About Us


Warren Ratliff Chief Executive Officer and President Warren Ratliff leads MDmetrix’s mission to empower clinicians with the outcomes information they need to transform patient care. Warren brings to MDmetrix extensive leadership experience across a wide range of HCIT businesses, including software systems for hospitals, health systems, ambulatory clinics, and payers.

Most recently, Warren was co-founder and chief operating officer of Caradigm, a leading population health management company acquired by GE Healthcare. Under Warren’s leadership, Caradigm was recognized as a breakout leader in the analytics and care management solutions required for population health. Prior to Caradigm, Warren served as vice president for GE Healthcare Enterprise Solutions, where he helped develop new software products while also turning around operations for legacy enterprise and departmental businesses. Earlier, Warren held several executive roles across McKesson’s provider and payer technology divisions.

Before focusing on healthcare, Warren supported technology businesses as an attorney. After clerking with the United States Court of Appeals for the Eleventh Circuit, Warren joined, and later co-chaired, the technology practice at Farris, Warfield & Kanaday. Warren holds a B.A. summa cum laude from Duke University, where he was an Angier B. Duke Scholar, and a J.D. from Yale Law School.


Dr. Dan Low, M.D., B.Med.Sci., MRCPCH, FRCA Chief Medical Officer As an expert in clinical systems improvement, Dr. Dan Low founded MDmetrix with the conviction that physicians can transform healthcare – if they are finally given the tools that they need to harness their clinical data. Dan brings over 20 years of clinical experience and visionary leadership to MDmetrix, with published research spanning patient safety, human factors, lean methodology, and medical technology. Dan has frequently been invited to present lectures, in the United States and internationally, on clinical transformation, physician engagement, continuous clinical improvement, and using real world data to improve patient outcomes.

Dan stays grounded in the everyday practicalities of delivering quality care by serving as an Attending Pediatric Anesthesiologist at Seattle Children’s Hospital, where he has fostered teams committed to continuous improvement. Dan is a passionate educator, and he has received numerous teaching awards as an Associate Professor of Anesthesiology at the University of Washington. As an expert in systems improvement and human factors, Dan has also been sought after for consultation on non-healthcare safety and team performance issues, including improving U.S. Navy operations and commercial aviation teamwork. Dan received his medical education in the United Kingdom at the University of Nottingham.


Matthew Goos Chief Technical Officer Matthew Goos leads the design and delivery of MDmetrix’s unique technology, as a co-founder deeply committed to the company’s vision for empowering clinicians with transformative analytic tools. With extensive experience across both startups and established companies, Matthew has a very practical vision for software delivery: simple is best. At the same time, Matthew is committed to a culture of innovation that challenges and supports MDmetrix’s engineers. Prior to MDmetrix, Matthew’s experience included software architecture, development, and management roles at Zulily, GlobalScape, Razorfish, GTE, and Medintell. Matthew is a graduate of Knox College.


Chad McAvoy VP Operations Chad McAvoy is responsible for delivering MDmetrix’s unique solutions to our customers. In this role, Chad ensures that the MDmetrix team understands each customer’s needs, and that MDmetrix’s tools are configured to best serve each customer’s care transformation priorities. Chad’s prior experience includes development and deployment of healthcare provider and payer applications at Optaio, ECS, eChargemaster, and United Healthcare. Additionally, Chad has deep experience in cloud deployment, data encryption, and project management, stemming from his leadership roles at companies including GlobalScape, Wachovia, and Dell. Earlier in his career, Chad served in the US Navy’s nuclear engineering program.



Lloyd Provost Lloyd Provost is Senior Fellow for the Institute of Healthcare Improvement, and a principal at Associates in Process Improvement. Lloyd is a process and systems expert who works worldwide to apply the science of improvement to healthcare and other fields. An accomplished author with a deep understanding of healthcare, Lloyd has written many papers on quality and measurement, and he has co-authored three books on planned experimentation, measurement, and the science of improvement. Lloyd’s expertise includes advising global leaders regarding collaborative improvement, planning, management systems, measurement, planned experimentation, and statistical process control. Lloyd holds a Bachelor of Science in Statistics from the University of Tennessee and a Master of Science in Statistics from the University of Florida.


Dr. Samuel R. Browd, M.D., Ph.D. Dr. Samuel R. Browd, M.D., Ph.D., FACS, FAANS, FAAP is Professor of Neurological Surgery at the University of Washington and Attending Neurosurgeon at Seattle Children’s Hospital. Sam is also the Director of the UW Medicine Sports Health and Safety Institute and the Medical Director of the Seattle Children’s Sports Concussion Program. Sam serves as Seattle Children’s Director of Hydrocephalus and Surgical Director of the Tone Management Program. Sam is adjunct Professor of Bioengineering and affiliate faculty of the University of Washington’s Foster School of Business, and he lectures internationally on biomedical innovation and commercialization. Sam serves as an unaffiliated neurologic consultant to the NFL and as an independent neurologic consultant to the Seattle Seahawks. Sam completed a combined M.D. and Ph.D. at the University of Florida, studying neuroplasticity and learning; his current research interests include concussion, hydrocephalus, and biomedical engineering solutions in neurological surgery and sports safety. In addition to his clinical, teaching, and research work, Sam has co-founded four venture-backed biomedical start-ups, and he serves as a University of Washington Presidential Entrepreneurial Faculty Fellow and is on the advisory board of CoMotion, the commercialization arm of the University of Washington. In 2016, Sam was recognized as the University of Washington School of Medicine “Inventor of the Year.”


Lisa Brandenburg Lisa Brandenburg is Chief Health System Officer for UW Medicine with responsibility for the operations of UW Medicine’s clinical entities, including Harborview Medical Center, Northwest Hospital & Medical Center, University of Washington Medical Center, Valley Medical Center, UW Neighborhood Clinics, UW Physicians, and Airlift Northwest. Previously, Lisa was President of Seattle Children’s Hospital, where she led 5,000 employees and a $1B/year P&L. Under Lisa's leadership, Seattle Children’s achieved double-digit growth in patient volume while increasing its national profile for excellent clinical care and innovative research – resulting in Seattle Children’s ranking as a top five national children's hospital by US News & World Report. Using innovative approaches to recruiting and retaining talent, to health and wellness programs, and to the use of lean methodologies to improve everyday processes for employees and customers, Lisa helped Seattle Children’s achieve recognition by Becker’s as one of the “150 Great Places To Work In Healthcare” and by Forbes as one of “America’s Best Employers.” Prior to joining Seattle Children’s in 2007, Lisa served as the Chief Operating Officer and Interim Executive Director of the UW Medical Center and played a key role in the formation of Seattle Cancer Care Alliance. Lisa has also served as Senior Advisor for Simpler Consulting, leading their academic medical center and pediatric healthcare system practices, and she has served on several healthcare and community boards. Lisa holds an MBA and a Masters in Public Health from the University of California, Berkeley.


Ryan Sousa Ryan Sousa is Chief Data Officer for Seattle Children’s Hospital, where he leads data and digital innovation and best practices for Seattle Children’s Hospital, Research, and Foundation. An accomplished leader, entrepreneur, and practitioner, Ryan has more than 25 years’ experience driving innovation and commercialization of transformative strategies and solutions that leverage analytics to improve the lives of customers, streamline operations, and compete in a rapidly evolving business landscape. Previously, Ryan was Senior Vice President for two startups acquired by Amazon and Nokia, and he led the successful implementation of large scale analytics at Amazon, Expedia, Starbucks, and MCI. Ryan has taught Healthcare Analytics at the University of Washington, and he has served as a faculty member at The Data Warehouse Institute. Ryan has been an advisor for numerous startups, and he is an accomplished author as well as a guest speaker at industry conferences. In addition, he has consulted globally, assisting companies with development and implementation of their analytic strategies to streamline operations and to personalize customer experience.


Gordon Nygard Gordon Nygard recently retired as Chief Investment Officer, Chief Operating Officer, and Treasurer for the Seattle Pacific Foundation, after serving Seattle Pacific University (SPU) for 30 years. In these roles, Gordon provided investment vision and leadership for SPU’s endowment, delivering strong financial returns crucial for SPU’s growth and stability. Gordon has served on the Executive Advisory Board of SPU’s School of Business, Economics, and Government, where he is also an adjunct instructor in Finance. Gordon speaks and consults on issues related to effective endowment management and has served in leadership roles on several non-profit boards. He holds both a B.A. in Economics and an M.B.A. from Seattle Pacific University.


Brian Phillips Brian Phillips serves as the Director of the Intellectual Property Core at Seattle Children, where he has played a vital role in MDmetrix’s realization of its vision for enabling physicians to transform their delivery of care. Previously, Brian was Senior Licensing Manager and Director of Internships with the Baylor Licensing Group at Baylor College of Medicine, and Brian had progressive responsibility at Rice University and Texas A&M University in their technology transfer offices. Brian has worked in the field of technology commercialization for more than a decade; during this time, he has been responsible for executing over 100 industrial contracts yielding millions of dollars in licensing and in industry-sponsored research. Brian has also been active in the Association of University Technology Managers (AUTM) where he has served as a speaker, Co-Chair of the AUTM Venture Challenge, and as a member of the Annual Meeting Program Committee. Brian has a B.S. in Biology from the University of Houston and a Ph.D. from the University of Texas M.D. Anderson Cancer Center – Graduate School of Biomedical Sciences.