"Non-English speaker", a person who cannot speak or understand, or has difficulty with speaking or understanding, the English language because the speaker primarily or only uses a spoken language other than English.
"Competent interpreter services", interpreter services performed by a person who is fluent in English and in the language of a non-English speaker, who is trained and proficient in the skill and ethics of interpreting and who is knowledgeable about the specialized terms and concepts that need to be interpreted for purposes of receiving emergency care or treatment.
Mass. Gen. Laws ch. 123, § 23A