Medical nutrition therapy is a medical treatment. Like other non-physician practitioners providing medical treatments, registered dietitian nutritionists generally can practice MNT because of licensure and certification laws, which provide authority for RDNs to provide this medical service. It is with this understanding that the Academy strongly recommends — unless there is an applicable exception or exemption or a state does not provide for licensure or certification requirements — practitioners hold licensure or certification in all states where the practitioner's clients or patients are located when services are provided.
Links to State Boards, Statutes and Regulations
Statute and Regulation Details
Licensure (Or Certification) by Endorsement of RDN Credential/Exemptions
Sec. 08.38.020. Dietitian licensure
The department shall issue a dietitian license to an individual who pays the required fee, applies on a form provided by the department, and submits evidence satisfactory to the department of being certified as a Registered Dietitian by the Commission on Dietetic Registration
Licensure (or Certification) by Reciprocity or Endorsement of Another License
Sec. 08.38.050. Licensure by credentials
The department may issue a license to an applicant who holds a current unrestricted license as a dietitian or nutritionist in another state or political jurisdiction of the United States or Canada if, in the judgment of the department, the standards for licensure in the other jurisdiction are not less stringent than the requirements in this chapter.
Temporary/Provisional Licensure (or Certification)
Sec. 08.38.080. Exemption.
The requirements of this chapter do not apply to (1) an animal nutritionist whose activities are limited to the nutritional care of animals; animal nutritionists may use the title "nutritionist" as long as they provide nutrition services only to animals; (2) a person who is serving as an employee of the federal government whose job title includes the term "dietitian" or "nutritionist"; or (3) a person who is serving as a dietitian or nutritionist in the armed forces of the United States, but the exemption provided under this paragraph does not authorize the person to use the title "dietitian," "licensed dietitian," "nutritionist," "licensed nutritionist," or an occupational title using the word "dietitian" or "nutritionist" outside the scope of the person's military service.
Updated August 2023
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