MEET YOUR

Dietitians

Founders, Gillian and Tammy Marino are smiling together standing in nature

Nutrition is rarely one-size-fits-all.

At Cellevel Nutrition, we specialize in a functional, root-cause approach to wellness. We founded this practice together with a shared belief that true health begins at the cellular level.

Tammy Marino, Smiling with a blazer jacket on

TAMMY BROOKS-MARINO

As a seasoned nutritionist with a unique blend of expertise in both functional and traditional nutrition, I am dedicated to helping individuals achieve optimal health through a holistic, science-based approach. Together we will explore the connection between diet, lifestyle, and overall wellness. I empower clients to make sustainable changes that improve their health, energy, and quality of life.

With formal training in Clinical Nutrition from New York University and a Certification from Integrative and Functional Nutrition, I use a comprehensive, personalized approach to nutrition that integrates functional nutrition principles. Focusing on the root causes of health issues like gut imbalances, inflammation, and hormonal disruptions — while also drawing on traditional nutrition strategies for balanced, everyday health support.

When not working with clients, I enjoy racing triathlons, golf, and cooking. I believe that true health is a balance of nourishing food, mindful living, and an understanding of how the body’s systems work together.

MS, RD, IFNCOT

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TAMMY BROOKS-MARINO

As a seasoned nutritionist with a unique blend of expertise in both functional and traditional nutrition, I am dedicated to helping individuals achieve optimal health through a holistic, science-based approach. Together we will explore the connection between diet, lifestyle, and overall wellness. I empower clients to make sustainable changes that improve their health, energy, and quality of life.

With formal training in Clinical Nutrition from New York University and a Certification from Integrative and Functional Nutrition, I use a comprehensive, personalized approach to nutrition that integrates functional nutrition principles. Focusing on the root causes of health issues like gut imbalances, inflammation, and hormonal disruptions — while also drawing on traditional nutrition strategies for balanced, everyday health support.

When not working with clients, I enjoy racing triathlons, golf, and cooking. I believe that true health is a balance of nourishing food, mindful living, and an understanding of how the body’s systems work together.

Gillian Marino, woman smiling with long brown hair and side bangs

GILLIAN MARINO

MS, RD

I’m Gillian Marino, and I founded this practice alongside my mother with a shared belief that true health begins at the cellular level.

As a Registered Dietitian with a background in both Culinary Nutrition and Clinical Dietetics, my approach is where the science of the lab meets the art of the kitchen. With a B.S. in Culinary Nutrition from Johnson & Wales and an M.S. from Hunter College, I specialize in bridging the gap between complex medical nutrition therapy and the simple joy of a well-cooked meal. I’ve spent my career clinicalizing the kitchen—merging professional culinary skills with rigorous nutritional science to help you eat for both health and enjoyment.

Whether we’re diving into functional lab work or navigating your weekly grocery run, my goal is to provide root-cause solutions that feel practical, sustainable, and—most importantly—human. We aren't just looking at charts; we're looking at your life.

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I’m Gillian Marino, and I founded this practice alongside my mother with a shared belief that true health begins at the cellular level.

As a Registered Dietitian with a background in both Culinary Nutrition and Clinical Dietetics, my approach is where the science of the lab meets the art of the kitchen. With a B.S. in Culinary Nutrition from Johnson & Wales and an M.S. from Hunter College, I specialize in bridging the gap between complex medical nutrition therapy and the simple joy of a well-cooked meal. I’ve spent my career clinicalizing the kitchen—merging professional culinary skills with rigorous nutritional science to help you eat for both health and enjoyment.

Whether we’re diving into functional lab work or navigating your weekly grocery run, my goal is to provide root-cause solutions that feel practical, sustainable, and—most importantly—human. We aren't just looking at charts; we're looking at your life.

THE Results SPEAK FOR THEMSELVES

  • “Tammy is incredibly knowledgeable with a deep passion for health and people. After just one session, I left feeling heard and empowered, not overwhelmed."

    — K.F.

  • "Gillian was awesome. She was a great listener and asked great questions. Her approach was very thoughtful and insightful. She was empathetic and understanding and made me feel at ease. I'm really looking forward to our future sessions."

    — C.L.

  • "Tammy is awesome! She is an encouraging dietitian who meets you where you are and builds from there. Very personable and knowledgeable about nutrition and exercise"

    — D.F.

  • "I wish I booked this visit with Gillian sooner. I feel a lot more prepared for my Marathon."

    — S.W.

  • "Tammy was equally professional and friendly. She asked great questions and listened attentively... she was very informed on variety of foods, ingredient lists, and info charts... I appreciate that she is an athlete and understands active women."

    — K.M.

  • " I feel so much better about all of this and with Gillian, truly feel like I'll make progress. I truly think I'll see the changes I want to see."

    — D.H.

CONTACT US

Interested in working together? Feel free to contact us with any questions about our programs or consultations!

We can’t wait to hear from you!