Indicator Sciences was founded by Drs. Patrick Hymel and Stephen Brossette, the physician scientists who built MedMined, a hospital infection prevention analytics company acquired by Cardinal Health in 2006. MedMined's work was advising nursing unit leaders from hospital data, and that is the work the team has continued. With Drs. Daisy Wong and Ning Zheng, the science team has worked together across three companies and more than two decades of moving data into and out of hospitals.
CareEffects began in 2020, when accounts of nurse exhaustion during the pandemic raised a question the team was equipped to take on: whether the strain a nurse carries could be measured fairly from data hospitals already collect. The first paper, posted as a preprint that November, showed that fine-grained fixed-effects analytics could make the comparison fair. Dr. Ecoee Rooney, a nursing professional development leader, was consulted on the work from that time and has shaped it since. Six years of research have followed, including three years of live monthly use at Troy Regional Medical Center beginning in 2023. Nursing leads the service, and its practice is set by nurse leaders.

Chief Nursing Officer
Dr. Rooney spent thirteen years at Ochsner Health, most recently as Director of Nursing Leadership Development for the system, and served as President of the Louisiana State Nurses Association from 2020 to 2023. She holds a doctorate in executive nurse leadership and has advised the CareEffects work since 2020. She se
Chief Nursing Officer
Dr. Rooney spent thirteen years at Ochsner Health, most recently as Director of Nursing Leadership Development for the system, and served as President of the Louisiana State Nurses Association from 2020 to 2023. She holds a doctorate in executive nurse leadership and has advised the CareEffects work since 2020. She sets the nursing practice of the service: how findings are read and presented from a nurse's perspective, what a conversation guide must do, and how the monthly session with executive and unit leaders is conducted.

Chief Executive Officer
Dr. Hymel is a residency-trained emergency physician and has spent more than twenty-five years building healthcare safety analytics companies. He co-founded MedMined, acquired by Cardinal Health in 2006, and MedSnap, a medication authentication system, and he co-authored the 2020 paper that began the CareEffects wor
Chief Executive Officer
Dr. Hymel is a residency-trained emergency physician and has spent more than twenty-five years building healthcare safety analytics companies. He co-founded MedMined, acquired by Cardinal Health in 2006, and MedSnap, a medication authentication system, and he co-authored the 2020 paper that began the CareEffects work. At Indicator Sciences he leads the company and works directly with client hospital leadership on implementation and results.

Chief Science Officer
Dr. Brossette is a physician scientist whose doctoral work in the late 1990s, on finding patterns of infection in hospital data, became MedMined, which he co-founded in 2000 and which grew to more than 600 hospitals. MIT Technology Review named him to its Innovators Under 35 in 2002. He later co-founded MedSnap. He is
Chief Science Officer
Dr. Brossette is a physician scientist whose doctoral work in the late 1990s, on finding patterns of infection in hospital data, became MedMined, which he co-founded in 2000 and which grew to more than 600 hospitals. MIT Technology Review named him to its Innovators Under 35 in 2002. He later co-founded MedSnap. He is first author of the 2020 paper that began the CareEffects work, brought fixed-effects panel methods from econometrics into the measurement of nursing strain, and leads the science team that designs and reviews every model the service uses.

Chief Quality Officer
Dr. Wong's doctoral work in the late 1990s was on how nurses and infection control experts interpret patterns in hospital data together, the collaborative half of the methods that became MedMined. She has worked with Dr. Brossette since, across MedMined, MedSnap, and Indicator Sciences, leading software engineering an
Chief Quality Officer
Dr. Wong's doctoral work in the late 1990s was on how nurses and infection control experts interpret patterns in hospital data together, the collaborative half of the methods that became MedMined. She has worked with Dr. Brossette since, across MedMined, MedSnap, and Indicator Sciences, leading software engineering and quality. At Indicator Sciences she owns data quality from the hospital's extract to the delivered report, and is the company's designated security officer.

Chief Data Scientist
Dr. Zheng holds a PhD in industrial engineering with minors in applied statistics and computer science, and his doctoral work used Bayesian statistical models and optimization to find interpretable structure in large text collections. He has worked with the science team across MedMined, MedSnap, and Indicator Sciences,
Chief Data Scientist
Dr. Zheng holds a PhD in industrial engineering with minors in applied statistics and computer science, and his doctoral work used Bayesian statistical models and optimization to find interpretable structure in large text collections. He has worked with the science team across MedMined, MedSnap, and Indicator Sciences, including the computer vision behind MedSnap's medication authentication. At Indicator Sciences he and Dr. Brossette work through the hardest design questions in the models that produce each month's findings.
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