Functional Medicine

Expert Advice

Say YES to Functional Medicine

Functional medicine is a personalized, systems-oriented model that empowers patients and practitioners to achieve the highest expression of health by working in collaboration to address the underlying causes of disease.” -

My Mission:

To create radical change and true wellness in my patients through functional medicine, unwavering dedication and the destruction of limiting beliefs.

My Story:

When I was 38 I discovered a way to reverse the symptoms of my early menopause. You can read the full story here, but the short version is this: standard medical practices, which I call “factory medicine,” failed me. Doctors couldn’t or wouldn’t put in the time to help me find out the root cause of my health crisis. They wanted to hand me a bottle of pills and move on.

As a doctor, a scientist and a woman, I rejected that. The journey to finding my own cure led me to functional medicine: a personalized, systems-oriented model that empowers you and I to achieve the highest expression of your health by addressing the underlying causes of your problems.

I said no to factory medicine, and I’ve created a practice that welcomes you to do the same. Your journey to real wellness begins now. Due to high new patient demand and a very limited practice size, we are accepting applications for new patients.

Contact our office

Functional Medicine Services

Hormone Balance

We provide a thorough evaluation for hormone symptoms including a detailed intake, diet and lifestyle evaluation, hormone, thyroid, autoimmune and vitamin testing for men and women. Dr. Yu is an expert in the use of herbs and supplements and the use of natural bio-identical hormone therapy. She utilizes regular and compounding pharmacies to formulate hormones that are tailored specifically for each patient.

Watch Dr. Yu discuss Vitamin & Hormone Balance

Intestinal Health

Where your regular and gastrointestinal physicians stop is where we start. We utilize the latest in food intolerance testing, organic acid urine testing, expansive stool panels, and SIBO testing. Dr. Yu and our Holistic Nutritionist work one on one with patients through extended visits to get to the root cause of the intestinal issues and achieve dramatic repair and results in gut health.

Some conditions we specialize in are: irritable bowel, inflammatory bowel diseases, celiac disease, and candida. We focus on intestinal health in children and in children with autism, ADD and spectrum disorders. Dr. Yu also is an expert in the use of medicinal herbs and supplements to help heal leaky gut and the compounding of medications such as LDN.

Food Intolerance vs. Food Allergy

Autoimmune Disorders

A functional approach means identifying patients with hidden autoimmune disorders and utilizing all the tools to calm the autoimmune attack. Dr. Yu and our Holistic Nutritionist collaborate with you to ensure food intolerances and blood sugar regulation are the key to your success.

We also do vitamin testing, hormone testing, and gut infection testing, if necessary ,to ensure all the symptoms of autoimmune attack are diminished. As Dr.Yu frequently says, the zebras in other practices that no one knows how to deal with or dismisses are the typical everyday patient we see here that experience radical changes in their health from our functional approach.

Some of the autoimmune conditions we focus on are: Hashimotos, rheumatoid arthritis, infertility, ulcerative colitis, Crohn’s, fibromyalgia.

Why Autoimmune Disease Matters (A Lot)


This condition is often misunderstood by patients and physicians alike. There are underlying root causes to fibromyalgia that are frequently never explored including autoimmune disease, hormone imbalance, blood sugar dysregulation, mitochondrial disorders, chronic infections like candida, and the role of environmental toxin exposures. We focus on fibromyalgia and get results by evaluating and treating root causes and having many tools to deal with fibromyalgia instead of just the medications.


We focus on a functional approach for kids with behavorial, psychiauto gut intestinal health such as celiac disease. Most of our pediatric clients keep their primary care providers for physicals and vaccinations and utilize us as a consultant and acute visits.

Testing we frequently use in children we see include: full thyroid panels, vitamin, food intolerance, organic acid testing, and brain neurotransmitters testing. And our functional nutritionist works with families to tailor diets for specific health conditions to take the guess work out of meal planning.


We do brain neurotransmitter testing, focus on amino acid support and manage prescriptions when necessary. We highly encourage our patients to also get their food intolerances, hormones, and vitamins tested as they are a crucial part of a functional medicine approach.

Opioid Detox and Suboxone maintenance therapy

We provide on-site office detox programs for patients desiring to end their dependence on opioids. We work with patients discharging from inpatient programs looking for an outpatient physician to continue to manage their suboxone medication.

Supplement Dispensary

We provide data driven approach to supplementations. We take time to educate patients on their results and explain the need for supplements. We do not believe in over supplementation nor over medication. We provide a rational balanced approach for those interested in supplements or medications.

Diagnostic Tests offered by us (some are covered by insurances, some are not):

  • Food Intolerance
  • Hormone panels (male and female)
  • Adrenal Fatigue testing (urine or saliva)
  • Brain Neurotransmitter testing (urine for metabolites)
  • Gut infection stool testing (extensive panels for yeast, gut flora, other bacterial, parasitic infections)
  • OAT (Organic Oat testing)
  • Environmental Toxin panels
  • Functional vitamin testing

Private Yoga Sessions

We believe that movement and mindfulness can be instrumental parts of health and wellbeing. Have you always wanted to try yoga or meditation but feel uncomfortable going to a public class? Would you feel more comfortable in the privacy of your own home? Or with a small group of people you know?

Frankie Niwot our functional nutritionist is a certified yoga instructor with five years experience teaching in the Portland area. She is currently acquiring her 500 hours certification hours focusing in yoga therapy. For more information about her background and services

One on One or Partner 1 Hour Sessions: 3 class package for $200 Small Groups 3-6 : priced accordingly

Distance Consultations

We offer options to see patients in other states with or without travel to Oregon via web visits. To utilize your insurance benefits, we do require an in person first visit. To not utilize your insurance or if you don’t have insurance we offer time of service payment options.

Food Intolerance Distance Package: Designed for those who only want food intolerance test and consultation.

Forget all the confusion, get real answers from a functional medicine MD’s practice who has done thousands of these tests. You can do this test from the comfort of your own home and get your results interpreted and consult with a functional nutritionist to make sure you accurately implement the changes. It’s the whole package from test, implementation, and follow up. One on one support and guidance for understanding the hidden cause of your health disharmony. The support and answers you have been waiting for offered by a functional nutritionist.

Food Intolerance Distance Package


Thank you again for all of your help, I have had such a phenomenal experience working with you, I can't wait for the future. Thank you for being the kindest most caring doctor I've ever encountered, I will highly recommend you to anyone I come across and can send your way. Thank you again, -M

I just want to stop and thank you for our frank and insightful conversation yesterday. It has given me much to think about and a direction for moving forward. I have much to work out, but I have hope! I know this would not have happened in a traditional medical practice or with an average MD. I am grateful for being in that place

Dr. Maggie ROCKS!!! I felt listened to, understood AND heard! Not a very common experience from a provider! Feeling grateful! Thank You!!! - Tony

Excellent service and attention to detail by all I encountered, from front office staff to nurses and Doctor. - Jennifer

I so appreciate the time that Dr. Yu spends with me to explain test results. I never feel rushed out the door! – Linda

I have been a patient of Dr. Maggie Yu for over a year and ever so thankful for the overall CARE I have received from the very first appointment. I had experienced so much disappointment and utter frustration in numerous doctors/specialists over the last several years. I had to be my own self advocate over and over again! Dr Yu is a "GIFT" who validated and medically has helped significantly with my Hypothyroidism Hashimoto's autoimmune disease. – Priscilla

I've been a patient of Dr Yu for several years. She has been very helpful in unraveling and deepening my understanding of my complex chronic conditions. My increased quality of life is worth the investment. - Christine

We are both still following the diet. I'm losing weight and not aching as much. Jon is able to function normally with energy. 
We are soooooo thankful for your help nutritionally, as well as Maggie's diagnosis and expertise as his doctor!!!! We have a new lease on life.:) -Jon & Barb

I have been a patient of Dr. Yu's for many years. I am healthier than I have ever been, I have been able to get off almost all medications and I feel I owe my health to finding Dr. Yu. I had a lot of hard work to do, but she was 100% supportive of me on my wellness journey. I always recommend this practice. I have never been disappointed. -Kathryn

I am a cancer patient with complications from chemotherapy and a thyroid patient. Dr Yu knew exactly what was wrong and how to treat me. What five doctors and an emergency hospital stay could not do, she diagnosed in one visit. I have been getting better and she has helped me understand what is happening in my body. She takes on more naturopath approach that is so much better, she even gave me back my sex life! - Jennifer

Dr. Maggie Yu cares about her patients. I've needed to see her twice this week from a home accident I had. For both visits I was seen quickly. Dr. Yu is a real pro, and I get the strong feeling that she cares deeply about her work. - John

I have finally found a medical practice where I get the help I need. The entire staff is so friendly. Everyone treats you like a real person. When I have an appointment, I feel like I'm visiting friends. Dr. Yu has given me the help I need with my many health issues. I love that she has knowledge of alternative medicine, as well. I had never heard of concierge medicine before, but I am now a fan! - Trina

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