Personalized care. Whole-body insight. Real answers. Real Solutions.


Functional Medicine Doctor who specializes in Finding your root cause of your problem.


If you’re tired of temporary fixes and unanswered questions, a functional medicine doctor helps uncover what’s actually driving your symptoms — and creates a plan built around you.

+1-714-276-8234Free Health Assessment

Looking for a Functional Medicine Doctor Who Actually Listens?

Many people seek a functional medicine doctor after years of feeling unheard or rushed through appointments. At Vaughan Vitality, care begins with listening. We take time to understand your health history, symptoms, lifestyle, stress levels, and goals so we can identify patterns that traditional care often misses. Our approach is focused on clarity, connection, and long-term improvement, not temporary symptom control.

Our Approch

Functional medicine is a patient-centered approach that focuses on identifying and addressing the root causes of health concerns rather than masking symptoms. It looks at how the body’s systems work together and how lifestyle, nutrition, stress, and environment influence overall health.

A functional medicine doctor evaluates the whole person, not just a diagnosis. This includes reviewing medical history, current symptoms, lifestyle factors, and functional imbalances to create a personalized care plan that supports the body’s natural ability to heal.

Functional medicine supports long-term health by addressing underlying imbalances, improving system communication within the body, and helping patients understand why symptoms developed in the first place.

Conventional care often focuses on symptom management. Functional medicine focuses on identifying why symptoms exist and creating individualized strategies to support lasting improvement.

Functional medicine is commonly used for fatigue, digestive issues, hormone imbalance, inflammation, autoimmune patterns, stress-related symptoms, and unexplained health concerns.

How we can help


Natural Medicine
Personalized Care
Mind Body Balance
Gentle Treatment
Holistic Healing
Whole Person Wellness

Why Choose Us

Choosing a functional medicine doctor is a personal decision. At Vaughan Vitality, patients choose us because we prioritize time, communication, and individualized care. Our approach is thoughtful, supportive, and focused on helping you understand your health so you can make informed decisions with confidence.

DO YOU ACCEPT INSURANCE, MEDICARE, OR MEDICAID?

Our practice operates outside of the traditional insurance model so we can provide longer visits and truly personalized care. While we do not accept insurance, we are happy to provide a detailed receipt (superbill) for possible reimbursement depending on your plan. Also, we do accept HSA/FSA (health savings account) eligible expenses.

+1-714-276-8234Free Health Assessment

Our Services


At Vaughan Vitality, functional medicine care is built around understanding the whole person. We focus on identifying imbalances, supporting system function, and creating a clear plan that aligns with your body and lifestyle. Care is collaborative, guided, and designed to support long-term wellness rather than short-term fixes.

  • Applied Kinesiology
  • Bioidentical Hormone Replacement Therapy
  • Neurofeedback Brain Training
  • Nutrition
  • QEEG Brain Scans
  • Stool Test
  • Food Sensitivity Test
  • Heavy Metal Test
  • Mold Test
  • Cardiovascular Test
  • Hormones Test
  • Thyroid Test

We Help Our Patients With


How it Works


Step-by-step guided care designed to support healing and long-term balance.

Personalized Assessment

A comprehensive evaluation that looks beyond symptoms to understand your physical, emotional, and lifestyle patterns. This allows your homeopathic medicine doctor to create a truly individualized care plan.

Root-Cause Treatment Plan

Homeopathic remedies are selected based on your unique presentation, not just a diagnosis. The goal is to gently support the body’s natural ability to restore balance over time.

Digestive and Gut Support

Many chronic symptoms begin in the gut. Homeopathic care often focuses on improving digestion, absorption, and gut balance to support overall health and resilience.

Ongoing Care and Adjustment

Healing is not a one-time event. Your care plan is regularly reviewed and adjusted based on your progress, ensuring continued support as your health needs evolve.

About Dr, Kristi Vaughan


Dr. Kristi Vaughan is a dedicated and compassionate Homeopathic Medicine Doctor with a deep commitment to whole-person care. She takes the time to understand each patient’s unique health history, lifestyle, and concerns, focusing on identifying root causes rather than simply managing symptoms. With a patient-centered approach grounded in natural and evidence-informed homeopathic medicine, Dr. Vaughan supports individuals seeking gentle, personalized solutions for chronic and complex health challenges, helping them restore balance, resilience, and long-term vitality.

Dr. Vaughan has received numerous accolades, including the 2016 Award of Excellence in Holistic Medicine, the 2020 Top Doctor Award, and the 2023 Women in Medicine Top Functional Medicine Practitioner Award. She is the author of Thyroid Track and is a certified expert in Neurofeedback and QEEG.
As a prominent speaker and authority in functional integrative medicine, Dr. Vaughan has made a significant impact in her community, transforming countless lives through her unique approach, passion, and unwavering dedication to fostering positive change.Her areas of specialization include Autoimmune Disorders, Peri-menopause, Menopause, Thyroid Disease, Gut Dysfunction, Environmental Toxicities, and Brain Balancing.

What people say

Our treatment approaches can help prevent disease and, in some cases, reverse or see diseases go into remission, by supporting your body’s ability to heal naturally.

Contact Us


151 Kalmus Drive Suite E-130 – Costa Mesa, CA 92626

Phone: +1 (714) 434-9355

DISCLAIMER: THIS WEBSITE DOES NOT PROVIDE MEDICAL ADVICE. The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes only. No material on this site is intended to be a substitute for professional medical advice, diagnosis or treatment. Always see the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen of any kind, and never disregard professional medical advice or delay in seeking it because of something you have read on this website

Vaughan Vitality Wellness a Functional Medicine & Integrative Clinic, is located in Costa Mesa, CA, and serves patients throughout Costa Mesa, CA, and Georgia. These areas include but are not limited to Costa Mesa, CA, Newport Beach, CA, Huntington Beach, CA, Laguna Beach, CA, Long Beach, CA, Seal Beach, CA, San Clemente, CA, Dana Point, CA, Laguna Hills, CA, Aliso Viejo, Mission Viejo, CA, Irvine, CA, Tustin, CA, Santa Ana, CA, Laguna Woods, CA, Lake Forest, CA, Foothills, CA, Orange, CA, Fountain Valley, CA, Garden Grove, CA, Westminster, CA, Anaheim, CA, Riverside, CA, Yorba Linda, CA, and Brea, CA.

Hours


Monday to Friday from 9:00AM to 5:00PM

We are closed on most major holidays

In an emergency, please go directly to the nearest emergency room