We believe in a personalized style of medicine that focuses on finding the hidden underlying causes rather than just treating the symptoms.

At Catalyst Health, We Practice Personalized Medicine

The Functional Medicine approach focuses on addressing the underlying causes of symptoms and disease, taking into account each patient’s unique genetic and environmental factors which have led to their system imbalances.

We believe in creating a therapeutic partnership with our patients, listening carefully to our patients. Our integrative approach utilizes the best tools and training from conventional medicine while incorporating the latest research on treatments and testing and a holistic perspective.

Our approach is individualized, patient-centered, and science-based.

Common conditions we address: 

Some of the most common conditions seen and treated at Catalyst Health include:

  • Irritable Bowel Syndrome
  • Brain Fog
  • SIBO
  • GERD/heartburn
  • Fatigue
  • Autoimmune conditions
  • High cholesterol
  • Pre-Diabetes
  • Metabolic Syndrome
  • Anxiety
  • Depression
  • Thyroid conditions

Our Functional Medicine Approach:

  • Is holistically oriented, recognizing the roles of mind, body and spirit
  • Utilizes a variety of treatment modalities
  • Focuses on optimal health – not just the absence of symptoms or disease
  • Requires you to take an active role in your health
  • Acknowledges the multi-factorial nature of complex health problems, requiring a multi-dimensional approach
  • Harnesses the body’s ability to heal itself, primarily utilizing natural therapies

Our Philosophy:

At Catalyst Health, we recognize that one disease can have many contributing factors, and that contributing factors such as inflammation can result in many different symptoms and diagnoses, depending on an individual’s genetics and lifestyle factors. As a result, patients are treated holistically. For example, evaluating intestinal health is important in treating brain symptoms, because of the role of the gut in immune function and inflammation, which can have enormous effects on the brain.

In the current conventional medical model, the focus is on acute care and symptom reduction, or “a pill for an ill”. In contrast, the Functional Medicine approach is ideally suited for effective treatment of our current epidemic of chronic disease, because it recognizes the multitude of factors that can lead to illness and that these factors can differ between patients. Treatment plans are personalized to address the identified specific underlying causes. As a result of addressing root causes, patients get real results, and lasting benefit can be achieved.

How It Works

At Catalyst Health, our “SPARK Your Vitality” Program is a unique, comprehensive functional medicine program. Most patients experience significant improvements in symptoms within the first several months.


Speak to our patient coordinator about scheduling a Vitality Strategy Session

This session is a complimentary call with Dr. McCarthy where she will review your health challenges with you and recommend a strategy for reaching your health goals. At this point she can also explore with you whether our program is the right fit for you. 


Enroll in Our "SPARK Your Vitality" Functional Medicine Program

Then complete your comprehensive online intake questionnaire and schedule your first appointment with Dr. McCarthy to review your questionnaire, health history and your Functional Medicine analysis . 


Comprehensive Support for Your Health Goals

Our program includes a powerful combination of functional medicine expertise and support for healthy lifestyle changes.

One-on-one follow up visits with Dr. McCarthy to review labs, prescribe and tailor treatment, and assess progress.

One-on-one sessions with our Brain Health Specialist, Michelle Karaman Robison, MA. These targeted and personalized sessions will show you how to rewire your brain to comprehensively change how your body reacts to stress, illness and dysregulation of the body/mind systems. You will be supported with specific lifestyle changes and given the tools to stay motivated and inspired for a long and healthy life 

One-on-one sessions with our holistic nutritionist, Amy Hillman-Siracusa, MA, to personalize your nutrition plan and support you in making dietary changes and creating new health habits.

Patient portal contact with our team is included.  Plus, direct lab pricing, personalized supplement recommendations, and 10% off Prescriber-only supplements.

At Catalyst Health you’ll experience a collaborative care approach with our team.

Wonder If Our “SPARK Your Vitality” Program Is Right For You?

Hear From Our Clients

“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

“I was struggling with sleep problems and anxiety that came on quickly. I tried to self-medicate but that didn’t work and I knew it was a temporary fix. I expected Dr McCarthy to put me on antidepressants, instead she said let’s look at your cortisol levels, diet and other possible deficiencies. I was a bit hesitant at first but I was motivated. Over time 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

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.