STOCKTON, CA, June 22, 2026 /24-7PressRelease/ -- Todd Quevillon Barker, PhD, has been included in Marquis Who's Who. As in all Marquis Who's Who biographical volumes, individuals profiled are selected on the basis of current reference value. Factors such as position, noteworthy accomplishments, visibility, and prominence in a field are all taken into account during the selection process.

Dr. Barker is a medical device quality engineering and regulatory systems leader whose career spans more than three decades in diagnostics, life sciences instrumentation, and software-enabled medical technologies. In 2023, he founded Todd Barker Consulting LLC, where he advises medical device and life sciences organizations on quality management systems, regulatory compliance, product development governance, and the implementation of emerging technologies within regulated environments.

His recent consulting engagements have included work with Verily Life Sciences (Alphabet) and Thermo Fisher Scientific, supporting Software-as-a-Medical-Device (SaMD) development, FDA Quality Management System Regulation (QMSR) implementation, European In Vitro Diagnostic Regulation (IVDR) compliance, cybersecurity process development, and quality system modernization initiatives.

Earlier in his career, Dr. Barker held leadership positions with Apple Health and Roche Diagnostics. At Apple, he established a specification-developer quality management system aligned with Agile development practices and medical device regulatory requirements. He also provided quality oversight for design transfer activities, supplier qualification, and global manufacturing collaboration supporting regulated health technologies.

During more than two decades with Roche Diagnostics and its affiliated business units, Dr. Barker led quality engineering and quality systems initiatives supporting molecular diagnostics, genomic sequencing platforms, companion diagnostics, oncology diagnostics, and software-enabled healthcare technologies. His responsibilities included global quality management, supplier quality, software quality assurance, risk management, and regulatory compliance across multiple international business organizations.

Dr. Barker began his career in medical device development following completion of doctoral studies in analytical chemistry and chemometrics. His early interest in computing and data analytics led him to work with pioneers in the emerging field of chemometrics, creating a foundation for a career integrating analytical science, software, instrumentation, and quality systems. Early in his industry career, he contributed to the development of nucleic acid testing technologies used to screen donated blood for infectious diseases, helping improve the safety of the global blood supply and reduce the risk of transfusion-transmitted infections.

In addition to his industry contributions, Dr. Barker has authored and co-authored scientific publications in chemometrics and analytical science. He remains particularly interested in the evolving role of artificial intelligence, machine learning, and cybersecurity within regulated medical device development.

Dr. Barker earned Bachelor of Science and Master of Arts degrees in analytical chemistry from the University of South Dakota, where he studied under Professor Royce C. Engstrom. He subsequently earned a Doctor of Philosophy in analytical chemistry and chemometrics from the University of Delaware under the mentorship of Professor Steven D. Brown, a pioneer in the field of chemometrics. Following completion of his doctoral studies, he pursued postdoctoral research in bioanalytical chemistry and biosensor development at the University of Hawaii under Professor Garry A. Rechnitz.

Throughout his career, Dr. Barker has emphasized collaborative leadership, mentorship, and the development of practical quality systems that enable innovation while maintaining patient safety and regulatory compliance.

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