You are unique.

Your healthcare
should be too.

Functional Medicine
is the Answer.

Integrative Functional Medicine in Denver, Colorado

Health and well-being are complex. We know we deserve more than a one-size-fits-all approach to medicine but, too often, the routinized, assembly-line care provided in standard offices gives us just that.

At Tendwell’s functional medicine office in Denver, Colorado, we take a different approach. Before we even get started on treatment, we take time to develop a deep understanding of each patient’s unique risk factors, genetics, environment, outlooks and histories. Equally important: we listen carefully and work collaboratively with patients – after all, many patients with chronic conditions come to us after many frustrating attempts to get real attention from standard practitioners.

Armed with the right information, we develop individualized health plans tailored to the precise factors at the root of dysfunction.

Meet Susannah

Susannah is an Institute for Functional Medicine (IFM) certified practitioner who has been helping patients define and realize their best health for over 20 years. Susannah received her training at the University of San Francisco, New York University, and the Institute for Functional Medicine.
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We address root causes, not just lists of symptoms

We start with a comprehensive assessment of your health—and we mean comprehensive—going far beyond the approach taken by standard practices. We probe deeply into your medical history and concerns and, in most cases, we use specialized lab tests (hormonal, genetic, microbiome, etc…) for deeper insights into the root causes of dysfunction.

We then collaborate with you to create customized health plans to address chronic illness, to optimize long term health, and to get you to a place of wellness. And we don’t leave it all up to you to get better: we continue to support you with coaching and regular support visits to make sure your plan is working and to address any issues as they arise.

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Services

Perimenopause &
Menopausal HRT

We support women through hormonal shifts with personalized care, including bioidentical hormone replacement therapy, to protect bone, brain, and heart health—and restore balance.

Weight Loss
Resistance

When your body resists weight loss, we investigate the deeper drivers—like hormones, inflammation, toxins, and stress—to create sustainable change and lasting energy.

Mold Detox

Chronic mold exposure can silently affect your brain, hormones, and energy. We guide you through gentle, effective detox strategies using functional testing and targeted support.

Thyroid Health

Whether it’s Hashimoto’s, hypothyroidism, or suboptimal thyroid function, we take a root-cause approach to restore balance and support your metabolism, mood, and hormones.

Gut Health

We work to heal the gut by addressing microbiome imbalances, food sensitivities, leaky gut, and digestion to support overall vitality and immune health.

Specialty Areas

  • ADHD support
  • Brain health optimization
  • Constipation & bloating
  • Decreased libido
  • Extending the best years of health
  • Fertility concerns
  • Gut health
  • Hashimoto’s disease
  • Hormonal imbalances (men & women)
  • Hormone Replacement Therapy (HRT)
  • Hypothyroidism

y

  • Irritable bowel syndrome “IBS”
  • Long term health span optimization
  • Menopause Hormone Therapy (MHT)
  • Mold toxicity
  • Osteoporosis
  • Perimenopause & menopause
  • PMS & PMDD
  • Prevention of Alzheimer’s disease
    & other forms of cognitive decline
  • SIBO
  • Thyroid conditions
  • Women’s Health

Recent Blogs

Constipation: Why Healthy Bowel Movements Matter More Than You Think

Constipation: Why Healthy Bowel Movements Matter More Than You Think

Some temporary water retention is incredibly common and usually does not mean you've gained fat or that your hormones are harming you. For most women, patience really does pay off. Support your body with hydration, movement, potassium-rich foods, adequate protein, fiber, good sleep, and time. If you're still feeling persistently swollen after 3-4 months, or the symptoms are becoming severe, it's worth talking with your healthcare provider. Sometimes a small adjustment to your hormone regimen can make all the difference.
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Hair Loss in Women: Why It Happens and What We Look at here at Tendwell

Hair Loss in Women: Why It Happens and What We Look at here at Tendwell

Hair loss is one of those symptoms that can feel incredibly frustrating—and there is rarely just one possible cause. At Tendwell Functional Medicine, when someone comes to us concerned about increased shedding, thinning hair, a widening part, or changes in hair texture, we like to take a deeper look at why it may be happening rather than focusing only on the hair itself.
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Could Ureaplasma Be Affecting Your Fertility or Urinary Symptoms?

Could Ureaplasma Be Affecting Your Fertility or Urinary Symptoms?

If you’ve been dealing with recurrent urinary symptoms, vaginal irritation, or unexplained fertility challenges, you may have heard of Ureaplasma—or maybe you’ve never heard of it at all. Ureaplasma is a very small type of bacteria that can live in the urinary and reproductive tracts. It’s actually fairly common, and plenty of people carry it without ever having symptoms. So, a positive test doesn’t necessarily mean Ureaplasma is causing a problem or needs to be treated. But in certain patients, I do think it can be worth looking for.
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Pumpkin Muffins — Gluten-Free & Perfect for Fall

Pumpkin Muffins — Gluten-Free & Perfect for Fall

'Tis the season for pumpkin! These gluten-free pumpkin muffins are super moist, delicious, and easy to make. They are perfect for a fall breakfast, after-school snack, or something sweet to have with your morning coffee.
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Cleerly vs. Coronary Calcium Score: What’s the Difference?

Cleerly vs. Coronary Calcium Score: What’s the Difference?

When we talk about preventing heart disease, cholesterol numbers are only part of the story. Tests such as ApoB, LDL cholesterol, Lp(a), blood pressure, blood sugar, and inflammatory markers can tell us about cardiovascular risk—but sometimes we want to answer a more direct question: Is there actually plaque in the coronary arteries? Two tests you may hear about are a coronary artery calcium (CAC) score and Cleerly coronary plaque analysis. They both look for coronary artery disease, but they provide very different information.
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Anti-Ovary Antibodies (AOA): A Functional Medicine Perspective

Anti-Ovary Antibodies (AOA): A Functional Medicine Perspective

Anti-ovary antibodies (AOAs) are autoantibodies directed against proteins within the ovary. Their presence may suggest that the immune system is recognizing ovarian tissue as a target. Although testing is not part of the standard infertility evaluation and the assays have not yet been standardized, ovarian autoimmunity is increasingly recognized as a potential contributor in a subset of women with reproductive challenges. In Functional Medicine, we view anti-ovary antibodies as one piece of a larger immune assessment, rather than a stand-alone diagnostic test.
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"Susannah listened to me and was able to direct my anxiety into tangible solutions that made sense to me."
Jeff
"The best doctor's office experience I have ever had! She was very informative and made me very comfortable."
Gayle K.
"I have seen Susannah for years and absolutely adore her. She is professional, thoughtful and excellent in her role as a health care professional."
Brianna J.
"Susannah Kerwin is an outstanding professional; informative, genuinely concerned and attentive, and all about helping patients to establish and reach solid health goals. She’s a major member of my team & value her immensely!"
Deidre R.

Book a free consultation

Let’s reserve some time to discuss your background, interests and how we can help you achieve your best health. After booking, you will be sent a link to a Zoom meeting where you can meet with one of our practitioners.

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