Dietitian Sandy Cortez

InVita Wellness

 Your GPS to Better Health

                               If YOU:


  • Are you tired of following all the Diets out there and working out like a mad men/women and still not getting the results you want?


  • Are you exhausted, bloated and feeling sick all the time and tired of hearing that “nothing is wrong with you”?


  • Do you feel lost with all the nutrition info out there?


  • Are scared with the results from your last physical or laboratory text?
  •  Are tired of wearing bigger clothes to hide the bulge.
  • The thought of meal planning make you cringe because you are so busy!!?

                               I CAN:


  • Let’s find what is holding you back from getting to your happy weight. Diet alone do not work; deprivation and denial are both unnecessary and counterproductive. 


  • I’ll help you determine the underlying causes of your health conditions, rather than simply addressing the symptoms. I’ll guide you to use food as medicine.
  • Let’s break complex information into bite-size pieces you can understand and implement, I’m here to give you direction, support & accountability.
  • Let’s get to the root of the problem and improve your health.
  • Lose the inches and fit into your sexy clothes.


  • Lets simplify your eating and fitness life to integrate into your busy schedule.

Hi there!

I’m Sandy, a Registered Dietitian-Nutrition Therapist & Certified Personal Trainer. I’m also a lover of life and anything health, nutrition and fitness-related.

The Road to a Better YOU requires direction I am here to be your guide, your support, your cheerleader, your mentor – basically your GPS to Better health because Guess what?! Being healthy is Not JUST about FOOD or “Diets”!

The Process

I can help you become aware of the stumbling blocks and equip you with the tools you need to live your life in a new and exciting way. The result is a fresher, bolder and more dynamic experience of who you truly are.

My Passion

To share simple, realistic and doable nutrition and lifestyle practices you can implement right away to get results as well as inspire you to TAKE ACTION and make choices that truly NOURISH you.

My Approach

I approach every client from the bird’s eye view of their overall life, mindset, habits and lifestyle – rather than just giving you a “one size fits all” handout. I give you individualized recommendations based on YOU. 


Nutrition Therapy & Nutrition Coaching

I offer personalized nutrition coaching and nutrition therapy to help you find your path  to a well nourished life.

28-Day Detox & Cleanse program

This Detox and Cleanse program will help you push the reset button to start with a clean slate.

Laboratory Testing

Gaining access to actionable insights about your health has never been easier with SpectraCell testing.


Patient Testimonials

I would HIGHLY recommend Sandy for anyone dealing with nutritional issues.  She is extremely knowledgeable and a tremendous help to my teenage daughter who was diagnosed with an intolerance to Gluten, Lactose and- Fructose.  Sandy helped her get on track with her foods and habits – just in time to go away to college.  Thank YOU Thank YOU!!!
-Gayle H. Martinez

Sandy is very friendly, and she knows her stuff. I’m so happy I found her, and strongly recommend her to anyone who also suffers from IBS!

-Tara R, Walnut Creek

Sandy is extremely helpful! truly knowledgable and a pleasure to work with.
I have tried so many diets and nothing really worked for me, but after working with Sandy just over 2 months I have lost almost 10 lbs. She is guiding me on the right direction, in health and life!
— Julia, Cambridge MA
If i could give Sandy more than 5 STARS I would!
She has transformed my health and life, my attitude, my physical appearance …. wow everything! Thank you Sandy
— Mike C, El Cerrito

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Frequently Asked Questions

If you do not see your question, let us know. 

Are you accepting new clients?

YES, I am! Please note that the first available appointment is usually within 2 weeks.

How can I work with you or schedule an appointment?

- You may schedule a Strategy Session.
- If you were referred by a Doctor, a member of our team will reach out to schedule your appointment.

What conditions/diseases can you help with?

Both me and the Dietitians on my team are delighted to be able to provide a variety of health and nutrition education/coaching services to different clients due to our expertise in various clinical, functional nutrition modalities. However, due to demand, I select clients after a strategy conversation has taken place and I’ve officially invited you to join one of my programs. If I believe I cannot meet your needs or that you would benefit from another provider, I will connect you with another RD or Nutrition Coach in the area. I take pride to be of service and to be the best “match” for both you and for me.

Do you accept Insurance?

I am currently a network provider for:

​ ​ -Aetna

​ ​ -Hill Physicians Medical Group

​ ​ -Sutter East Bay

​ ​ -United Healthcare

 However, I ask that YOU call and confirm insurance coverage for nutrition counseling.


Disclosure: “Verification of benefits is not a guarantee of eligibility or payment; actual payment is based on terms and conditions of your plan. All claims are subject to review as insurance may only cover dietary services that are reasonable or necessary."

Please understand that each insurance plan may differ in their definition of medical necessity for certain services.”

Are you available for online / virtual visits?

YES! I have moved into the virtual world and I am using an online portal called Healthie - its pretty awesome 🙂 

What are your rates?

Coming soon under offerings

Are you available for Consulting Services?

For facilities/menu review & development, corporate wellness presentations, speaking engagements, TV / radio appearances, interviews/podcasts, please contact my office directly at (925) 289-8785.

I am a student, can I pick your brain?

I love to help! Please schedule a Strategy Session.

Do you check insurance eligibility?

We are sorry for the inconvenience, but it is the patient's responsibility to check for insurance eligibility and coverage, if you call please inquire about visits allowed and deductibles. If insurance denies any service- it becomes patient responsibility.

Get in Touch!


(925) 289-8785

Main office

1776 Ygnacio Valley Rd,
Suite 201
Walnut Creek CA 94598