Douglas S. Johnson, ATC, EES, CLS, is Chief Science Officer and Senior Vice President at Multi Radiance Medical and Chief Science Officer at PhotoOpTx. With more than 25 years of experience in sports medicine, rehabilitation, and medical technology, he has led global research and regulatory strategy across photobiomodulation, shockwave, radiofrequency, and imaging platforms. As a Senior Visiting Fellow at LaPIT (Brazil), he collaborates on translational studies in neurology, ophthalmology, and performance medicine. A sought-after educator, Douglas has also coordinated Laser Therapy University for over 15 years, training clinicians worldwide in evidence-based, non-pharmaceutical approaches to pain and recovery.