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

Saliva Testing for Endometriosis: A New Era in Diagnosis?

Saliva Testing for Endometriosis: A New Era in Diagnosis?

One of the most exciting developments in women's health over the past few years is the emergence of saliva-based testing for endometriosis. For decades, diagnosing endometriosis has been frustratingly slow. The average woman waits 7-10 years from the onset of symptoms to receive a diagnosis. Many are told their painful periods are "normal," while others undergo years of imaging, medications, or even surgery before finally getting answers.
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Cortisol & Menopause: Why Stress Can Feel So Different at Midlife

Cortisol & Menopause: Why Stress Can Feel So Different at Midlife

If you’ve reached perimenopause and suddenly feel like you just can’t handle stress the way you used to, you’re not imagining it. Maybe you’re waking up at 3:00 a.m. with your mind racing. You’re exhausted in the afternoon but somehow get a “second wind” at bedtime. Your anxiety feels heightened, your body composition is changing, or you simply feel more easily overwhelmed by things that wouldn’t have rattled you a few years ago. There are many reasons this can happen during the menopause transition, but one important piece of the puzzle is cortisol.
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Mindfulness-Based Stress Reduction (MBSR): A Science-Backed Way to Calm the Mind and Body

Mindfulness-Based Stress Reduction (MBSR): A Science-Backed Way to Calm the Mind and Body

Many of us spend our days rushing from one task to the next, constantly planning, worrying, or replaying the past. While stress is an unavoidable part of life, how we respond to it can have a profound impact on our health.
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Water Retention After Starting Hormone Therapy: Why It Happens (and What You Can Do About It)

Water Retention After Starting Hormone Therapy: Why It Happens (and What You Can Do About It)

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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How Your Nervous System May Be the Missing Piece in Healing Your Gut

How Your Nervous System May Be the Missing Piece in Healing Your Gut

When most people think about gut health, they think about food. Maybe they need to eliminate gluten. Maybe they have SIBO. Maybe they need probiotics, digestive enzymes, or more fiber. While all of those tools can be helpful, there's another piece of the puzzle that often gets overlooked: Your nervous system.
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Methylene Blue—Hype or Helpful? What the Research Actually Says

Methylene Blue—Hype or Helpful? What the Research Actually Says

Methylene blue has become one of the most talked-about compounds in the longevity and biohacking world. From social media influencers to physicians interested in mitochondrial medicine, it's being discussed as a potential tool for improving brain function, energy, and even healthy aging. But what exactly is it—and does the science support all of the excitement?
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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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