Caitlyn Castiglione, RD, Babylon, NY | Dietitian

About Caitlyn Castiglione

Caitlyn offers personalized, evidence-based nutrition advice, combined with a well-rounded clinical background. She completed three years of nursing training before deciding to focus exclusively on nutrition and earned both her Bachelor’s and Master’s degrees in nutrition from Long Island University. Her personal experience with recurrent SIBO prompted her to actively seek solutions through a combination of self-directed learning and evidence-based research. In the process, she developed a passion for nutrition and its vital role in preventing and managing chronic disease. Her firsthand experience gave her insight into how deeply gut health and nutrition can impact the entire body—an understanding that continues to shape the way she cares for her patients today. Counseling Style: Caitlyn approaches care with the belief that patients are the true experts on their own bodies. She takes a holistic approach that looks beyond just the food on their plate. Caitlyn works collaboratively to create a space where patients feel understood and empowered to make informed choices and develop strategies that fit their lives. She leverages her expertise to help patients make sense of their body’s signals and feel confident in caring for themselves. Hobbies/Interests: Outside of work, Caitlyn enjoys reading, staying active, and developing new recipes in the kitchen - often experimenting with ways to make nourishing foods both delicious and approachable.

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Popular visit reasons

Diabetes Education

Eating Disorder

HCG Weight Loss Program

New Patient Visit

Obesity / Weight Loss Consultation

Obesity Nutrition Consultation

Type 2 Diabetes

Weight Loss Consultation

Diabetes Education

Eating Disorder

HCG Weight Loss Program

New Patient Visit

Office location

Caitlyn Castiglione, RD also offers online video visits for patients

Functional Nutrition RX

41 John St, Babylon, NY 11702

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Education and background

Practice names

Functional Nutrition RX

Board certifications

Commission on Dietetic Registration
Registered Dietitian (RD) (Commission on Dietetic Registration)
Registered Dietitian Nutritionist (RDN) (Commission on Dietetic Registration)

Education and training

Long Island University Brooklyn, Master's in Nutrition and Dietetics
Long Island University Brooklyn (Bachelor's)

Languages spoken

English

Provider's gender

Female

NPI number

1568318160

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Frequently asked questions

How soon can I make an appointment with Caitlyn Castiglione?

Generally, Caitlyn Castiglione has appointments available on Zocdoc within 1 week. You can see Caitlyn Castiglione's earliest availability on Zocdoc and make an appointment online.

Is Caitlyn Castiglione accepting new patients?

Caitlyn Castiglione generally accepts new patients on Zocdoc. You can see Caitlyn Castiglione's earliest availability on Zocdoc and schedule an appointment online.

Does Caitlyn Castiglione accept my insurance?

Choose your insurance plan to verify if Caitlyn Castiglione is in-network.

Can I make an appointment with Caitlyn Castiglione online?

Yes, you can make an appointment online with Caitlyn Castiglione using Zocdoc. It’s simple, secure, and free.

What practice does Caitlyn Castiglione work with?

Caitlyn Castiglione works with Functional Nutrition RX.

Where is Caitlyn Castiglione's office located?

Caitlyn Castiglione has 11 office locations, including in Babylon, Batsto, Hartstown, Mashantucket, New Ashford, Maidstone, Smyrna, Markleeville, Timpas, and Millersburg, view full addresses on Caitlyn Castiglione's profile.

Which board certifications does Caitlyn Castiglione have?

Caitlyn Castiglione is certified by Commission on Dietetic Registration, Registered Dietitian (RD) (Commission on Dietetic Registration), and Registered Dietitian Nutritionist (RDN) (Commission on Dietetic Registration).

What are common reasons for patients to see Caitlyn Castiglione?

Caitlyn Castiglione frequently sees patients for Eating Disorder, New Patient Visit, Obesity / Weight Loss Consultation, Type 2 Diabetes, and Weight Loss Consultation. You can see other visit reasons for Caitlyn Castiglione on their profile.