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About Serenity NP

How it started

Carolyn Johnson has been a Registered Nurse since 1995. She spent her early career working in the Labor and Delivery/ICU, the nursery, NICU, and Post Partum and has been in private practice for the last 15 years.

Carolyn started Serenity in 2015 with the goal of helping women live a full and healthy life through functional medicine. Today, she’s leading a team of specialized healthcare professionals and changing the lives of women in and around the McHenry County area.

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Meet the Team

Meet Rachael


Hi & welcome! My name is Rachael and I am the office coordinator here at SerenityNP. I have worked with Carolyn Johnson as a receptionist and administrative assistant for several years prior to transitioning with her to Crystal Lake.


In my spare time, I love spending time with my husband and 2 daughters. We enjoy watching sports (both my daughters play softball and volleyball), listening to live music, & just enjoying the outdoors whenever we can. I also love to cook, bake, and attempt DIY projects!


I will be the friendly face you see when you walk through our doors and the warm voice you hear when you call. I take pride in treating all clients with courtesy, demonstrating professionalism, and dedication to my work. I look forward to serving you during your journey with Carolyn.

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What Our Clients are Saying

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Client of 4 Years

Carolyn has a non-judgemental attitude and she asks for my thoughts on my treatment and is concerned about my well-being. I know I am in good hands under her care.

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Client of 2 Years

This place is fantastic and represents the future of healthcare; preventative, tailored, holistic approaches to fulfilling your health potential for long term success that taking a pill can’t provide.

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Client of 6 Years

Rachel at the front desk is stellar! As someone who despises making phone calls, calling Serenity is easy for me thanks to Rachel. Take charge of your health with the help of Serenity NP. You won’t regret it.

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