Welcome to Our Center...where Health is a Choice

Tarrytown Functional Medicine

A complete approach to medicine practiced by Jill Fetell, MD.

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Our Mission is to facilitate healing for patients by providing multiple disciplines and modalities that really work.

Functional Medicine testing gets to the root cause to fix the underlying imbalances in the body

About Tarrytown Functional Medicine


Tarrytown Functional Medicine brings together the best of traditional and complementary medicine to offer a complete approach to wellness called Functional Medicine.   Whether you’re suffering from a specific ailment or are looking to improve your health more generally, we’ll concentrate on your overall well being, not just a particular symptom or disease.

In Functional Medicine we look at the whole body as a system in which all the organs depend on each other and are interrelated.  We use laboratory and nutritional testing to find out the underlying causes of the symptoms you are experiencing.  Then we make an individualized program to correct the imbalances and deficiencies. 

This might consist of medications, supplements, weight loss and diet programs, or natural pain management consisting of acupuncture and frequency specific micro-current, depending on what you need.  



The power is in the in the accuracy of the testing and the combination of traditional and holistic approaches. 

If you have existing health challenges, we look to identify and treat underlying issues that may be contributing to the severity of your condition. If you’re essentially healthy, we focus on identifying imbalances that might be preventing you from feeling your best, and spotting risk factors that could cause illness in the future.

Our Services


We take a holistic approach to medicine and offer many services.


We can measure the terrain of the gastrointestinal tract, antioxidant vitamins, toxic elements, fatty acids, amino acids, and markers of oxidation, toxic exposures, detoxification, and adrenal stress.

Functional Lab Testing

We use laboratory testing to find the underlying causes of the symptoms you are experiencing. Then we make an individualized program to correct the imbalances and deficiencies. 

Integrative Dermatology

By observing the skin, we can assess many factors which effect the body’s state of health, including nutrition, toxicity, stress, accelerated aging, and exercise, or lack of it. 


Acupuncture is an essential part of traditional Oriental Medicine, which works with the natural vital energy called chi, inherent within all living things, to promote the body’s ability to heal itself.

Our Successes


We are grateful to our patients who have provided feedback!

Functional Medicine

I have seen a huge difference in my son starting your program. I have my happy son back!!! I like to give credit where credit is due and let someone know when they did a great job. Thank you for all of your help! 


Dr. Fetell is the first person who has given me a prescription for my face that has actually worked! In one appointment I have gotten better results than the countless visits with other doctors. Highly recommended!

Weight Loss

People have stopped me and said, “What are you doing?” After all the diets I’ve done, this one’s the one that really works. Dr. Fetell has helped me through my weight loss and motivated me. She can help anyone lose weight!   


This is the last time we’ll get together for acupuncture because I’m all better! I took a four-hour drive without pain at all in my neck and back. I wouldn’t have believed it! I highly recommend you for acupuncture! 

~ Pat, G. 

~ Chris, M. 

~ Luz, S. 

~ Rosa D.   

Dr. Fetell’s Recent Blog Posts

Thermography – Radiation-Free Breast Evaluation

Thermography – Radiation-Free Breast Evaluation

  Recently I have had several patients who had a screening mammography done and were told their breasts were dense. What does that mean exactly? Does this mean they have an increased risk of breast cancer? What Causes Dense Breasts? Breast tissue is made up of...

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Vitamin C and CORONAVIRUS – China is Using it!

Vitamin C and CORONAVIRUS – China is Using it!

Vitamin C is an essential vitamin, meaning your body can’t produce it. It’s an antioxidant and confers the following benefits (among many others): 1. Helps maintain your skin, bones, and connective tissue 2. Promotes wound healing 3. Helps with high blood pressure 4....

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Can Stress Cause White Hair?

Can Stress Cause White Hair?

According to an article in the Wellness Section of the New York Times on Tuesday, January 28, 2020, researchers have discovered the reason for the hair whitening change and it is related to stress hormones. In mice, stressful events damage the stem cells that are responsible for producing pigment in hair.

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