California Statutes

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

• Board/Agency Website: N/A
• Statute: Title Protection without Licensure or Certification - California law restricts the usage of specified titles to use by defined credentialed practitioners but does not require licensure or certification by the state. Under Section 2586 of Chapter 5.65 of Division 2 of the CA Business and Professions Code, a registered dietitian or other qualified nutritional professional may, "upon referral by a health care provider authorized to prescribe dietary treatments, provide nutritional and dietary counseling, conduct nutritional and dietary assessments, and develop and recommend nutritional and dietary treatments, including therapeutic diets, for individuals or groups of patients in licensed institutional facilities or in private office settings. The referral for medical nutrition therapy shall be accompanied by a written prescription signed by the health care provider detailing the patient’s diagnosis and including either a statement of the desired objective of dietary treatment or a diet order."
• Regulation: N/A

Statute and Regulation Details

Background info and terminology

Licensure (or Certification) by Endorsement of RDN Credential/Exemptions

N/A

Licensure (or Certification) by Reciprocity or Endorsement of Another License

N/A

Temporary/Provisional Licensure (or Certification)

N/A

Exceptions/Exemptions

ARTICLE 3. License Required and Exemptions

2068. This chapter shall not be construed to prohibit any person from providing nutritional advice or giving advice concerning proper nutrition. However, this section confers no authority to practice medicine or surgery or to undertake the prevention, treatment, or cure of disease, pain, injury, deformity, or physical or mental conditions or to state that any product might cure any disease, disorder, or condition in violation of any provision of law.

For purposes of this section the terms "providing nutritional advice or giving advice concerning proper nutrition" means the giving of information as to the use and role of food and food ingredients, including dietary supplements.

Any person in commercial practice providing nutritional advice or giving advice concerning proper nutrition shall post in an easily visible and prominent place the following statement in his or her place of business:

"NOTICE"

"State law allows any person to provide nutritional advice or give advice concerning proper nutrition—which is the giving of advice as to the role of food and food ingredients, including dietary supplements. This state law does NOT confer authority to practice medicine or to undertake the diagnosis, prevention, treatment, or cure of any disease, pain, deformity, injury, or physical or mental condition and specifically does not authorize any person other than one who is a licensed health practitioner to state that any product might cure any disease, disorder, or condition."

The notice required by this section shall not be smaller than 81/2 inches by 11 inches and shall be legibly printed with lettering no smaller than1/2 inch in length, except the lettering of the word "NOTICE" shall not be smaller than 1 inch in length.

Referral Required

Chapter 5.65. Dietitians 2586

(a) (1) Notwithstanding any other law, a registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585 may, upon referral by a health care provider authorized to prescribe dietary treatments, provide nutritional and dietary counseling, conduct nutritional and dietary assessments, and develop and recommend nutritional and dietary treatments, including therapeutic diets, for individuals or groups of patients in licensed institutional facilities or in private office settings. The referral for medical nutrition therapy shall be accompanied by a written prescription signed by the health care provider detailing the patient's diagnosis and including either a statement of the desired objective of dietary treatment or a diet order. The registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, may perform nutritional assessments and initiate nutritional interventions within the parameters of the prescribed diet order pursuant to a licensed health care facility’s approved nutrition screening policy and procedure. The registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, shall collaborate with a multidisciplinary team, which shall include the treating physician and the registered nurse, in developing the patient's nutrition care plan. Unless otherwise stated in the diet order by a patient's provider, the registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, may individualize the patient's nutritional or dietary treatment when necessary, by modifying the distribution, type, or quantity of food and nutrients within the parameters of the diet order. Any modification, and the rationale for the modification, shall be documented in the patient's record for review by the practitioner, or other licensed health care professional, who is legally authorized to prescribe and is responsible for the care of the patient. Nothing in this subdivision shall be construed to authorize a registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, to order or administer a central vein or peripheral vein nutrition.

(2) The services described in this subdivision may be termed "medical nutrition therapy."

(b) A registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, may accept or transmit verbal orders or electronically transmitted orders for medical nutrition therapy from the referring physician or the physician responsible for the care of the patient in a licensed health care facility.

(c) A registered dietitian, or other nutritional professional meeting the qualifications set forth in subdivision (e) of Section 2585, may order medical laboratory tests related to medical nutrition therapy services when approved by the referring physician or the physician responsible for the care of the patient and when, in the absence of the referring physician or physician responsible for the care of the patient at a patient visit, in a clinic where there is a registered nurse on duty, a registered nurse is notified that a medical laboratory test is being ordered and is afforded an opportunity to assess the patient.

Updated June 2025

Disclaimer: This page is not intended to constitute legal or career advice. All information, content and materials are for general informational purposes only and may not represent the most up-to-date legal or other information. This website contains links to other third-party websites, which are only for the convenience of the reader, user or browser. The Academy of Nutrition and Dietetics and its members do not recommend or endorse the contents of the third-party sites, nor does such information necessarily constitute a legally binding interpretation of state policy. The ultimate authority to interpret each state's requirements is the licensing board or agency of that state.