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Natural Care Holistic
Health
Center

Personalized Functional Medicine, Holistic & Integrative Wellness in Denville, NJ

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Natural Care Holistic Health Center

Natural Care Holistic Health Center was founded in 2011 by Mariana Cuello, ND, with a vision of helping people restore health through natural and holistic approaches. Today, that vision continues through the next generation, with Tiffany Cuello Siegel, MSN, FNP-BC, expanding Natural Care to include functional and integrative healthcare alongside the holistic services our community has trusted for years.

WHAT WE OFFER

Medical & Holistic Wellness Services

MEDICAL & FUNCTIONAL CARE

Personalized medical care with an individualized, holistic approach.

IV & Injectable Wellness Therapy

Personalized nutrient and injectable therapies tailored to support your individual health goals.

HOLISTIC & BODY WELLNESS

Personalized holistic therapies to support your health and well-being.

TELEHEALTH & CONTINUING CARE

Personalized healthcare from the comfort of your home.

Payment Options

Flexible Payment Options.

Natural Care Holistic Health Center is a self-pay practice and does not accept or bill health insurance. We offer several payment options to make your care as convenient and accessible as possible.

Confirm your specific payment method at the time of booking — availability varies by service and provider.

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Insurance

We Do Not Accept Or Bill Health Insurance.

Natural Care Center is a self-pay practice.

 Insurance may cover eligible routine bloodwork through participating laboratories such as Labcorp. Specialized testing, diagnostics, medications, prescriptions, supplements, and outside services may require additional out-of-pocket costs.

Provider

Meet Our Provider

Tiffany Cuello Siegel, FNP-BC

Functional Medicine Provider

Tiffany Cuello Siegel’s path into holistic healing was inspired by her mother and co-founder, Mariana Cuello. From assisting in her mother’s practice to earning her nursing degree from Fairleigh Dickinson University, Tiffany developed a deep appreciation for both traditional and holistic approaches to wellness. She is a Board-Certified Colon Hydrotherapist through the International Association for Colon Hydrotherapy (I-ACT), holding an Instructor-Level certification, and a Board-Certified Family Nurse Practitioner with a focus on functional medicine. In addition to her clinical practice, Tiffany is passionate about education and serves as an instructor of colon hydrotherapy, guiding others on their path to healing and professional growth.

Providers

Meet Our Providers

Tiffany Cuello Siegel, MSN, FNP-BC

Board-Certified Family Nurse Practitioner 
Board-Certified Colon Hydrotherapist (Instructor Level – I-ACT)

Tiffany specializes in gut health and brings over a decade of experience in clinical practice and teaching, with a focus on functional medicine and a holistic approach to wellness.
Mariana Cuello, ND, LMT, CCHT

Board-Certified Naturopathic Doctor
Certified Colon Hydrotherapist (I-ACT)
Board-Certified Massage Therapist

With over 20 years of experience, Mariana specializes in gut health and focuses on identifying root causes through naturopathic medicine and holistic treatments.
Client Reviews

What Our Clients Say

EXCELLENT
Google star 1Google star 2Google star 3Google star 4Google star 5
Based on 177 reviews
Posted on Google Google
Olivia Restivo profile picture
Olivia Restivo
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I had a very positive experience here. The team is professional, warm and knowledgeable.
Posted on Google Google
Felicia Davis profile picture
Felicia Davis
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Love this service! Colonics here are smooth, clean and essential. Love Mariana and Tiffany!
Posted on Google Google
Barbara Pinto profile picture
Barbara Pinto
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I’m very grateful for the care I received at Natural Care Holistic Health Center. I came in looking for help with constipation and because I constantly felt bloated. I had tried other places before, but this place was different. It was very clean, professional, and you can truly tell they have the knowledge and experience to help. Since starting my care, I’ve noticed a big improvement, and it has helped me tremendously with my overall health and well being. I’m very happy with my experience and would definitely recommend this place to anyone looking for professional and personalized care.
Posted on Google Google
Adriana Guevara profile picture
Adriana Guevara
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
A very good experience—excellent service, clean, and comfortable. Highly recommended
Posted on Google Google
Kelvis Fernandez profile picture
Kelvis Fernandez
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great experience and highly recommend. The staff is great and knowledgeable.
Posted on Google Google
Diana Cardenas profile picture
Diana Cardenas
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Meeting Mariana and Tiffany truly changed my life. For years, I thought it was completely normal to only have one bowel movement a week. I had lived that way for so long that I never realized something was wrong. Everything changed when I met them. I completed four colon hydrotherapy sessions, and it was one of the best decisions I've ever made. Because my colon was finally clean, I also had to start eating better, and with their guidance I completely changed my relationship with food. They didn't just provide a treatment—they educated me, supported me, and genuinely cared about my health. What impressed me the most was the level of care they provided. They checked in on me regularly, called to see how I was feeling, answered every question, and recommended the supplements my body truly needed. I never felt like just another client. I felt cared for every step of the way. The changes have been incredible. Yes, my body changed, but that's only a small part of it. I sleep deeply and actually wake up feeling rested. I have more energy, my mood has improved, my mind feels clearer, and I can focus so much better throughout the day. I'm beyond grateful to Mariana and Tiffany. They didn't just help improve my digestive health—they helped me improve my quality of life. Thank you both for your dedication, your knowledge, and for truly caring about every person who walks through your doors. I can't recommend you enough.
Posted on Google Google
Maggie Colon profile picture
Maggie Colon
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
I cannot say enough wonderful things about Mariana and Tiffany at Natural Care Holistic Health Center. Over the past several months, I have received multiple treatments, including colon hydrotherapy, and the experience has been exceptional every single time. From the moment you walk through the door, you are treated with kindness, professionalism, and genuine care. Mariana and Tiffany take the time to listen, answer questions, and make sure you feel comfortable throughout the entire process. Their knowledge and passion for holistic wellness are evident in everything they do. Colon hydrotherapy can feel intimidating for first-timers, but they create such a welcoming and supportive environment that any concerns quickly disappear. They explain each step thoroughly and prioritize your comfort and dignity at all times. Beyond the treatments themselves, what truly sets them apart is their commitment to helping clients improve their overall health and well-being. They provide guidance, education, and encouragement that extends far beyond the appointment. If you are looking for compassionate, knowledgeable practitioners who genuinely care about your health journey, I highly recommend Mariana and Tiffany at Natural Care Holistic Health Center. Their expertise and dedication have made a significant positive impact on my health, and I am grateful to have found them. Ann-Margaret Gutierrez
Posted on Google Google
Sabrina Emmolo profile picture
Sabrina Emmolo
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Had my second colonic and I'm feeling so much better! Never had a colonic in my life before but Marianna has helped me so much already. Looking forward to more sessions to continue to help me on my path of gut healing.
Posted on Google Google
Joshua Otero profile picture
Joshua Otero
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great Place love the staff very informative and helpful

10% Off for First-Time Clients!

Enjoy 10% Off Your First Visit!
Note: Discount does not apply to packages.

Practitioner-Recommended Supplements

Patients can conveniently access practitioner-recommended professional-grade supplements through our Fullscript dispensary.