Healing from the root up.

A holistic, personalized approach to nutrition.

If you’re feeling stuck, dismissed, or just want a deeper understanding of your body and health, you've come to the right place. My approach is rooted in treating the underlying causes—not just the symptoms—so you can live a more vibrant and fulfilling life.

A bit about me…

Claire Mogelvang, RD, IFNCP

Hi, I’m Claire, a Registered Dietitian and Certified Integrative and Functional Nutrition Care Practitioner. I take a holistic, personalized approach to nutrition—looking at the whole person to uncover root causes and create lasting change.

I started my private practice after seeing a real gap in the healthcare system: people who want to feel better, who sense something is off, but don’t get the answers or support they need from traditional care. That’s where functional nutrition comes in. I work with clients looking to take a deeper, more preventative approach to their health—whether that’s improving gut function, managing weight, balancing hormones, supporting metabolism, or simply feeling more energized and in tune with their bodies.

I often use advanced functional lab testing to help guide our work—tests like comprehensive stool analysis, micronutrient panels, food sensitivity testing, SIBO breath tests, and organic acids testing. These tools help us uncover hidden imbalances and get to the root of symptoms so we can create a truly personalized and effective plan.

My background is grounded in five years of clinical experience at UCSF, where I currently specialize in oncology nutrition. I’ve worked with individuals at every stage of cancer care—before treatment, during chemotherapy or radiation, and into survivorship. Much of my work has involved helping patients manage intense side effects like digestive inflammation, nutrient malabsorption, and appetite loss—especially after complex surgeries. Using nutrition as a tool, I’ve helped people rebuild strength, reduce symptoms, and support their bodies in recovery.

If you’re feeling stuck, dismissed, or just want a deeper understanding of your body and health, I’m here to help you reconnect with your wellness—on your terms.

Let's Work Together

Services

Free Introductory Phone Call

Curious about working together? Schedule a free 20-minute introductory call to learn more about my approach and ask any questions you might have. This is a no-pressure opportunity to see if we're a good fit and how I can support your nutrition and wellness goals.

Nutrition Counseling: Initial Visit

We’ll begin with a 60-minute video or phone session to review your health history, eating habits, and any symptoms or concerns you’re experiencing. From there, I’ll provide personalized nutrition recommendations, practical lifestyle suggestions, and clear next steps to support your health and healing.

Nutrition Counseling: Follow Up

Follow-up sessions are 45 minutes and designed to support your progress and fine-tune your plan. We’ll review what’s working, navigate any new challenges, and adjust your plan as needed. Together, we’ll keep building sustainable habits that align with your goals. If desired, we can also follow up on functional lab testing.

Functional Lab Testing

I offer high-quality, non-invasive functional lab testing that can be done from the comfort of your home. These tests provide insights that help personalize your care and guide more targeted strategies. Together, we’ll break down the results in a clear language, then use them to inform nutrition & lifestyle recommendations just for you.

Contact Me

  • “After my cancer diagnosis and radiation treatment, I was unsure how to best support my recovery. Working with Claire has been a true gift, she is not only incredibly knowledgeable and professional, but she also takes the time to really listen and understand my needs. Her thoughtful guidance, clear explanations, and unwavering support have made a tremendous difference in my health. I always leave our sessions feeling informed and knowing I am in good hands.”

    Jane M

  • “I worked with Claire a time when my medical condition required fundamental dietary changes, but I had no idea where to begin. I found her to be an exceptional resource — she is  a wealth of academic knowledge, and equally important to me, she helped me feel comfortable, supported, and she included my stated preferences in developing a dietary plan that was fundamental to my recovery. I especially appreciate her availability for consult calls once my health stabilized.”

    Candace A

  • “Claire helped me uncover what countless specialists had missed and guided me toward feeling my best again. I so appreciated that her recommendations were practical, supportive, and never overwhelming. She worked with my lifestyle to incorporate habits that actually worked!”

    Samantha D

Recipes, Facts & Realistic Health

@moregreenspleasee

Let’s talk about PHYTONUTRIENTS 🌈 💫 Phytonutrients are plant compounds that are beneficial for humans - think what gives a plant it’s particular color (I.e carotenoids including beta carotene in my butternut squash soup, or lycopene fo
👋 just a little reminder that eating plant based every now and then is not only delicious, but also INCREDIBLY easy to make, super healthy for your gut, and really cost effective! My guess this bowl is around ~$3.50?! I’ll take it. Deets: 1-
The simplicity of this breakfast - arugula, heirloom tomato, avocado, soft boiled egg, salt+pepper+olive oil 🤍 It’s amazing how if you choose local, high quality ingredients, you don’t really need much for it to be a flavor bomb. Someti
Frickin healthy cottage cheese banana PANCAKES!!!! 🍌 🥞 We are officially in the cottage cheese cult - and so happy about it. If you’re looking to satisfy your pancake craving but with a healthy, high protein twist, look no further: Mix tog
A favorite “One pot shop” brunch recipe from @natsnourishments 👏 One of her maaany bean recipes I love! High protein 💪 High fiber (your gut will thank you) Anti-inflammatory 🥑 🫑 AND incredibly quick and easy to make. Ingredients:
Played around with tempeh for the first time!! I found this at the Leucadia farmers market from @sandiegotempeh ☀️ made from organic black beans, mung beans, vinegar, culture, and rice flour 💥 Although I do love certain animal proteins, it is a gre
Reasons why chia pudding has been my favorite breakfast recently: 🌟 It is FULLL of omega-3 fatty acids, which I’ve found most people don’t usually eat enough of (think fish, walnuts, pumpkin seeds, flaxseeds) - which are incredibly anti-
Yummmmmyyyy Thai salad 😍😍 pairs perfectly as a side with chicken, fish, or tofu; or even on its own! Full of fiber and color and deliciousness, highly recommend. Got the recipe here: https://theviewfromgreatisland.com/thai-salad/
Some yummmmy treats as of recently! Healthy fats, fiber, phytonutrients babyyyy 🫐
Savory breakfasts >>> 🙌🤌 if you’re looking to better balance your blood sugars to sustain and stabilize energy levels in the day (ie avoid “crashes”), lower inflammation, improve mood, have fewer cravings, or all the abov