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Dr. Karissa Horton and Dr. Jennifer Loyo met during their graduate studies at the University of Texas at Austin. While working together as graduate students on research projects for the Texas WIC program, they decided to capitalize on their entrepreneurial spirit and dedicate their professional work to doing everything in their power to improve the health and wellbeing of women, infants, and children and create equitable healthcare and health outcomes for all. They founded Limetree Research, a dynamic, woman and minority-owned public health research and evaluation consulting firm, based in Austin, Texas. Dr. Horton and Dr. Loyo are dedicated to improving lives through innovative translational research and evaluation.

"Jennifer and Karissa, co-founders of Limetree Research, continually go the extra mile to design, implement, analyze and report research evaluation outcomes and findings in a professional, but yet personable manner."

Connie Merriman, M.S.
Senior Advisor, Health Planning Chickasaw Nation Division of Health, Nutrition Services

"Limetree has been a pleasure to work with on evaluation of the Farm to Work program. They are engaged, responsive, thorough, timely, and care about the program. I enthusiastically recommend them for evaluation of any health behavior or environmental approach."

Christina Thi, MPH, RD, LD
Obesity Prevention Coordinator, Obesity Prevention Program Health Promotion and Chronic Disease Prevention Section Texas Department of State Health Services

"Dr. Horton and Dr. Loyo have deep knowledge and enthusiasm for incorporating innovative and mixed-methods into the design, implementation, and evaluation of large-scale studies."

Denise Herrera, Ph.D.
Program Officer, Robert Wood Johnson Foundation

"The professionalism and integrity of the staff of Limetree is evident in the high quality of the work they deliver."

Margaret Murphy
Retired Director, New Hampshire WIC

"Karissa and Jennifer have embraced the Walk with a Doc mission and goals since day one. Their perspective and expertise is unveiling meaningful data which we believe will take us to the next level."

Rachael Habash, M.A.
Executive Director, Walk with a Doc

Featured Services

Limetree Research is a full service research and evaluation consulting firm.

Expert Evaluation

Get expert evaluation services by Limetree Research, a leading public health research and evaluation firm

This is your opportunity to receive evaluation services that are customized to meet your needs. Our clients gain from our innovative evaluation techniques and tools and they greatly benefit from the personal attention we offer each valued client.


Qualitative Research Services

Let us host your next online focus group

Have you ever wanted a research partner who can expertly guide you in the design and implementation of focus groups? Find out how Limetree Research can partner with you to create focus groups that give you meaningful data. We offer a menu of options that we will customize to your project. Only need an online hosting platform? We've got you covered. Need help with protocol design? We can help with that, too! We are highly skilled focus group moderators who frequently conduct our own focus groups and would be honored to moderate for you. Our cutting-edge qualitative methods, tools, and expertise are sought after by university faculty, local and state government programs, marketing firms, schools, private industry, healthcare, and nonprofit organizations.



We offer courses for physicians, healthcare providers, researchers, and dietetic interns, and general audiences

Limetree Research offers training both onsite and online. Please contact us to schedule a customized training for your organization. 

Free consultation and quote for your next research, evaluation, or training project.

Sign up for a personal consultation for innovative research and evaluation strategies and a free quote for your next project!


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