Isaac Diaz, RD

4.5
(36)
Video calls
In-person
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Background

Are you struggling to lose weight and maintain your progress? Have you been putting in the effort with physical activity but aren’t seeing the results you want? Look no further—I'm here to help! Hi, I'm Isaac, a Licensed Dietitian Nutritionist and Certified Personal Trainer. With many years of experience, I specialize in guiding clients to achieve their desired health and fitness goals.

Personally, I understand the frustration of struggling with weight loss and muscle gain. I’ve faced these challenges myself and, while it was tough, those experiences have shaped my approach and deepened my commitment to helping others succeed. My mission is to end your health and fitness struggles once and for all.

With my expertise, you’ll receive a personalized nutrition assessment focused on your overall health and fitness, evidence-based recommendations, and ongoing support delivered with confidentiality and professionalism. Let’s work together to unlock your potential and achieve the remarkable results you’ve been striving for!

Availability

Approach

"Are you struggling to lose weight and maintain your progress? Have you been putting in the effort with physical activity but aren’t seeing the results you want? Look no further—I'm here to help! Hi, I'm Isaac, a Licensed Dietitian Nutritionist and Certified Personal Trainer. With many years of experience, I specialize in guiding clients to achieve their desired health and fitness goals. Let’s work together to unlock your potential and see the remarkable results you’ve been seeking!"

Specialties

Weight Loss
Diabetes
High Cholesterol
High Blood Pressure
Food Allergies & Sensitivities
Vegan & Vegetarian
Pregnancy & Postpartum
PCOS
Autoimmune
IBS
Kidney Disease
Pediatrics
Colitis
Celiac
IBD
GERD
Sports Nutrition
Bariatric
Cancer / Oncology
Thyroid Health
Gut Health
SIBO
Perimenopause & Menopause
General Nutrition

Modalities

🍴
Intuitive Eating
🥦
Meal Planning
📊
Accountability
💬
Motivational Interviewing
🔎
FODMAP
🚫
Elimination Diet
💞
Relationship With Food
🧘
Mind-Body Connection
💤
Sleep
🏃
Exercise
🌿
Holistic
❤️
Health At Every Size (HAES)
🧠
Cognitive Behavioral Therapy (CBT)
🔗
Integrative
⚙️
Functional
🥗
Plant-Based

Insurance accepted

Aetna, Anthem, Blue Cross Blue Shield, Blue Care Network, Blue Cross, Blue Shield, Carefirst, Cigna, Empire, Golden Rule, Highmark, Horizon, Independence Blue Cross, Optum, Kaiser, Oxford, Regence Blue Cross Blue Shield, Select Health, United Healthcare, United Medical Resources (UMR)

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

6929 Valatta Pl, Rancho Cucamonga, CA 91701
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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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