Tahtiana Caldwell
RDN, LD
Senior Dietitian
Best for: Adults managing a chronic condition or rebuilding their relationship with food who want realistic changes that fit their lifestyle and cultural traditions.
Known for:
GLP-1 medication support
Women's health
Weight management
GI conditions
Patients with multiple medical conditions
Ages seen: 18+
Visits: In person (Mon, Thu, Fri) or telehealth (Tue, Wed)
Best for: People who want practical, non-diet support for complex medical conditions, diabetes, or digestive concerns, and anyone who wants help with weight or GLP-1 medications.
Known for:
Complex medical conditions
Diabetes
GI conditions
Tube feeding and enteral nutrition
Sports nutrition
Weight management and GLP-1 support
Men's health
Ages seen: 5+
Visits: In person (Tue, Thu, Fri) or telehealth (Mon, Wed)
Currently on a waiting list.
Best for: Kids (3+), teens, and adults, including active people and athletes, who want simple, sustainable nutrition guidance.
Known for:
Eating disorders (binge eating, anorexia, bulimia, emotional eating, OSFED)
Sports nutrition
Weight management
GI conditions
Pediatric nutrition
Ages seen: 3+
Visits: In person (Mon, Wed) or telehealth (Tue, Thu, Fri)
Jorja Washington
MS, RD, LD, NASM-CPT
Susan Ivester
RDN, LD
Virtual Sessions Only
Best for: Adults who want practical help with cancer nutrition, kidney disease, heart health, diabetes, or digestive concerns.
Known for:
Oncology nutrition
Kidney disease
Heart health
Diabetes and prediabetes
GI conditions
Ages seen: 18+
Visits: Telehealth only (Tue, Thu)
Lauren Brauer
MS, RDN, LD
Best for: Families dealing with picky eating and childhood feeding challenges, and adults who want a weight-neutral, intuitive eating approach.
Known for:
Picky eating and childhood feeding
Pediatric nutrition
Eating disorders (binge eating, anorexia, bulimia, emotional eating, OSFED)
IBS and GI conditions
Intuitive eating and eating competence
Weight-neutral counseling
Heart health and prediabetes
Ages seen: 2+
Visits: In person and telehealth (Tue, Fri)
Daniel Smith
MS, RDN, LD
Appointments within 48 hours
Caty Davis, Owner
Owner of Sparkman Nutrition, which she took over from founder Alexa Sparkman in 2024 after joining as Office Manager in 2022. She is passionate about connecting patients with the right dietitian and making nutrition counseling accessible across Texas.
Alexa Sparkman, Founder
Not Accepting Clients
Founder of Sparkman Nutrition and a nationally recognized dietitian with more than 45 years of experience. She started one of the first nutrition counseling practices in Central Texas and created the Overcoming Mind Hunger program for binge eating disorder.
Jorja Washington is a board-certified registered dietitian nutritionist and certified personal trainer who works with children (ages 3+), teens, and adults on eating disorders, sports nutrition, weight management, and GI concerns. She earned her bachelor's and master's degrees in Nutritional Sciences and Dietetics from Texas Tech University and completed her dietetic internship through Aramark.
Jorja's experience spans clinical, community, and pediatric nutrition. She has taught nutrition education, community gardening programs, and hands-on cooking classes for children in underserved communities. Her background in culinary arts, functional nutrition research, and personal training lets her pair nutrition science with practical, everyday strategies.
She believes healthy eating should not feel overwhelming or restrictive, and helps patients build lifelong habits that fit their lives, preferences, and goals. Outside of work, you will likely find Jorja hiking, gardening, cooking, or spending time with family and friends.
Tahtiana Caldwell is a board-certified registered dietitian nutritionist who helps adults with GLP-1 medication support, weight management, GI conditions, and women's health. She is especially skilled at looking at the whole picture for people living with several medical conditions at once, instead of treating one diagnosis at a time.
Tahtiana earned her Bachelor of Science in Nutrition and completed the Coordinated Program in Dietetics at The University of Texas at Austin. A passionate foodie, she builds plans that are enjoyable, realistic, and personalized to each patient's lifestyle, preferences, and cultural traditions. She believes lasting success comes from small, meaningful changes over time.
Outside of the office, Tahtiana serves in a leadership role at her church and enjoys exploring new restaurants and experiencing different cultures through food.
Daniel Smith is a registered dietitian nutritionist in Austin who helps people ages 5 and up manage complex medical conditions, diabetes, GI conditions, and weight, and who supports patients who rely on tube feeding or enteral nutrition. He also works with athletes and active people on sports nutrition, with men on men's health, and with adults taking GLP-1 medications.
Daniel holds a BS and MS in Human Nutrition and Dietetics from Texas State University and completed his dietetic internship at the Central Texas Veterans Healthcare System, gaining experience in both clinical nutrition and foodservice. That work taught him to help people with complex conditions make changes that are realistic, sustainable, and respectful of their background and goals.
His non-diet, mindful eating approach gives every patient a supportive, judgment-free space to be seen and heard. Daniel believes nutrition should add to quality of life, not add stress, and that lasting health is built on consistency, flexibility, and compassion. Outside of work, he enjoys working out, spending time with friends, and trying new food spots.
Susan Ivester is a registered dietitian nutritionist with decades of experience providing compassionate, evidence-based nutrition counseling. She has worked in private practice throughout her career, including with Sparkman Nutrition since 2014, and now sees adults by telehealth for oncology nutrition, kidney disease, heart health, diabetes, and digestive concerns. Oncology nutrition is a particular passion.
Susan believes nutrition should be individualized and practical. She partners with each patient to set achievable goals that last, rather than quick fixes, whether you are managing a chronic condition, recovering from illness, or looking to improve your overall health.
Outside of the office, Susan enjoys cycling, swimming, hiking, and walking her dog. She loves cooking and shares creative, nutritious recipes with her patients. Volunteering, in healthcare and the arts, has long been important to her.
Our founder, Alexa holds a bachelor's degree in nutrition from Texas Tech University and a master's degree in nutrition from the University of Texas at Austin. A nationally recognized specialist, Alexa worked more than 45 years as a Registered Dietitian Nutritionist. She formed one of the first nutrition counseling practices in Central Texas and developed the Overcoming Mind Hunger program which focused on treating Binge Eating Disorder.
Now retired, she no longer sees patients and enjoys her travels.
Lauren Brauer is a board-certified registered dietitian nutritionist with more than 15 years of experience helping children, teens, and adults build a healthy relationship with food. She specializes in picky eating, childhood feeding challenges, and pediatric nutrition for families, and in weight-neutral, non-diet counseling for adults, including IBS and other GI conditions, heart health, prediabetes, and eating disorders such as binge eating, anorexia, bulimia, emotional eating, and OSFED.
Lauren has advanced training in Ellyn Satter's Childhood Feeding Dynamics and Eating Competence models. She has co-authored a book chapter on pediatric nutrition and an expert consensus article on nutrition therapy for children, developed nutrition education curricula, spoken to professional medical and nutrition organizations in Massachusetts and Texas, and mentored dozens of future dietitians as a preceptor for students at The University of Texas and Texas State University.
Lauren believes nutrition should reduce stress around food, not add to it. She works with each patient on realistic, sustainable strategies that fit their needs. Outside of work, she enjoys walking, hiking, dancing, gardening, cooking, and sharing meals with family and friends.
Caty Davis is the Owner of Sparkman Nutrition, a leading outpatient nutrition practice serving Austin and Central Texas. She joined Sparkman Nutrition in 2022 as Office Manager and quickly developed a passion for expanding access to high-quality, evidence-based nutrition counseling. In June 2024, Caty acquired the practice from founder Alexa Sparkman and has since focused on growing a team of experienced Registered Dietitian Nutritionists dedicated to improving the health of children, adolescents, and adults.
Caty's passion for nutrition was inspired by caring for her father, who lived with diabetes and other chronic health conditions. Witnessing firsthand how nutrition education can transform both physical and mental health fueled her commitment to making nutrition counseling more accessible for individuals and families throughout Texas.
As practice owner, Caty is passionate about connecting patients with the right dietitian for their unique needs while building strong partnerships with physicians, healthcare systems, employers, and community organizations. Her goal is to ensure patients have access to compassionate, specialized nutrition care that helps them achieve lasting improvements in their health and quality of life.
Sparkman Nutrition proudly provides personalized nutrition counseling for a wide range of medical conditions, including diabetes, gastrointestinal disorders, heart disease, kidney disease, oncology, weight management, pediatric nutrition, eating disorders, women's health, and sports nutrition. The practice offers both in-person appointments in the Austin area and telehealth services throughout Texas.
Healthcare providers and medical practices interested in learning more about Sparkman Nutrition's services are encouraged to contact the office. Caty enjoys meeting with physicians and healthcare teams to discuss referral partnerships, answer questions about nutrition counseling, and schedule complimentary lunch-and-learn presentations tailored to your practice and patients.
Outside of the office, Caty enjoys spending time with her husband, Jeremy, and their daughters, Lennon and Fianna, exploring Central Texas and supporting the local community.
follow us on instagram! @sparkmannutrition
512-257-0898
info@SparkmanNutrition.com
Main Office: 7701 N Lamar Blvd
Suite 402
Austin, Texas 78752
Nutrition
Registered Dietitian Nutritionists in Austin, TX
Sparkman Nutrition provides in-person nutrition counseling in Austin, Texas, helping individuals and families work with licensed registered dietitians. We offer evidence-based care for diabetes management, cancer nutrition, digestive health, and family nutrition.