Dr. David Marquis, DC DACBN

Dr. David Marquis, DC DACBN Dr. Marquis is a Functional Medicine doctor who goes beyond symptom management medicine.

How many people do you know that think they have some form of "ADD or Aspergers", or just get "Foggy in the Brain" and are forgetful of names and places or those who stumble or trip a lot. These are all subtle signs of a Brain Imbalance that affect health in ways that will totally surprise you. Patients who have unrecognized neurological symptoms due to an imbalance between their left and right br

ain hemispheres need help and medication isn't always the solution. Drugs treat the hemispheres equally, where as Brain Based Therapy can treat a specific area in the brain; effectively helping the patient recover from symptoms and conditions caused when the brain is imbalanced. These unique therapies when combined with proper fuel delivery (metabolism) allow patients to succeed in overcoming their blocks to optimal health. After a complete evaluation which often includes full labs and physical exam along with history to determine the actual cause of complaints Dr. Marquis will implement an equally comprehensive treatment plan. He will leave no stone unturned to assist his patients in their recovery.

09/09/2026

🦷 OraMax— support your oral health from the inside out.
A targeted supplement designed to support a healthy oral microbiome, gum health, and overall mouth wellness. Because a healthy mouth is an important part of whole-body health. ✨

09/02/2026

✨ Folate + B12 = a powerful pair ✨
Folate and B12 work together to support healthy red blood cell production, DNA synthesis, energy metabolism, and nervous system function.

They’re especially important during periods of growth and when the body’s nutritional demands increase. 💛

08/31/2026

✨ **Vital Age Defiance** may be a supportive addition to an anti-aging skincare routine, especially when the goal is to support skin resilience and overall vitality. For sensitive skin, think gentle support from the inside out—while protecting the skin barrier and supporting healthy collagen through nutrition, hydration, sleep, and sun protection. 🤍

08/26/2026

🧬 Urolithin A: Supporting Your Mitochondria

Healthy mitochondria are essential for energy, muscle function, recovery, and healthy aging. Urolithin A is a postbiotic compound being studied for its role in supporting mitophagy—the body’s natural process of clearing out older, damaged mitochondria so cells can maintain a healthier mitochondrial network.

✨ Supports mitochondrial health
✨ Promotes healthy mitophagy
✨ Supports muscle function & recovery
✨ Helps support cellular energy and healthy aging

Your mitochondria are the powerhouses of your cells—taking care of them is an important part of taking care of your whole body. ⚡️

Longevity MuscleHealth Wellness

08/26/2026

New supplement alert!! Part 1 for mitochondrial health and energy 🔋🪫⚡️⚡️ Support Your Cellular Energy with ATP 360

Feeling run down, low on energy, or like your body isn’t producing energy as efficiently as it should? ATP is the body’s primary energy currency, powering everything from muscle function to brain activity and cellular repair.
ATP 360 is designed to support healthy cellular energy production, mitochondrial function, and overall vitality—helping your cells make the energy they need to do their jobs.

✨ Support mitochondrial health
✨ Promote cellular energy production
✨ Support physical & mental energy
✨ Help optimize overall cellular function
Your energy starts at the cellular level. đź’«

Wellness FunctionalHealth HealthyAging

08/18/2026

đź”´ Why K-Laser + Red Light?

Healing happens at the cellular level. K-Laser and red/near-infrared light use photobiomodulation to stimulate cells and support the body’s natural repair processes.

✨ Supports mitochondrial function + ATP production
✨ Promotes circulation and oxygen delivery
✨ Helps regulate inflammation
✨ Supports collagen and tissue repair
✨ Can help reduce pain and promote recovery
✨ Supports cellular regeneration

Give your cells the energy they need to heal, repair, and recover. ❤️‍🩹

08/12/2026

Patient testimonial!

I have exciting news to share! ✨This August, I’m joining a panel of health and wellness specialists as a guest speaker f...
08/06/2026

I have exciting news to share! ✨
This August, I’m joining a panel of health and wellness specialists as a guest speaker for Signal Shift: Moving from Chronic Pain to Lasting Comfort.

If physical discomfort, joint stiffness, or chronic pain has been holding you back, this one’s for you. These conversations will explore how to find lasting relief, with ideas from people who live and breathe this work every day.

Here’s what you can expect: ✨ Practical daily movement resets ✨ Holistic & anti-inflammatory strategies ✨ Simple, home-friendly tools to reclaim your comfort
I’ll be sharing my best insights on why chronic pain is rarely one thing — it’s usually metabolic, neurological, and structural factors interacting — and why treating the whole person is the path to real healing. I’d love to see you there!
Reserve your seat here: signalshift2026.com/marquis or at the link in my bio! đź”—
SignalShift

08/06/2026

Watch here to learn about the IC valve release!

08/04/2026

Your ileocecal (IC) valve may be small, but it plays a big role in your digestive health.
Located between the small intestine and large intestine, the IC valve acts like a gatekeeper—allowing food to move forward while helping prevent bacteria and waste from flowing backward.

When the IC valve becomes restricted or isn’t functioning well, it may contribute to:

• Bloating and abdominal discomfort
• Constipation or diarrhea
• Gas after meals
• Poor nutrient absorption
• Bacterial overgrowth (such as SIBO)

At Pathways to Health, we evaluate the body as a whole. Gentle manual techniques to help restore normal mobility of the IC valve, along with addressing gut health, nutrition, nervous system function, and the microbiome, can be an important piece of improving digestion and overall wellness.

Your gut is connected to nearly every aspect of your health—from energy and immunity to mood and brain function. Sometimes, supporting better digestive function starts with restoring proper movement.

✨ Healthy digestion starts with healthy flow.

SIBO Microbiome PathwaysToHealth WellnessJourney

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2 James Way, Suite 101
Pismo Beach, CA
93449

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 2pm

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