About Andrea
Army-trained. Board-certified. Functionally minded. And deeply committed to your health.
Book With Andrea
Army-trained. Mother.
Now back — and better than ever.
Most dietitians have 2–3 areas of specialty. I bring clinical, military, and life experience across a rare combination of disciplines — and I bring all of it to every patient I see.
"Patients today are tired of being told their labs show nothing wrong, maybe it's in their heads, and they should consider eating less and exercising more. I believe your health deserves more!"
— Andrea Zajac, RDNI earned a scholarship to Walter Reed Army Medical Center's Medical Specialty Corps Dietetic Internship — one of the most rigorous clinical training programs in the country. I commissioned as a U.S. Army Officer, completed over 1,200 clinical hours across ICU, cardiac, renal, oncology, and bariatric care, and served as Chief of Clinical Nutrition at Womack Army Medical Center.
Then I stepped away — intentionally — to raise my children. It's one of the best decisions I ever made. When I returned to practice, I dove deep into functional medicine and built a specialty that goes far beyond what most RDNs offer.
My journey with food is also personal. I grew up in a culture of thinness that led to my own experience with disordered eating. Healing that relationship is what led me to nutrition — and it drives my compassionate, non-judgmental approach with every patient.
Book With AndreaA rare combination of expertise
Most dietitians have 2–3 specialties. Here's what I bring to your care.
Built on a foundation of real clinical experience
B.S. Human Nutrition & Foods
Earned my degree from Virginia Polytechnic Institute & State University, building a rigorous foundation in nutrition science, biochemistry, and clinical dietetics.
Dietetic Internship — Scholarship Recipient
Completed one of the most elite clinical nutrition internships in the country — 1,200+ hours across ICU, cardiac, renal, oncology, bariatric, and pediatric care. Commissioned as a U.S. Army Officer upon completion.
Chief of Clinical Nutrition
Led the clinical nutrition department, overseeing patient care across medical and surgical units. Also served as the official dietitian for the U.S. Army Golden Knights elite parachute demonstration team.
Raising My Family
I stepped away from clinical practice to raise my children — one of the best decisions I've ever made. This season gave me deep personal insight into the real-life challenges my patients face: time constraints, family nutrition, stress, and sustainable health habits.
SD Medical Nutrition Therapy, PC
Returned to practice with expanded functional medicine training — GI-MAP, DUTCH, CGM, NutrEval, nutritional psychiatry, and nutrigenomics. Built a private practice designed around what patients actually need: real answers, personalized plans, and a practitioner who listens.
What I believe about your health
Root causes, not symptoms
Your symptoms are signals. I'm trained to read them — and to find what's actually driving them, not just manage them.
Real food, not restriction
I'll likely tell you to eat more. Nourishment — not deprivation — is how bodies heal and thrive.
Partnership, not prescription
Your goals drive the plan. I bring the clinical expertise; you bring the knowledge of your own life. Together we build something that actually works.
Compassion without judgment
I've lived the struggle with food and body image. There is no judgment in this practice — only support, science, and a genuine desire to see you thrive.
Let's find your root cause — together.
Book directly online. No referral needed. Virtual and in-person appointments available in San Diego.
United Healthcare & Aetna accepted · 619-736-9020