How to Become a Licensed Dietitian in 2026: Complete State-by-State Guide

Becoming a licensed dietitian is one of the most rigorous pathways in allied health — and one of the most rewarding. Dietitians assess, diagnose, and treat nutritional problems across hospitals, clinics, private practice, and public health settings. But the road to licensure involves completing an accredited degree, passing a national credentialing exam, finishing hundreds of supervised practice hours, and navigating a patchwork of state regulations that varies significantly across the country.

Across the 51 states we track, 40 states require a full dietitian license, 6 use certification, 0 use registration, and 0 offer title protection only. A handful of states have no statewide regulation at all. 45 states require the CDR (Commission on Dietetic Registration) credential as part of their licensure process. Initial fees range from $200 to $500 depending on the state.

What Does a Licensed Dietitian Do?

Registered Dietitian Nutritionists (RDNs) are the primary nutrition experts in clinical, community, and research settings. Their work spans a wide range of services:

• Medical Nutrition Therapy (MNT): Assessment and treatment of disease-related nutritional conditions such as diabetes, kidney disease, eating disorders, and cancer.
• Nutritional counseling: Developing individualized meal plans, coaching behavior change, and supporting weight management.
• Clinical nutrition support: Enteral and parenteral nutrition management in hospital settings.
• Community and public health nutrition: Program development, food policy, WIC, and school nutrition.
• Food service management: Overseeing institutional foodservice operations in healthcare facilities.
• Research and education: Contributing to evidence-based nutrition guidelines and educating patients, students, and the public.

The scope of practice — particularly whether a dietitian can provide Medical Nutrition Therapy independently — varies by state. In states without strong regulation, unlicensed individuals may provide some nutrition advice, which is why state regulation matters for consumers and practitioners alike.

Step 1: Complete an ACEND-Accredited Education Program

The first step is completing the required academic coursework through an ACEND-accredited program. ACEND stands for the Accreditation Council for Education in Nutrition and Dietetics, which is the accrediting body of the Academy of Nutrition and Dietetics (AND).

When selecting a program, confirm it holds current ACEND accreditation. Graduating from a non-accredited program will disqualify you from sitting for the CDR exam, which is required in most states. You can verify accreditation status directly at eatrightpro.org/acend.

Step 2: Complete a Supervised Practice Program (Dietetic Internship)

After completing the academic requirements, you must complete an ACEND-accredited supervised practice program — typically called a Dietetic Internship (DI). This is the hands-on clinical component of your training.

• Minimum 1,000 supervised practice hours across clinical nutrition, food and nutrition management, and community nutrition rotations.
• Full-time programs typically run 6–12 months. Part-time options exist but may take longer.
• Integrated programs (ACEND-accredited Dietitian Nutritionist programs) combine the master's degree and internship into a single pathway, which has become increasingly common.
• Competitive placement: Dietetic internship spots have historically been competitive. The Academy of Nutrition and Dietetics computer matching system (D&D Digital) is used to match students with programs.
• Stipends vary widely — many internships are unpaid, though some hospital-based programs offer stipends.

Upon completing your supervised practice program, you will receive a verification statement confirming you have met all requirements to sit for the CDR exam.

Step 3: Pass the CDR Registration Examination

The Commission on Dietetic Registration (CDR) administers the Registration Examination for Dietitian Nutritionists — commonly called the RDN exam. Passing this exam earns you the RDN (Registered Dietitian Nutritionist) credential, which is the national standard for dietetic practice.

45 of 51 states require the CDR credential as part of their state licensure, certification, or registration process. After passing, CDR issues your RDN credential and assigns you a registration number. Most states then require you to apply separately to the state licensing board using your CDR credential as documentation.

Step 4: Obtain Your State Credential

After earning the RDN credential, you must obtain the appropriate state credential before practicing. Dietitian regulation varies significantly by state. There are four main regulatory models:

2 states currently have no statewide regulation for dietitians. In these states, anyone can call themselves a nutritionist or provide nutrition counseling without a credential, though the RDN credential from CDR remains the national professional standard.

To find the specific requirements for your state, including application forms, fees, and renewal timelines, select your state from the table below or visit the dietitian license directory.

Medical Nutrition Therapy (MNT) Authority by State

Medical Nutrition Therapy is the clinical application of nutrition to treat and manage diseases such as diabetes, chronic kidney disease, cardiovascular disease, and eating disorders. In many states, MNT is explicitly part of the authorized scope of practice for licensed dietitians. In others, the scope is less defined.

47 of 51 states in our data explicitly authorize Medical Nutrition Therapy within the dietitian scope of practice:

Medicare reimbursement for MNT services provided by RDNs is available under Medicare Part B for beneficiaries with diabetes or non-dialysis kidney disease, following the Medicare MNT benefit established through the Academy of Nutrition and Dietetics advocacy work. State authorization for MNT does not automatically determine insurance reimbursement, which is governed separately by payer contracts and CMS rules.

Dietitian Licensure Requirements by State

The table below summarizes key requirements across all states we track. Click a state name to view the full requirements page.

Continuing Education Requirements

Maintaining your dietitian credential requires ongoing continuing education (CE). There are two layers: CDR professional development requirements and state-specific CE mandates.

States by Regulation Type

Here is a breakdown of which states fall under each regulatory model. Click any state to see its full requirements.

Frequently Asked Questions

Sources

Requirements data is sourced from official state dietetic licensing boards, the Commission on Dietetic Registration, and the Accreditation Council for Education in Nutrition and Dietetics. The following authoritative sources were used in preparing this guide:

• Commission on Dietetic Registration (CDR) — cdrnet.org — RDN examination eligibility, credentialing requirements, and Professional Development Portfolio requirements.
• Accreditation Council for Education in Nutrition and Dietetics (ACEND) — eatrightpro.org/acend — Program accreditation standards, accredited program directory, and supervised practice requirements.
• Academy of Nutrition and Dietetics (AND) — eatright.org — Professional standards, scope of practice, Medical Nutrition Therapy policy, and dietetic internship matching.
• Individual state dietetic licensing boards and health professional regulatory agencies (cited on each state page).
• Centers for Medicare & Medicaid Services (CMS) — cms.gov — Medicare Medical Nutrition Therapy benefit coverage and billing requirements.

State requirement data was last verified in early 2026. Requirements change periodically — always confirm current requirements directly with your state's dietetic licensing board before applying.