Feel your best, faster

Physician-formulated vitamin & iron IV drips and booster shots, starting at $90.

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Sustainable weight loss, medically guided

A doctor-supervised GLP-1 program with nutrition, labs, and coaching, built around you.

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Subtle, physician-led aesthetics

Physician-guided aesthetics that enhance what is already you, subtle and expertly placed.

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Every condition, one root-cause plan

We map the why behind your symptoms, then build one plan across medicine, hormones, and weight care.

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AboutReviews

Naturopathic Doctors in Gilbert, AZ

When your health feels off, we help you find out why.

Root-cause naturopathic medicine and physician-guided aesthetics, together under one roof in Gilbert. We take the time to understand what is really going on, then build a care plan around you and your goals.

5.0 · 207 reviews on Google

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WHY ONYX

Full-service integrative care, from doctors who look where others stop.

Naturopathic medicine, IV therapy, medical weight loss, and physician-led aesthetics, all from one team.

Our licensed naturopathic physicians start with the root cause and the kind of in-depth testing most visits never order. Naturopathic medicine gets to the source of hormone, thyroid, gut, and energy concerns. Medical weight loss and GLP-1 care are supervised by a doctor, not a program. IV therapy and injections help you recover and refuel. And our aesthetics are handled by a physician injector, not a technician, for a result that stays natural. It all comes together in one plan, with a level of attention most clinics simply do not offer.

Complete Care

Naturopathic Medicine, Aesthetics, Weight Loss & IV Therapy in Gilbert

Whether you are here to feel better, look refreshed, or reach a healthy weight, choose a focus below to see how we help.

How care works here

Our integrative process

Three steps to getting real answers. We listen closely, run the testing that actually explains your symptoms, and build a plan around you.

01

Consultation

A full 75-minute initial consultation, not a rushed 7-minute visit. We take the time to hear your whole story, your history, your symptoms, and your goals, before we talk about next steps.

02

Order or Review Labs

We order advanced functional testing that conventional panels skip, or review labs you already have, then a physician reads them for the root cause of your symptoms.

03

Your Treatment Plan

A personalized plan that evolves with you, across medicine and weight loss, with a team that stays with you for the long run.

Get Started

Meet your doctors

Dr. Stephanie Nichols, NMD

Onyx's founder and a naturopathic physician. She focuses on women's health and hormones, including thyroid, PCOS (PMOS), perimenopause, and menopause, and personally leads the aesthetics injector work with a light, natural touch.

Founder · Naturopathic Physician

Dr. Kasey Nichols, NMD

A naturopathic physician who connects the dots between hormones, digestion, and mindset. He treats low testosterone, thyroid, anxiety, gut and digestive issues, and chronic stress at the root with bioidentical hormones, acupuncture, and IV therapy.

Co-Founder · Naturopathic Physician

Dr. Chelsea Deveson, NMD

Focused on the root causes of chronic disease, Dr. Deveson treats thyroid conditions, autoimmunity, adrenal fatigue and burnout, PCOS (PMOS), perimenopause, and digestive issues, blending conventional and natural medicine into personalized plans that address the drivers behind your symptoms.

Naturopathic Physician · Root-Cause Care

Functional Medicine in Gilbert, AZ

The top-rated naturopathic doctors in Gilbert, AZ.

Three licensed naturopathic doctors (NMD), rated 5.0 across 207 reviews, treating the whole person by blending modern medicine with natural, holistic therapies.

Naturopathic care for

Hormones, thyroid, and PCOS (PMOS)

Digestion, gut health, and autoimmunity

Fatigue, stress, and sleep

Acupuncture and regenerative therapies

Meet our doctors

CONDITIONS WE TREAT

What is really going on?
Let's find the why

Told your labs are normal but you still feel off? These are the conditions we hear about most, and the ones we help you get to the bottom of, so we can treat the cause instead of just managing the symptoms.

Botox, Jeuveau & Dysport

Soften the lines, keep the expression.

Physician-placed wrinkle reducers that relax fine lines while keeping you looking like you, never frozen.

Dermal & Lip Filler

Restore volume, refine your features.

Hyaluronic acid fillers placed by a physician to smooth folds, lift cheeks, and define lips in balanced, natural proportion.

Sculptra & Collagen

Rebuild collagen, gradually.

A biostimulator that prompts your own collagen to restore firmness and volume over time, for a refreshed look that still reads as you.

Microneedling & PRP

Renew your skin from within.

Controlled micro-channels paired with platelet-rich plasma to improve texture, tone, and scarring using your body's own growth factors.

Skin & Facials

Medical-grade glow, personalized.

Custom facials and medical-grade skincare using Rhonda Allison, a nature-meets-science line of botanical formulas with peptides and growth factors, built around your skin.

Aesthetics, the Onyx way

Aesthetics in Gilbert, AZ

Physician-injector-led aesthetics, from a doctor who understands your whole health, not just your skin. Your treatment and your privacy always come first, and before-and-after photos are shared on request.

Our Approach

Natural. Never overdone.

We enhance what is already you, with subtle, physician-guided results that never look obvious.

Our patients say it best

What our Gilbert patients are saying

Hear from patients across Gilbert and the East Valley who trust Onyx for naturopathic medicine, aesthetics, and weight loss.
Read all reviews

FAQ

Frequently asked questions

Everything you need to know about naturopathic medicine, aesthetics, and getting started at Onyx in Gilbert, AZ.

Your first visit is a full 75-minute consultation. We review your full history, current symptoms, and goals, then map out the functional labs worth running so your plan is built on real data rather than guesswork.

Yes. Many patients work with us on an ongoing basis to manage chronic and complex conditions, with regular check-ins and lab reviews that keep your plan current as your health changes.

No referral is needed. You can book directly with our team, and we coordinate with your other providers whenever that helps your care.

Onyx is primarily a cash-pay practice, which lets our doctors spend real time with you rather than answer to insurance requirements. For many naturopathic visits, we can provide a detailed superbill you can submit to your insurer for possible out-of-network reimbursement.

Yes. Onyx combines root-cause functional medicine with physician-led aesthetics, so you can care for how you feel and how you look under one roof.

START HERE

Ready to find the why?

Book directly with our team and take the first step toward real answers, inside and out.