Isaac Diaz, RD
Available to meet now

Isaac Diaz, RD

4.5
(36)
5
(100+)
1+ years of experience
Video calls
In-person
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Background

Tired of starting over with your weight and fitness goals and ready to improve your nutrition, fitness, and habits in a sustainable way?

I help clients with their weight goals, improve body composition, build healthier habits, and create realistic routines they can maintain long term — without restrictive dieting.

My approach combines evidence-based nutrition, behavior change coaching, accountability, and practical strategies tailored to real life.

I focus on helping clients stay consistent through busy schedules, stress, cravings, emotional eating, and loss of motivation.

Together, we work on:

  • Weight and sustainable habit change
  • Fitness and body composition goals
  • Emotional eating and cravings
  • Meal planning and high-protein nutrition
  • Building consistency and motivation
  • Nutrition to support exercise performance and recovery

I provide supportive, direct, and non-judgmental coaching focused on long-term progress, not perfection. 

My goal is to help you build habits that feel realistic, flexible, and sustainable so you can feel more confident in your health long term.

If you're looking for a realistic approach to nutrition, weight, and fitness, I’d love to work with you.

Availability

Approach

Tired of starting over with your weight and fitness goals? I help clients with weight, improve body composition, and build sustainable habits without restrictive dieting. My approach combines evidence-based nutrition, accountability, and practical strategies that fit real life—addressing emotional eating, cravings, meal planning, motivation, and fitness nutrition. Together, we focus on consistency and real results. If you’re ready for a realistic, sustainable path, I’d love to work with you.

Specialties

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

Diets

Diabetes

Cuisines

Diabetes

I identify as

Diabetes

Languages

Diabetes

Modalities

❤️
Health At Every Size (HAES)
📏
Personalized Macros
🏃
Exercise
📊
Accountability
💬
Motivational Interviewing
🔬
Lab Testing
💊
Supplement Management
🍴
Intuitive Eating
🧘
Mind-Body Connection
💤
Sleep
💞
Relationship With Food
Weight Loss Medication
🥗
Plant-Based

Insurance accepted

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

Seeing clients in

AL, AK, AZ, AR, CA, CO, CT, DE, DC, FL, GA, HI, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY

Location

6929 Valatta Pl, Rancho Cucamonga, CA 91701
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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