Registered Dietitian Nutritionist & Fitness Coach Services—
Covered by Insurance

Zero out of pocket cost for 95% of our patients!
Start with a Registered Dietitian Nutritionist & Certified Personal Trainer via video call.
FSA/HSA/HRA and self-pay options available.
A Few Of Our Nationwide In-Network Partners:





Real Reviews, Real Results:
Google Business Page
Posted on Google Tamara MackTrustindex verifies that the original source of the review is Google. Great energy and incredibly knowledgeable!
Owner's reply
Thank you! We’re thrilled to hear you had a great experience. At Fit4Life Nutrition, we strive to bring positive energy and evidence-based guidance to every session while providing personalized, practical support to help our clients reach their health goals.Posted on Google Mia CiuffetelliTrustindex verifies that the original source of the review is Google. SEE ISAAC STAT!!!!!! He has made me truly love myself! It’s okay to love food and be fit!!!!!! He also has the best quotes ask him about them😁😁😁
Owner's reply
Thank you so much for this incredible review! We’re honored to hear that your experience has helped you build confidence, enjoy food without guilt, and embrace a healthy, balanced lifestyle. At Fit4Life Nutrition, we believe it’s absolutely possible to love food and be fit while creating sustainable habits that support long-term wellness. We appreciate your recommendation and look forward to continuing to support your nutrition and fitness journey!Posted on Google Gianna CiuffetelliTrustindex verifies that the original source of the review is Google. Isaac is the absolute best. He has boosted my confidence immensely and it was only a consultation. Looking forward to continuing my relationship with him, food, and fitness.
Owner's reply
Thank you so much for your thoughtful review! We’re honored to hear that your nutrition consultation helped boost your confidence and provided a positive start to your health journey. Our goal is to help clients build a healthy relationship with food, fitness, and sustainable habits that last. We’re excited to continue working together and support you every step of the way.Posted on Google Bunny AddamsTrustindex verifies that the original source of the review is Google. A very good first appointment. Gave me a lot to think about. Looking forward to working together more in the future.
Owner's reply
Thank you so much for your kind words! We're glad our first nutrition appointment gave you valuable insights and practical strategies to think about. We look forward to continuing to work together and supporting you on your journey toward your health and wellness goals. Thank you for trusting Fit4Life Nutrition with your care!Posted on Google Esperanzita CastilloTrustindex verifies that the original source of the review is Google. Awesome experience
Owner's reply
Thank you! It was a pleasure to get to know you and your health goals. We look forward to working together.Posted on Google KAREN GUTHERLESSTrustindex verifies that the original source of the review is Google. Hands down Isaac is amazing with his knowledge about nutrition and wellness! He has what I have been looking for in a dietician who also helps with your emotional wellness.
Owner's reply
Thank you! We appreciate you taking the time to share your experience. Our goal is to provide personalized nutrition guidance while also supporting the emotional and mindset side of wellness, because lasting health changes involve both body and mind. We're grateful to be part of your journey and look forward to continuing to support your health and wellness goals through nutrition, lifestyle coaching, and sustainable habits.Posted on Google Melissa MooreTrustindex verifies that the original source of the review is Google. Very direct, professional, supportive, caring person. He’s speaks directly into what you need to hear
Owner's reply
Thank you so much for your thoughtful review! We take pride in providing direct, professional, and supportive nutrition coaching tailored to each client’s needs. Creating a caring environment while offering honest guidance is an important part of helping clients build sustainable health and wellness habits. We truly appreciate you trusting Fit for Life Nutrition with your journey and are grateful for your recommendation!Posted on Google Miami Beach LiraTrustindex verifies that the original source of the review is Google. The nicest experience yet! The type of tailored experience I would imagine A listers like Tom Cruise or Barbara Streisand would receive if I was at that level. Mr Diaz has excellent bedside manner like any good doctor would which include listening, reassuring, connecting and most importantly showing genuine empathy towards his patients. What I like about his approach is that you can get really nerdy with him about macros, metrics, science backed results all while debunking myths and dropping knowledge simultaneously. That’s rare in my book. My goal was to hit ideal weight for my height while proposing an ambitious goal of 9 percent body fat …. Isaac locked-in and understood the assignment. Highly recommend the Diaz method. Thank you Isaac!
Owner's reply
Wow—this might be one of our favorite reviews yet 😄 Thank you so much for your kind words and for trusting our dietitian telehealth services! We love bringing that “A-list experience” to everyday nutrition and fitness coaching, and it’s awesome to hear that the personalized approach, empathy, and connection stood out to you. That balance of real support and getting into the details—macros, metrics, and science-backed nutrition—is exactly what we aim for. Your goal of reaching an ideal weight is no small task, and you showed up ready to do the work. That’s what makes the difference. We’re glad our virtual dietitian services and coaching style helped break down myths and keep things clear, realistic, and effective. “The Diaz Method” only works because of clients like you who stay committed and curious—so credit goes both ways. Appreciate the recommendation and excited to keep supporting your progress! 💪Posted on Google María G HernándezTrustindex verifies that the original source of the review is Google. I liked the guidance on Nutrition. It was very detailed and with specific examples on what food I could consume.
Owner's reply
Thank you for the 5-star review! We’re glad our dietitian telehealth services helped you stay consistent with your meal planning and nutrition goals. Looking forward to continuing your progress.Posted on Google Orlando CastilloTrustindex verifies that the original source of the review is Google. Great communication he’s so helpful and patient explains everything very good and answers every question you have highly recommend him for a great session on nutrition
Owner's reply
We truly appreciate your feedback! Helping clients through telehealth services reach their nutrition goals is what drives us. Keep up the strong work!Load moreVerified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Small Steps, Big Changes—Starting Now

Nutrition For Lasting Change
Learn how to maintain healthy eating-for the long term.

Behavioral Fitness Coaching
Develop fitness strategies that foster lasting habits and long-term success.

Increase Your Energy Levels
Maximize your energy and potential to fuel your day every day.
Nutrition Results
- Personalized Nutrition & Fitness Guidance
- Manage Health Conditions
- Weight Management
- Better Relationship With Food Support
- Built Sustainable Long Term Eating Habits
Wellness Impact
- Increased Quality of Life
- Reduced Stress and Improve Mood
- Increased Motivation To Achieve Goals
- Boosted Confidence and Self Esteem
- Transformed Health Journey
Why Choose Us?
#1: Go beyond nutrition guidance and get exercise support from a Certified Personal Trainer and Certified Health Education Specialist at no additional cost.
#2: We extend our reach past sessions with an evidence-based motivation and goal toolkit—all included at no extra cost to support you between visits.
#3: Get support when you need it most. We offer afternoon, evening and weekend appointments to fit your real-life schedule.

How It Works
Step 1) Start by filling out our clinic form by clicking book appointment.
Step 2) Verify you email address.
Step 3) Once everything looks good, you’ll receive an invitation to schedule your appointment.
Insurance, HSA/FSA/HRA & Self Pay
Insurance: We are in-network nationwide with Anthem, Aetna, United Healthcare, and Blue Shield of California. We are also in-network with the following Blue Cross Blue Shield products nationwide: Premera, Highmark, CareFirst, Regence, Wellmark, Horizon, Excellus, Capital, and Independence. For additional questions, please view our FAQ page.
FSA/HSA/HRA Debit Cards: These can be used to cover the full consultation fee of $150.00 for 55 minutes, co-pays, or co-insurance amounts, as determined by your insurance plan. You may also use this option if your plan is considered out-of-network.
Self Pay: Long-Term Health and Fitness Investment of $150.00 per 55 minute consultation. This is a great option if you do not have insurance, are considered out-of-network, your plan does not include telehealth benefits, your HMO plan is not covered, or if you simply prefer not to use your health insurance plan.
Inside The Expertise

Isaac Diaz, MPH, RDN, LDN, NASM-CPT, CHES
Hi, I'm Isaac, a Licensed Registered Dietitian Nutritionist, Certified Personal Trainer, and Certified Health Education Specialist. With many years of experience, I specialize in guiding clients to achieve their desired health and fitness goals.With my expertise, you’ll receive nutrition support, evidence-based recommendations, and ongoing support delivered with confidentiality and professionalism.Let’s work together to unlock your potential and achieve the results you’ve been striving for!
