Do I need a license to provide medical nutrition therapy?

In states that restrict MNT or all dietetics, yes. Illinois, Montana and Nebraska restrict MNT to licensees, and Ohio and Florida restrict broader practice. Texas requires a license only to use the licensed dietitian title. Check the state where the client is located.

Can I give general nutrition advice without a license?

In many states, yes, within limits. Illinois allows general nonmedical nutrition information, wellness recommendations and health coaching that are not MNT, if you use no restricted title. Ohio restricts all dietetics practice, so check each state.

Is diabetes nutrition counseling medical nutrition therapy?

Under definitions like Illinois's, nutrition care for the treatment or management of a disease or medical condition is MNT. Diabetes counseling generally fits that description, so plan on needing the license where MNT is restricted.

Does Medicare require a license for MNT?

Yes, where the state provides one. Medicare requires licensure or certification as a dietitian or nutrition professional by the state where services are performed. Where a state provides neither, CDR recognition as an RD or meeting the degree and 900-hour requirements counts.

Medical Nutrition Therapy and Scope of Practice by State

Whether you need a license in a state depends less on the word "license" than on what the law restricts. The Commission on Dietetic Registration (CDR) describes the two main models in its February 2026 credentialing tip: "some states specify that only licensed practitioners may provide medical nutrition therapy (MNT), but general nutrition education can be provided by those without a state license or certification. While other states specify that only licensed practitioners may provide any type of nutrition and dietetics services."

A third group restricts only titles. A fourth issues no credential at all. For a dietitian serving clients in several states, sorting each state into the right group is the difference between a license you must have and one you merely might want.

What is medical nutrition therapy, legally?

Definitions vary, but Illinois's is a useful reference because it is detailed. "Medical nutrition therapy" means "nutrition care services provided for the treatment or management of a disease or medical condition," and includes interpreting anthropometric, biochemical, clinical and dietary data and recommending nutrient needs, including enteral and parenteral nutrition; food and nutrition counseling, including about prescription drug interactions; managing food service operations that serve therapeutic diets; and "medical weight control" (225 ILCS 30/10).

CDR's tip also explains why the line exists: licensure laws "allow dietitians to practice medical nutrition therapy, a carve out of the practice of medicine. Without such laws, RDs may not have legal authority to practice at their level of competence."

Which states restrict all dietetics practice?

Ohio

"No person shall practice, offer to practice, or hold self forth to practice dietetics unless the person has been licensed" (Ohio Rev. Code 4759.02(A)). Ohio's exemptions cover other licensed professionals, supervised students and graduates, federal and certain public employees doing nutrition education, food and supplement sellers, and approved weight control programs (4759.10). See Ohio dietitian licensing.

Florida

"No person may engage for remuneration in dietetics and nutrition practice or nutrition counseling or hold himself or herself out as a practitioner of dietetics and nutrition practice or nutrition counseling unless the person is licensed" (Fla. Stat. 468.504). Note "for remuneration" and "nutrition counseling": Florida's restriction reaches paid counseling, not just clinical MNT. Its exemptions include wellness advice by someone who uses no dietitian or nutritionist title and does not serve a person "under the direct care and supervision of a medical doctor for a disease or medical condition requiring nutrition intervention, not including obesity or weight loss" (468.505(1)(n)). See Florida dietitian licensing.

Which states restrict medical nutrition therapy specifically?

Illinois

"No person may provide, offer to provide, or attempt to provide medical nutrition therapy... unless the person is licensed" (225 ILCS 30/15(a)). Outside MNT, Illinois expressly allows "general nonmedical nutrition information, nutrition recommendations for prevention and wellness, health coaching, holistic and wellness education, guidance, motivation, behavior change management, nonmedical weight control," as long as the services are not MNT and the person does not claim to be qualified to provide MNT or use a restricted title (30/20(j)). The Act is scheduled for repeal on January 1, 2028; see the Illinois sunset.

Montana

"Only an individual licensed under this chapter or as permitted pursuant to 37-25-304 may provide medical nutrition therapy as part of the practice of dietetics or nutrition" (Mont. Code 37-25-309). The Academy of Nutrition and Dietetics' March 2026 telehealth table quotes a narrow Montana exemption for an out-of-state dietitian or nutritionist licensed or certified elsewhere to provide MNT by telehealth: in consultation with a Montana licensee who has a relationship with the patient, for an existing patient temporarily in Montana, or for short-term follow-up care. See Montana licensing.

Nebraska

Nebraska's Medical Nutrition Therapy Practice Act, as quoted on the Academy's state page (updated June 2025), says "no person shall practice medical nutrition therapy unless such person is licensed... or holds a Compact Privilege," and that MNT "shall be provided with the consultation of a physician," nurse practitioner or physician assistant (Neb. Rev. Stat. 38-1812). The compact reference is to the future: no state issues privileges yet. See Nebraska licensing.

Where is only the title protected?

Some states that issue a credential attach the protection to the title rather than to practice, so check the statute rather than assuming a license restricts practice. Texas is the clearest example. The Texas Department of Licensing and Regulation says "individuals are not required to hold a Texas dietitian license to practice dietetics in Texas in-person or via telehealth," but those who use "licensed dietitian" or "LD" must hold the license. Washington certifies dietitians and nutritionists and protects the titles "certified dietitian," "certified nutritionist," "C.D." and "C.N." (RCW 18.138.020). New York certifies the titles "Certified Dietitian," "Certified Nutritionist" and "Certified Dietitian-Nutritionist."

California, Colorado and Virginia do not provide for dietitian licensure or certification at all, according to the Academy's March 2026 telehealth table. California's Business and Professions Code section 2068, as quoted on the Academy's California page, says the chapter does not "prohibit any person from providing nutritional advice," but "confers no authority to practice medicine or surgery or to undertake the prevention, treatment, or cure of disease." Our post on states without dietitian licensure covers them.

Why does the line matter for a telehealth dietitian?

Because it decides which licenses are required for which clients. Take a dietitian counseling clients on type 2 diabetes management by video:

In Illinois, that is medical nutrition therapy, and a license is required. An Illinois application opens a six-month window for someone licensed elsewhere to provide MNT while it is pending (225 ILCS 30/15(b)).
In Ohio, any dietetics practice needs a license.
In Florida, paid nutrition counseling needs a license or, for out-of-state practitioners, Florida's telehealth registration. See Florida's telehealth registration.
In Texas, no license is required unless the dietitian uses the LD title.

The same general wellness coaching, with no disease focus and no protected title, might need nothing in Illinois and still need a license in Ohio. The Academy's best-practice guide for RDs working with telehealth nutrition companies says that when an RD is expected to deliver MNT, "practice is limited to jurisdictions where the RD has legal authority to deliver such services," which generally means licensure "in the state where the patient is located when the service is rendered, if such states provide for licensure or certification." Our post on the where-the-client-is rule explains that piece.

How does Medicare treat MNT across states?

Uniformly in one respect: for Part B MNT, the provider must be "licensed or certified as a dietitian or nutrition professional by the State in which the services are performed." In a state that does not provide for licensure or certification, CDR recognition as a registered dietitian, or meeting the degree and 900-hour supervised practice requirements, counts instead (42 CFR 410.134). Texas provides for licensure, so by the rule's terms Medicare MNT furnished there calls for the Texas license, even though Texas itself does not require one to practice. See Medicare MNT and licensure.

How should you sort your client states?

List where clients are located during sessions.
For each state, find the restriction: all dietetics, MNT only, titles only, or nothing.
Compare it with what you actually do. Disease-focused counseling is MNT under definitions like Illinois's. General wellness may not be.
Check titles separately. Even where practice is open, "dietitian" or "LD" may be restricted.
Check payers. Medicare and some other payers look to the state credential.
Look for exemptions and bridges, such as Illinois's six-month window or Montana's narrow telehealth exemption.

Can we sort your states for you?

Yes. Our Dietitian Licensing Readiness Review ($149) maps every state where you have clients by what it restricts, whether your services fall inside that restriction, and what credential or registration fits. When you are ready to license, our Multi-State Telehealth Package covers three states for $1,499 or five for $2,299, and single states start at $599 for endorsement. We prepare and track every application; you review and sign it, pay the board and submit it. Board fees are separate. See the state license index for each state's rule.