Court, hospital and USCIS interpreting across the US, with the honorific register a Korean elder expects, plus certified Korean document translation.
Prism Linguistics provides Korean interpreters for court hearings, depositions, medical appointments and USCIS interviews anywhere in the United States, in person, by phone or by video, and certified English translation of Korean family relation and basic certificates.
Last reviewed September 2, 2026 by Sarah J, Prism Linguistics
Most Korean speakers who came for work or study handle English well enough for the office. It is the appointments outside the office that bring them to us: a parent in an emergency room, a witness under cross-examination, a spouse at a green card interview, an elder who expects to be addressed with respect. Our office is in New York; our Korean interpreters work nationwide. For in-person work we send one based near you, and phone or video is usually available the same day.
The 2019 ACS put roughly 1.08 million Korean speakers in the US, about half of whom report speaking English less than very well, clustered around Los Angeles, the New York and New Jersey suburbs, Atlanta, the Bay Area and the Washington region. Korean gives interpreters fewer dialect problems than most languages: someone from Seoul, someone from Busan and someone from the provinces follow one another without trouble. The question that decides an assignment is register, not region.
Honorifics are not manners. They are grammar. Korean elders hear the absence of honorific speech as contempt, and a young interpreter who addresses a grandmother in the plain form can lose her cooperation in a deposition within minutes. Speakers who grew up in North Korea are a separate matter, with vocabulary that has drifted from the South, and we ask before assigning. Getting the register right is often the whole job.
Both California and New York run a full oral certification exam in Korean, and in the federal district court for the Central District of California, Korean is the second most requested language after Spanish. That volume is why so many courts want a certified Korean interpreter rather than a bilingual volunteer. Tell us the court and the case type and we assign the credential that bench expects, whether certified or registered. We take work from courts, attorneys and law firms; we are a private agency, not a court-appointed vendor.
A hospital that receives federal money must provide a Korean interpreter at no charge, and Korean elders whose English fades under the stress of illness are exactly the patients who need one. Video works for a consultation or a specialist review. We send someone in person for discharge planning, for a mental health assessment, or when an older patient does better facing a person than a screen. Here too register matters: an interpreter who drops the honorifics a grandmother expects starts the visit on the wrong foot.
Naturalization interviews, adjustment-of-status appointments and asylum interviews are the bulk of this work. A mother whose English carried her through the civics questions but not the officer's follow-up, a dependent spouse, a parent recounting a claim: each needs an interpreter who renders the answer as given and adds nothing. We brief for exactly that, and we do not put a bilingual relative in the chair, because the officer is listening for the applicant's own words.
South Korea scrapped the old hojeok household register in 2008 and replaced it with individual certificates drawn from a family relations registry kept by the Supreme Court of Korea. For an American immigration case the pair USCIS looks for is the detailed Basic Certificate (gibon jeungmyeongseo) and the detailed Family Relation Certificate (gajok gwangye jeungmyeongseo), filed together where other countries would send a birth certificate. Anything that happened before 2008, an adoption or a parent's earlier marriage, may also pull in the old hojeok deungbon, which is laid out quite differently. Romanization is the recurring snag. One surname is Lee, Yi, Rhee or I; another is Park or Bak, and a father and son can hold passports spelling the same name two ways, because Korea's Revised Romanization does not bind personal names. We take the spelling from the passport, print the hangul beside it, and where a relative's passport is not in hand we use Revised Romanization and say so on the translation. The full document service is 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 Korean interpreters work nationwide. For in-person work we assign someone based in or near the city. These are the areas where Korean 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 Korean assignment ever falls short, tell us and we put it right.