WorkCare Leadership Team

include research into innovations to deliver practical, integrated employee health management solutions across the care continuum. In 2025, Dr. Greaney released his latest book: "My Harley: Drive Your Own Health Outcomes" introducing readers to the My Harley healthcare app—a tool designed to put individuals in the driver’s seat of their own health journey. In 2021, Dr. Greaney received the President’s Award from long-standing WorkCare client Costco (2008), the company’s highest honor, in recognition of exceptional assistance during the COVID-19 pandemic. Dr. Greaney is board-certified in preventive medicine and occupational medicine and board-eligible in toxicology. In addition to serving on Partners in Health boards, Dr. Greaney is actively involved in WorkCare’s strategic product development, client relations, thought leadership and physician oversight initiatives.

He brings 20+ years of business-to-business healthcare experience that includes leadership roles in laboratories, healthcare technology, product manufacturing, and occupational health services. He holds degrees in communications and business administration and specializes in delivering commercial growth, operational excellence, and organizational leadership. Aaron and his family live in Overland Park, Kansas.

Her responsibilities include financial oversight of merger and acquisition integration functions and international operations. Maria has over 20 years of experience building and leading finance teams in complex national and multinational companies. Prior to joining WorkCare, she was the Senior Vice President and Corporate Controller for a multinational environmental engineering group, where she had an active role in taking the company through a successful initial public offering. Before moving to the environmental industry, she held several management and controller positions in the aerospace industry. A native of Brazil, she started her career at Deloitte in its São Paulo office. Maria has a law degree from PUC/SP Pontifícia Universidade Católica de São Paulo with a concentration in corporate law and economics, and she is a member of the Brazilian Bar Association. She moved from Brazil to the U.S. to pursue her work in the aerospace industry. Maria lives with her husband and son in Orange County, Calif., where she enjoys painting as a hobby and weekend bike rides.

Sammie’s career is marked by a passion for optimizing business operations and fostering a culture of innovation. Prior to joining WorkCare, she has held senior executive roles with prominent employment screening and biotech firms, where she was instrumental in scaling revenue streams and implementing cutting-edge solutions.

her tenure, she managed implementation of WorkCare’s COVID-19 testing program, including onsite clinical support and the provision of thousands of COVID-19 diagnostic test kits to U.S. companies and their employees. As Senior Vice President of On-Sites, Allison oversees operations related to all providers staffed at employee locations + clinical review and management services. Allison has a bachelor’s degree in communications from California State University, Fullerton.

with HR Service, Inc. Kay has over 20 years of HR experience and has served in a variety of roles in a diverse and wide range of industries. Kay is passionate about building high- impact HR programs and initiatives that support business strategy and drive employee engagement. She earned her Bachelor’s Degree in Psychology from Millersville University of Pennsylvania, and a Master’s Degree in Human Resource Management from Stevens Institute of Technology.

high client satisfaction scores. He was promoted to Vice President, COVID Operations, in January 2022, with responsibility for expanding COVID-related services, providing support for nationwide entertainment productions, delivering virtual and onsite proctored testing, launching a corporate daily testing program, and in April 2022, transitioning COVID screening from the Incident Intervention Program to the COVID department. Prior to joining WorkCare, Justin worked in the entertainment industry managing commercial, music video, TV show and movie productions, which allowed him to fine-tune his ability to manage client and employee expectations.

includes onsite occupational health nursing. She obtained her Bachelor of Science Degree in Nursing at Salve Regina University, Newport, RI. She is a certified Case Manager.

strategic oversight of the Industrial Athlete Program. His focus on Prevention Services includes collaboration with Wellness Solutions, a WorkCare Company, to create corporate-facing solutions, including a comprehensive ergonomics program, and developing a new approach to pre-hire evaluations. His industry experience includes job demand analyses, employee education and training, and consulting on workplace health risks. He joined WorkCare after managing an industrial athlete program at a major utility and serving as head athletic trainer for the State Center Community College District, Reedly, Calif. A Certified Athletic Trainer, he earned his Master of Science degree in kinesiology at the University of Texas at Tyler.