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David Kellenberger, RD

4.5
(36)
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Background

My Approach to Nutrition and Health

The word diet comes from Latin and Greek origins meaning a way of living. I believe this definition matters, because health is about much more than food alone—it’s about the daily choices we make and how they shape our lives over time.

In nutrition counseling, meaningful change doesn’t happen overnight. It happens through small, realistic steps that add up. While change can feel challenging, even modest adjustments can improve how you feel, support your overall well-being, and, in many cases, help prevent or slow chronic disease.

I enjoy working with individuals who are open to making gradual, sustainable changes and who understand that long-term health is worth the effort. My focus includes general nutrition for healthy aging and longevity, as well as medical nutrition therapy for conditions such as diabetes, high blood pressure, and other chronic illnesses. I also specialize in bariatric surgery nutrition and currently practice in internal medicine, where I use nutrition as a powerful tool alongside medical care.

I bring more than 24 years of experience as a Registered Dietitian (RD), Physician Associate (PA), and Doctor of Medical Science (DMS). This allows me to understand your full health picture and tailor nutrition recommendations to your unique medical history, lifestyle, and goals.

Outside of my professional role, I am a husband of 21 years and a father of three—roles I value deeply. My interest in nutrition began early, growing up in a family that owned natural foods markets, where I was exposed to whole-food nutrition and complementary approaches to health. From a young age, I saw how nutrition could make a meaningful difference, one person at a time.

I look forward to partnering with you and supporting you on your journey toward better health, balance, and long-term well-being.

Availability

Approach

I practice person-centered nutrition counseling that is compassionate, comprehensive, and competent. I listen to people's nutrition concerns in the context of their lifestyle and medical diagnoses. To find the best nutrition interventions that will significantly impact health and well-being. I enjoy motivating people through solid relationships. While short-term goals are important, I maintain a long-term perspective on making changes that will impact you now and in the coming decade.

Specialties

Diabetes
Thyroid Health
Cancer / Oncology
IBS
Gut Health
Bariatric
GERD
High Cholesterol
Pediatrics
Kidney Disease
High Blood Pressure
Weight Loss
Diabetes
PCOS

Modalities

🥦
Meal Planning
🍴
Intuitive Eating
📊
Accountability
💬
Motivational Interviewing
💞
Relationship With Food
🧘
Mind-Body Connection
💤
Sleep
🏃
Exercise
🔬
Lab Testing
⚙️
Functional
🔗
Integrative
🌿
Holistic
💊
Supplement Management
📏
Personalized Macros
Weight Loss Medication

Insurance accepted

Aetna, Anthem, Blue Care Network, Blue Cross, Blue Cross Blue Shield, Blue Shield, Carefirst, Empire, Highmark, Horizon, Independence Blue Cross, Regence Blue Cross Blue Shield, Select Health

Seeing clients in

AK, AZ, CA, CO, CT, HI, ID, IL, IN, MA, MI, NH, NJ, NY, OK, OR, PA, TX, UT, VT, VA, WA, WV, WI, WY

Location

401 Hospital Dr Ste 140, CORSICANA, TX 75110
Reviews
4.5
36 Reviews
(36)
5
(273)
4
(27)
3
(27)
2
(27)
1
(4)
AI summary of written reviews

Clients consistently describe Jane as warm, knowledgeable, and easy to talk to. Many highlight noticeable improvements in their eating habits, energy, and confidence after just a few weeks of working with her.

While a handful of clients hoped for more structured follow‑up, the vast majority praise her for setting realistic goals and explaining nutrition in a way that finally “clicks.”

Overall, Jane is highly recommended for anyone looking for thoughtful, supportive guidance.

6 clients left publicly written reviews
2 days ago

Jane completely changed how I think about food. She’s patient, knowledgeable, and explains things in a way that actually makes sense.

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