Roshal Imaging Leadership

Meet the team leading the way for Roshal Imaging.

Calvin Johnson (CJ)
Chief Executive Officer
Calvin Johnson (CJ)
Chief Executive Officer

As CEO, CJ is responsible for leading Roshal Imaging’s business strategy and strengthening the company’s partnerships with healthcare organizations. 

He brings 36 years of management experience to this role and has worked in the healthcare industry for the past 18 years. He previously served as CEO of Comprehensive Pharmacy Services (CPS) and Hospital Division President at Sodexo. After graduating from the United States Military Academy at West Point, he served for five years in the Army. CJ holds a Bachelor of Science from the United States Military Academy and a Master of Business Administration from Northwestern University.

John Thomas
Chief Operations Officer and Co-Founder
John Thomas
Chief Operations Officer and Co-Founder

In his role at Roshal Imaging, John oversees the strategic direction and business operations by leading teams in developing and executing the shared services model across company partnerships. 

Throughout his career, John has served in several leadership roles, including more than 20 years in product management, engineering services, and commercial operations at GE. Additionally, he spent 16 years in system engineering and integration at GE. John has a Six Sigma Green Belt certification and a Master of Science in Engineering and Industrial Management from Drexel University.

Usha Thomas
Senior Vice President, Clinical Operations and Co-Founder
Usha Thomas
Senior Vice President, Clinical Operations and Co-Founder

As SVP of Clinical Operations, Usha is responsible for the strategic direction and execution of imaging service delivery. She sets clinical standards and equips Roshal Imaging technologists to provide exceptional, person-centered care while maintaining compliance.

Usha has more than 25 years of ultrasound technical and business leadership experience, and more than 20 years of experience working in hospital ultrasound radiology leadership. She is certified with the American Registry for Diagnostic Medical Sonography, and holds a Master of Science in Sociology from the University of Kerala.

Atul Dhingra
Chief Medical Officer
Atul Dhingra
Chief Medical Officer

Dr. Atul Dhingra joined Roshal Imaging as CEO/CMO in 2013. He has been a board-certified ER physician for 25+ years and also has completed an emergency medical services (EMS) fellowship.

His other roles have included: COO and Managing Partner of Sphier Emergency Room, Assistant Medical Director for the Houston Fire Department, and Assistant Medical Director for Emergency Room Services at St. Luke’s Episcopal Hospital. Additionally, Dr. Dhingra has worked as a free-standing ER industry pioneer consultant.

Bruce Murphy
Acting Chief Financial Officer
Bruce Murphy
Acting Chief Financial Officer

Bruce is a Senior Vice President of Finance for Consero Global, which provides finance as a service for middle market companies. In this role, he supports software, healthcare, and consulting companies, and  leads the company’s CFO Services practice.

With over 30 years of experience, Bruce has held senior financial management positions in consumer products, private equity, real estate development, healthcare, Internet commerce, manufacturing, and broadcasting. He has a bachelor’s degree in Accounting and Economics from the University of Texas at Austin and is a Certified Public Accountant.

Amy Madden
Senior Vice President, HR and Business Transformation
Amy Madden
Senior Vice President, HR and Business Transformation

With more than 20 years of cumulative experience in human resources and business transformation, Amy specializes in HR strategy development and implementation, as well as transformation-wide portfolio management, strategic planning, and comprehensive solution development and deployment.

Prior to Roshal Imaging, Amy served in multiple HR and business transformation roles with Sodexo. She holds a Bachelor of Science in Human Resource Management and Public Relations from California State University-Hayward, as well as certifications in change management, Six Sigma, and scrum/agile project management.

Sarah Kerns
Senior Vice President, Business Development
Sarah Kerns
Senior Vice President, Business Development

In this role, Sarah leads Roshal Imaging’s corporate sales strategy, market intelligence, go-to-market planning and execution, and strategic partnerships.

Sarah has more than 20 years of experience in sales and business development and has worked in various areas across the healthcare space. Prior to Roshal Imaging, she was Senior Vice President of Business Development at Comprehensive Pharmacy Services, and has held roles with Tobii DynaVox, GlaxoSmithKline, and PepsiCo North America. Sarah has a Bachelor of Science from the University of Delaware.

Roshini Joseph
Vice President, Strategic Initiatives
Roshini Joseph
Vice President, Strategic Initiatives

Roshini is responsible for overseeing the implementation of business systems and processes that streamline operations and advance company growth for Roshal Imaging.

She has more than 10 years of experience in project management and process improvement, and more than five years of experience in healthcare software integration and project implementation leadership. Previously, she worked for Presence Health and Intercede Health. Roshini earned a Master of Business Administration with a focus on Management of Technology from the University of Houston-Clear Lake.

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