About Catalyst Health

Do you know deep down that something is not right with your health? Do you wish someone would really listen and take your story seriously? Are you looking for someone who can help you find answers and show you what to do to feel better?

At Catalyst Health, we listen. We understand. With advanced testing and the systems-based functional medicine approach, we help you figure out what’s really going on. We develop a personalized treatment plan that’s as unique as you are. And we support you in making the nutrition and lifestyle changes that will create lasting health.

Our Core Values Of Care

An Integrative Approach

Rooted in our focus on participatory patient care, it’s our mission to empower you with the knowledge and support to create health yourself, no matter where you are right now.

Guided by our care team, you will experience our integrative approach, drawing from both cutting edge Functional Medicine and the best of conventional medical training – including smart lifestyle modifications that will significantly improve your health and symptoms.


Dedicated Attention

You’ll receive dedicated attention from our care team, including our physician, lifestyle support therapist, and patient care coordinator.

Before your first visit, Dr. McCarthy will review your detailed intake information. Then during your initial consultation, you will meet with Dr. McCarthy to review the details of your personal story. She will discuss possible root causes of your symptoms and chart the course for your program of care.

During your time in our program, you’ll be supported with our unique lifestyle support therapy sessions and participate in workshops especially for our Catalyst Health community.

Personalized Care

No patient is exactly the same. Together we will get to the underlying causes of your symptoms using diagnostic tests that your current doctor may not even know about.

We’ll explore your situation holistically, uncovering factors in your life that are contributing to how you feel. We’ll guide you in implementing a “lifestyle prescription” that puts you back on the road to health.

Innovative Treatments

Did you know that it takes on average 17 years for clinical breakthroughs to make their way into your doctor’s office? At Catalyst Health, our entire team is committed to bringing you cutting edge knowledge and therapies.

We are life-long learners, always advancing our knowledge and seeking out innovative, out-of-the-box ideas to help our patients achieve their health goals.


Root Cause Resolution

Unlike traditional healthcare, we focus on getting to the root of the problem – identifying the imbalances in your body’s systems that are responsible for the symptoms you’re experiencing right now.

This is the beauty of functional medicine: we seek to give you solutions, not more bandaids to cover up the symptoms, or treating side effects of drugs with even more drugs.

Co-Creating Health

The word “Doctor” comes from the latin word “docere,” which means “to teach”. We see our role as teacher and guide. We partner with you, showing you to how heal yourself and stay healthy.

Are You Ready To Transform Your Health In The Next
10 Days?

The Philosophy That Drives Us

Dr. McCarthy founded Catalyst Health based on participatory care, where the patient is an instrumental partner in returning their body back to health and keeping it healthy.

We don’t have pre-determined ideas about a diagnosis–first we develop a full understanding of a patient’s situation. Then we search for underlying causes of your symptoms, looking in places that you may previously have thought were unconnected. For example, your autoimmunity, PMS or brain fog may be due to inflammation coming from your gut.

We integrate advanced testing with recent research and our clinical experience. You will receive an innovative, integrative treatment plan and support for making the changes that will transform your health.

About Catalyst Health

Catalyst Health was founded by Dr. Tracy McCarthy, an IFM-certified Functional Medicine Practitioner with more than 10 years of medical experience. Dr. McCarthy changed the focus of her practice to functional medicine after seeing the power of identifying and treating root causes and becoming frustrated with the limited benefit of pharmaceuticals.

Since we started, we have empowered patients to take charge of their health and resolve many chronic conditions such as anxiety, IBS, PMS, fatigue, and many autoimmune-related symptoms.

About Tracy McCarthy, MD

Dr. McCarthy received her medical degree from the University of California, Davis, School of Medicine. Prior to that, she completed her undergraduate studies at the UC Davis, receiving a B.S. in Chemical and Biochemical Engineering, with a minor in German.

She completed her internship and psychiatric residency at UC Davis, Department of Psychiatry, and then began her training with the Institute for Functional Medicine, ultimately becoming an IFM Certified Functional Medicine Practitioner.

She is passionate about the power of real food, mindset, and community to create health.

“Overtime my sleeping improved and I was gradually able to taper off of the medications and even better I stopped smoking…”

Overtime my sleeping improved and I was gradually able to taper off of the medications and even better I stopped smoking. I have cut out junk food and sugar and I am eating a lot more vegetables. I have even cut down on the amount of coffee I drink. I was drinking it all day and now I enjoy green tea in the afternoon. I am grateful for normal sleep more energy a new job and better relationships. I feel like I have more confidence and I am an improved version of myself.

I would encourage you to work with Dr. McCarthy and Michelle Robison. It is not a quick fix, but if you keep at it, it will pay off and your life will change. I found it to be the best combination to work together.

– Jim, Fair Oaks CA

“I felt like I had a plan and some hope.…”

I came to Dr McCarthy because of psoriatic arthritis pain. My other Doctors wanted to put me on a variety of immune suppressant drugs that had scary side effects. I did not want to go that route until I explored all my other options. At the time of my first appointment I was having flares that lasted for 2-3 weeks once a month. From my first appointment I felt like I had a plan and some hope. I made the diet changes and took the supplements that she recommended. I started feeling better within the first few weeks. Don’t hesitate to make an appointment, since I started with the program I have not had a flare up of my symptoms. It has changed my life.

– Kim, Sacramento CA

“With her guidance, I was able to discover the cause of my depression was inflammation.”

Dr. McCarthy changed my life. I used to sob uncontrollably even when I was taking multiple antidepressant medications. With her guidance, I was able to discover the cause of my depression was inflammation. After understanding the importance of a healthy diet, exercise, nutritional supplements, infrared saunas, salt baths and morning light box, I phased off the medications over a year ago. At age 20, I am able to enjoy life even with a busy often stressful college schedule. Now if I have a rare “down day”, I bounce right back. Thank you Dr. McCarthy for giving me tools to have a healthy, happy life!

– Elsa, Sacramento CA

Take The First Step Today On Your Journey Back To Health

Maybe you have some questions you’d like to ask before you make a decision on becoming a patient. Our patient coordinator is standing by, happy to answer any questions you have to see whether or not Catalyst Health is right for you.