Research & Innovation 



Hayes is a certified woman-owned small business (WOSB). The business is majority owned, controlled, and operated by a woman and meets rigorous national standards.