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Our Founder

Meet Kat

Hello! I'm Kat, a nurse practitioner specializing in functional medicine and drawing from my own journey with acne, gut issues, and hormonal imbalance, I'm here to guide you on an integrative and personalized path to optimal health. Together, we'll start where you're at, working closely to develop a bio-individualized plan tailored to uncover the root cause of your health issues. By merging the best of conventional medicine and functional medicine, we will embark on a transformative journey towards long-lasting well-being. Let's take the first step towards unlocking your body's unique healing potential!  

kat, founder and owner of tulah
Functional Nutritionist Vanessa

Our Functional Nutritionist

Meet Vanessa

Vanessa van der Linden is a Certified Nutrition Specialist (CNS) and Functional Nutritionist with a Master's degree in Integrative and Functional Nutrition. She works with her clients to uncover and address the root causes of hormone, gut, and metabolic imbalances using a personalized, root-cause approach. With a deep-rooted belief in food as medicine, Vanessa blends science-backed strategies with compassionate, individualized care. She empowers clients to better understand their bodies and make sustainable changes that support long-term wellness.  



What Tulah means

Think of bio-individualized health as a beautifully crafted poem. Just as a poem requires balance and harmony between its various elements, bio-individualized health emphasizes finding the right balance for your unique biological needs.

Just as a poem blends different words, rhythms, and tones to create meaning, bio-individualized health integrates personalized approaches to optimize your well-being. It acknowledges that what works for one person may not work for another, emphasizing the importance of tailoring health practices to your specific needs.

Each person's health journey is like a stanza in this poem, with different factors playing a role in maintaining balance. It involves understanding your body's specific requirements, such as nutrition, exercise, sleep, stress management, and other individualized aspects.

So, envision our pursuit of bio-individualized health as a poetic endeavor, where you explore the delicate balance necessary for your unique composition, ultimately creating a harmonious and fulfilling experience of well-being.

A bit more about us

Katherine "Kat" Roy, MS, APRN, FNP-C, is an experienced and board-certified family nurse practitioner with over 15 years of nursing expertise. Her nursing career in the United States commenced with an incredible personal journey when she independently immigrated to the country in 2006. With unwavering determination, Kat embraced the opportunities that awaited her and discovered her true calling while working as a dedicated full-time labor and delivery nurse at a prestigious Southern California hospital.

Alongside her work in labor and delivery, Kat ventured into the field of aesthetics part-time starting in 2008. With a deep-rooted passion for holistic healing and the pursuit of optimal well-being, she wholeheartedly dedicated her skills and expertise to helping others. Kat firmly believes in the power of achieving holistic balance and supports her patients on their individual health journeys with genuine care and empathy. Her own personal journey serves as the foundation for her unwavering commitment to lead by example and provide wholehearted support to her patients as they strive for optimal health and well-being.

Beyond her patient care role, Kat embraces her love for yoga and meditation as a committed guide and teacher. With a comprehensive understanding of various modalities and therapies in Eastern medicine, she shares her profound knowledge with others. Yoga became an integral part of Kat's life during her early twenties, fueling her ambition to become a yoga teacher. Despite life's twists and turns, she made a personal commitment. As a meaningful gift for her 40th birthday, she grasped the opportunity to enroll in a teacher training program, transforming her dream into reality.

Kat firmly recognizes the profound importance of the mind-body connection for overall health and well-being. She values nurturing this connection as a fundamental aspect of achieving holistic wellness. Through her teachings, she guides her students on a transformative journey towards balance, inner peace, and optimal health. Kat's dedication to yoga, meditation, and the integration of mind and body radiates in her approach, continuously inspiring others to prioritize their well-being through the power of the mind-body connection.

In her leisure time, you'll often find Kat in her kitchen, happily preparing delicious and wholesome meals for her loved ones. She also finds solace in her yoga practice, embarks on thrilling adventures worldwide, and cherishes priceless moments with her spouse, children, and adored Goldendoodle, Teddy. Kat's infectious passion for life serves as a vibrant source of inspiration, motivating her patients to embrace a fulfilling existence with zeal and vitality.

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