Medical, USCIS and court interpreting for Teochew-speaking elders across the US, assigned as Teochew and never as generic Chinese, plus certified translation of the notarial records behind each case.
Prism Linguistics provides Chaochow (Teochew) interpreters for medical appointments, USCIS naturalization interviews, guardianship and probate hearings and depositions anywhere in the United States, in person, by phone or by video, matched as Teochew rather than Mandarin or Cantonese, together with certified English translation of Chinese notarial certificates and the Khmer or Vietnamese records that often sit alongside them.
Last reviewed September 2, 2026 by Sarah J, Prism Linguistics
Chaochow is the older English spelling of Teochew, the Southern Min language of the Chaoshan coast of eastern Guangdong, and we list it under both names because bookings arrive under both. What we will not do is send a Mandarin or Cantonese interpreter to a Teochew speaker and call the job done. Our office is in New York; our Chaochow interpreters work nationwide, in person where one is based near you and by phone or video everywhere else.
Teochew is not mutually intelligible with Mandarin or Cantonese and only partly with Hokkien, and it carries eight tones. The people who still use it as a first language in the United States are almost all elderly, because their children moved on to Cantonese, Mandarin, Vietnamese or English a generation ago. Many arrived not from China but from Cambodia, Vietnam and Thailand in the refugee years after 1975, which is why Teochew associations sit in Los Angeles Chinatown, Boston and Seattle as much as in New York.
Chinese is not a language for booking purposes. A request marked Chinese gets a Mandarin interpreter by default, and for a Teochew grandmother that means a hearing in which she nods and follows very little. We ask what the family speaks at home, and if the answer is Teochew, Chiu Chow, Chaozhou or Swatow, all names for the same thing, we assign a Chaochow interpreter.
Hospital work is the bulk of it: an elderly patient from a Chaoshan or Cambodian-Chinese family at a consultation, a discharge planning meeting or a psychiatric evaluation. A provider that takes federal funds must supply the interpreter at no cost, and a grandson who speaks Cantonese to his grandmother's Teochew is not a substitute, however willing. Video is the workable default for a language with so few interpreters in any one city; we send someone in person for a hospice conversation or a capacity assessment.
Naturalization interviews under the age-based English exemption, where an applicant over fifty who has held a green card long enough may test in their own language, are the main USCIS demand. The applicant brings the interpreter, and the officer expects that interpreter to be fluent in the applicant's actual language. A Cantonese speaker will not pass that test with a Teochew applicant. Our Chaochow interpreters render the civics questions and the answers as given and do not prompt.
Guardianship and probate for an elderly relative, a deposition in a family business dispute, a witness in a case that touches a Chaoshan-run restaurant or wholesaler: this is where Chaochow reaches a courtroom. No state runs a certification exam in Teochew, so the court uses a qualified interpreter, and Prism is often the call after the court's own list has failed. Prism is a private agency and not a court-appointed vendor.
Written Chinese is one script, so a Chaochow translation for USCIS is on its face a Chinese to English job: a notarial certificate of birth, marriage or no criminal record from a local Notary Public Office, with the household register behind it, and for anyone born before 1996 a birth certificate the notary reconstructed from that register rather than from a hospital. The Teochew layer is the name. A family that passed through Cambodia, Vietnam or Hong Kong often holds records where the surname was romanized from the Teochew pronunciation, so that Tan, Lim and Ng on an old document become Chen, Lin and Wu in pinyin on the passport. A translator who does not know that treats them as different people. We translate the whole file, Khmer and Vietnamese pages included, spell to the passport and note each variant, with a signed Certificate of Translation Accuracy. Details at certified translation.
Tell us the date, the city and the setting, or send a clear scan of the document. We reply with a fixed price and, for interpreting, a named linguist. Call +1 (833) 282 8883, email info@prismlinguistics.com, or use the quote form and you will hear back within 60 minutes during business hours.
Our only office is in New York, and our Chaochow interpreters work nationwide. For in-person work we assign someone based in or near the city. These are the areas where Chaochow work is concentrated; the full list of 288 cities is below it.
Prism Linguistics is rated 4.6 out of 5 across 67 client reviews for its interpreting and translation work in the United States. That is the company-wide figure; we do not publish a separate rating per language because there is no honest way to measure one. If a Chaochow assignment ever falls short, tell us and we put it right.