Meet Our Core Team

Clinical Tools, Inc. (CTI) is a diverse group of staff with expertise in medicine, psychology, public health, basic sciences, programming, project and program management, gaming, information technology and communications.

Brad Tanner, MD (President)

Dr. Tanner is a Psychiatrist and President of Clinical Tools. At Clinical Tools, he is responsible for technological and curriculum development, evaluative research, and marketing of products. His goal is to integrate technology into health care to enhance best practices and improve health outcomes.

He lives in Chapel Hill, NC with his wife and 3 active children. Dr. Tanner is an avid Utah skier and frequently visits Snowbird and Alta. He also enjoys running, commuting to Clinical Tools via bicycle, windsurfing, traveling with family, and cooking healthy meals.


Mary P. Metcalf, PHD, MPH (Vice President)

Dr. Metcalf brings her diverse background to Clinical Tools’ project by concentrating on adult learning, and qualitative and quantitative assessment. She served as Principal Investigator for 3 SBIR Phase//Phase II projects, leading to EndingSuicide.com, and TobaccoCME.com, as well as BrainTrain4Kids.com.

Dr. Metcalf enjoys doing yoga, anything that involves being outdoors, reading F/SF, and drinking black tea. Most of all, she enjoys spending time with her family, which includes 3 amazing and confusing children, and cleaning up the messes they leave behind.


Karen Rossie, DDS, MS, PHD (Research Scientist)

Dr. Rossie brings a diverse background in oral medicine, pathology, psychology, and health professional education to CTI. She served as Principal Investigator on a Phase I SBIR project related to training medical students in pain and addiction and has led or contributed to multiple other CTI projects for training health professionals and students in pain management, motivational interviewing, brief interventions for substance abuse, and treatment of obesity, opioid addiction, alcohol use disorder, and tobacco cessation.

Dr. Rossie is interested in health, positive psychology, the psychology of games, and advances in medicine and loves dancing, being with family, murder mysteries, music, and a variety of outdoor activities.


Kimberly Lynn Workman, BA, CORE, PHCP, JOMC cert., MA (Project Director and Digital Content Designer)

Kimberly is a key research developer, project coordinator, and digital content designer with Clinical Tools. She has a Bachelor of Arts in American History, with a double minor in Religious History and Creative Writing, a CORE graduate certificate in Public Health, a Field Epidemiology graduate certificate, a Technology and Communication graduate certificate, and a Master of Arts in Technology and Communication all from the University of North Carolina at Chapel Hill.

Since she began with Clinical Tools, Inc. in 2002, she has contributed to the development and implementation of multiple grant projects focusing on medical school education, risk behavior prevention, and child/adolescent health, as well as presenting resulting outcome measures at a number of conferences throughout her time with Clinical Tools. In addition, Ms. Workman has undertaken various levels of content management and website design in the areas of Drupal, XML, HTML, CSS, PHP, and Javascript.

Kimberly has been a member of American Mensa since 2008. She is currently a staff writer and contributor for the media blog Fandomania and enjoys making contributions to the fandom community. Kimberly has done in-depth research into fair use, fandom community structures, the relationship between media owners and fan creators, and the identification fan creators have with their source material. And she attributes her undying love of Canada to the influences of fandom as well. She hopes to make a return visit to our northern neighbor again soon.


Katie Stokes, BS, MA (Research Associate)

Katie received her Bachelors degree in Marine Biology from UNC-Wilmington and her Master of Arts in Teaching from UNC-Chapel Hill. She began her career in ag-biotech as a plant genetics scientist in Research Triangle Park. After she obtained her masters degree, she taught high school science classes in the NC public school system as well as private home school instruction through UNC-Chapel Hill.

At Clinical Tools, Katie is currently focusing on the Obesity Tx Challenge project. The goal of this project is to produce case-based simulations to engage medical students in an interactive curriculum, preparing them for their role in diagnosing and treating patients with weight issues.

Katie has a love for permaculture landscape design as well as vertical aquaponic systems. Her little minions include a daughter, a dog, two cats, and a chicken.


Christina Tallman, MS (Research Assistant)

Christina recently graduated from NC State with her Masters in Physiology, moving to focus on human health after her undergrad in Zoology.

Outside of work, Christina enjoy cooking, crafts, writing, kayaking, and hanging out with her two cats.


Denise Donatien-Coder, BA (Research Assistant)

Denise received her BA in Psychology from the State University of New York (SUNY) at New Paltz. While attending SUNY New Paltz, she worked as a research assistant for two years in the Lab for Brain and Cognition investigating orthographic effects on letter identification. She also coded for two meta-analyses exploring goal consensus and collaboration in relation to treatment outcomes. Her research interests include cognitive psychology, cognitive neuroscience, psychometric assessment and statistics.

As a Research Assistant at CTI, Denise works on a number of different tasks, including the Obesity Tx Challenge Project, a virtual-based curriculum for physicians-in-training to improve clinical interactions with patients regarding weight loss and management.

In her spare time, Denise enjoys spending time with family and friends, helping people in the community, knitting, yoga, and watching movies. She plans to attend graduate school in the future.


Nora Nelson, BA (Graphic Designer)

Nora received her bachelors degree in Visual Communication with a New Media minor from Seattle Pacific University. Her background is in branding, 2D design, and web design.

At Clinical Tools, Nora works developing webpage and gaming application layout and design, focusing on branding, consistency, user experience, and navigation.

Nora loves to be outdoors, especially camping and hiking. She enjoys music and spending time with friends and family.


Benjamin Reinhart, BS (Web Developer)

Benjamin Reinhart has a BS in Mathematics from the University of Maryland. His specialties are statistics and game theory and how they relate to interactive design.

As a Web Developer at Clinical Tools, Benjamin helps create and test serious games and applications that improve medical education and public health.

In his free-time, Benjamin designs and plays tabletop games.


Corwin Emory, BS (Programmer)

Corwin has a Bachelor's of Science in Game Design which he received from Full Sail University. His focus is on is on intuitive design and usability.

As a Programmer at Clinical Tools, Corwin works with C# in Unity to develop and test serious game projects on multiple platforms.

Corwin spends his free time, playing and designing both analog and digital games with friends and family.