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"Nutrition is the Cornerstone to good health."

"Responsive, quality Patient care is our priority"

"Professional, evidence based, dietary training"


(405) 701-9909 Phone

Meet Sarah Barnes: MS, RD/LD


Sarah graduated from the University of Central Oklahoma with her Bachelors and Masters of Science in Dietetics and Food Management.  She has been working as a licensed dietitian for more than 10 years.  Sarah also holds certification in Adult Weight Management.  Since getting diagnosed with celiac disease in her internship, she has a passion for helping people with GI nutrition.  Sarah is also a Lifestyle Coach for the National Diabetes Prevention Program.  Wanting to "give back" to the college, Sarah also serves as an adjunct professor for the University of Central Oklahoma.  In her down time, Sarah enjoys spending time with her family, cooking, traveling to the beach, and spending time outdoors.

Meet Christie Bruehl: RD/LD, CDCES
Christie Bruehl is a State of Oklahoma Licensed Dietitian, Certified Diabetes Educator, and founding partner of Cornerstone Nutrition & Diabetes. Christie is an honors graduate with a Bachelors degree from The University of Oklahoma's School of Nutritional Sciences in Dietetics.  Christie has been a licensed dietitian for more than 22 years with a focus on diabetes for the last 12 years working as a Certified Diabetes Care and Education Specialist.  Christie is also a Lifestyle Coach Master Trainer Select for the National Diabetes Prevention Program.  She is also a member of the Association of Diabetes Care & Education Specialists ADCES. Christie enjoys spending time with family, travel, fitness training, kayaking, and cheese cake!
Meet Kate Hayes: MS, RD/LD

Kate is a Licensed Dietitian and Registered Dietitian Nutritionist. She graduated from the University of Central Oklahoma with a Bachelors and Masters of Science in Nutrition and Food Science. Her passion for Nutrition began at a young age as a competitive athlete that set the foundation for her understanding on how to properly fuel the body. Her career thus far has allowed her the opportunity to expand her nutritional knowledge. She has spent the last several years working with patients with a variety of disease states in outpatient, acute, critical and long-term care settings. Through her experiences Kate understands the need to provide individualized nutrition care. Her biggest fulfillment comes from helping her clients achieve long-term health through nutrition education, guidance and empowerment. Outside of the office, when she isn’t enjoying a workout out or experimenting in the kitchen with a new recipe, Kate can be found spending time with her baby boy, two dogs and loving husband.

Meet Susan Pacific: RD/LD, CDCES

Susan Pacific graduated from the University of Oklahoma with a degree in nutritional sciences. She is a registered dietitian and certified diabetes educator.  She is a certified pump trainer for Insulet Corporation, Medtronic, and Tandem and trains individuals on Continuous Glucose Monitors for Dexcom and Abbott. Susan facilitates Diabetes Nutrition education classes, individual consults, and classes for the National Diabetes Prevention Program. She also organizes and facilitates a pump support group.

Meet Lexi Wilkerson: RD/LD

My name is Lexi Wilkerson and I am a Registered Dietitian. I am originally from Texas and I graduated from Louisiana Tech University with a Bachelor’s of Science in Nutrition and Dietetics.  My passion for nutrition started at a young age as I participated in various sports and it grew even deeper as I became a competitive athlete in high school.  My mother is also a dietitian and I found myself asking her more and more about nutrition.  My goal is to be able to help others fulfill their nutrition goals so they can have the knowledge and support that my mom provided for me.  In my free time, I enjoy working out, spending time with friends, and being out at the lake.

Need Cornerstone to help you with any of the following?
  • Weight Management
  • Diabetes, pre-diabetes
  • GI Nutrition: IBS, low FODMAP diets, hypoglycemia, and celiac disease etc.
  • ​Autoimmune conditions
  • High cholesterol, high blood pressure
  • Vegetarian and plant-based nutrition
  • Pediatric nutrition 
  • Nutrition and Education Counseling
  • And more...
Recipes & Tips 


Cornerstone Nutrition & Diabetes tries lots of different recipes and tips to make meals healthier.  We are excited to share these with you.  See our Blog Page!

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