Regenerative Treatment Patients

Feel like your vivacious self once again

Pioneering regenerative treatments and pain management procedures to rejuvenate your body, mind, and spirit.

Aging gracefully doesn’t need to include pain

The back or full-body pain you experience may be creeping into other areas of your life, affecting the way you feel and look.


  • Struggling to get a comfortable night’s sleep?
  • Dealing with the physical and emotional effects of menopause?
  • Experiencing weight loss resistance, memory loss, or depression?
  • Feeling less resilient and strong?

Does It Sometimes Feel Like You’re Losing Your Sense Of Self?

Being self-conscious about your body or mind can be worrisome, but there is a way to regain your vitality.

With a Fulbright Scholar and Cleveland Clinic Fellowship-trained specialist on your side, you’ll be ecstatic about your new energy and vibrancy.

Kaylea Boutwell Lenarz, MD is dedicated to helping you take control of your body

With over 15 years of allopathic pain management specialty training and an additional 10 years in independent practice, Dr. Boutwell Lenarz is a trailblazer in pain management and regenerative techniques.


Through the utilization of scientifically-proven OrthoBiologic products — complemented by the nutrition, stress management, fitness, and sleep restoration strategies Dr. Boutwell Lenarz uses herself — we improve your pain and your full body health.

You not only feel more energized, confident, and free, you look it too.

The Katalyst Difference

Exceptional Expertise

Through her Ivy League education and Board-Certified training, Kaylea Boutwell Lenarz, MD brings exceptional knowledge and expertise around global pain management and body regeneration to the table.

Boutique Experience

When you’re at Katalyst, you’ll receive the exclusive treatment you need to feel like yourself again. We ensure our patients are respected, comfortable, and confident about their care plans.

Outstanding Results

We leave no stone unturned. Through a range of treatment protocols, we help you achieve the results you’re after, whether you want to regain your energy and strength or look rejuvenated.

Knowledge Sharing

Dr. Boutwell Lenarz is well known for an unending curiosity and enthusiasm for sharing sound knowledge for the benefit of her friends, family, and patients. There is nothing she enjoys more than an engaging conversation that leads to another extraordinary patient outcome.

Happy, Pain Free Patients

First, she actually cares about you, she wants you to have success, and she won’t stop till you are happy. Dr. Boutwell is very experienced in her profession and dedicated to what she does. She’s also more like family than a doctor. Very down to earth. She helps me by making me believe in myself and understanding that anything is possible and failure is not an option. I am so glad she is my doctor and you will be too. Recommendation 100 percent!

Ironton, MO

Hey Dr. Boutwell! Wow, It has been a long road since we became Dr/Patient in early 2017. I'm not sure where I would be today if not for you and your wonderful staff guiding me on that path. You are an INCREDIBLE doctor, but more importantly, a better person who always had a smile on your face! Thank you for being my doctor and hopefully my friend. Take care and God bless you!

East Carondelet, Illinois

Dr. Boutwell is a patient's dream to find. She is kind, patient, takes the time to make sure you understand everything she is saying, and answer any questions. Dr. Boutwell is continually educating herself and learning new procedures for the simple reason of helping her patients, not to display a bunch of certificates. She truly wants to help be a part of your journey of achieving a pain-free life. She has personally helped me after a car accident left me in constant pain and I am truly grateful to her.

St. Louis, MO

When my husband first encountered Dr. Boutwell, we walked into her office “beat up” by surgeons and we both had a doubtful attitude she could help with the enormous pain from 3 major back surgeries. Our lives were in shambles. Pain destroys you and everyone around you. The moment she sat with us and listened to my husband's story, I knew at that moment angels walked among us... corny, right? But it’ll be 3 years this September my husband has had continued pain relief With Dr. Boutwell... something I thought would never happen. I know she saved him... she saved us. She was the light at the end of a very dark tunnel.

Jackson, MO

Here’s what to expect

Katalyst isn’t your typical specialist's office. Every member of the team here is committed to ensuring your comfort so you can achieve the results you’re after.


Establishing your goals: What do you want to do that you aren’t able to right now? We want to know so we can help you get there.


Understanding your pain: We want to understand how your pain has been affecting your life. Tell us what it has taken away from you.


Starting your journey: With a strong understanding of your health, we craft your roadmap to optimal health, using both traditional and functional medicine.


Achieving results: Not only do we strive to eradicate your pain, we are laser-focused on helping you help you feel more alive, more confident, and more free.

Upleveling your life — and your health — starts with Katalyst