Japanese medical interpreters
Real-time Japanese medical interpretation for healthcare teams, on phones, tablets, and computers.
460,300 people in the U.S. speak Japanese at home.
Source: U.S. Census Bureau, 2017-2021 American Community Survey 5-year estimates.
Darker states have more Japanese speakers; shading is logarithmic, relative to the state with the most speakers.
| State | Speakers |
|---|---|
| California | 136,000 |
| Hawaii | 38,210 |
| Washington | 26,990 |
| Oregon | 10,480 |
| Ohio | 10,110 |
| Nevada | 7,000 |
| Colorado | 6,443 |
| Utah | 5,567 |
| Indiana | 5,502 |
| Tennessee | 4,398 |
| Kentucky | 3,511 |
| South Carolina | 2,710 |
| Alabama | 2,411 |
| Idaho | 1,794 |
| Nebraska | 1,558 |
| Alaska | 1,488 |
| District of Columbia | 1,029 |
| West Virginia | 925 |
| Mississippi | 731 |
| North Dakota | 620 |
| Wyoming | 604 |
| Montana | 436 |
| Vermont | 372 |
The 10 states with the most Japanese speakers
State counts reflect the 15 most reported non-English languages in each state’s ACS table. States where Japanese falls outside the top 15 are shown without shading; the national total includes every state.
181,000
speakers of Japanese speak English less than “very well”: the federal threshold for needing language assistance.
39%
of Japanese speakers in the U.S. meet that limited-English definition.
136,000
people speak Japanese at home in California alone.
Source: U.S. Census Bureau, 2017-2021 American Community Survey 5-year estimates.
Meet Opalite.
Real-time AI medical interpretation in 150+ languages and dialects, connecting providers and patients in seconds.
- Works on the devices care teams already carry: phones, tablets, computers, and telehealth platforms
- Integrates with all EHRs
- Built for HIPAA-compliant healthcare
- SOC 2 Type II attested security controls
What to know when interpreting Japanese
Every language has grammar that an interpreter must handle correctly. These are the Japanese features that the fewest other languages in the world share, according to the World Atlas of Language Structures (WALS).
Japanese · Japanese · Eurasia
1.9%
of the world’s languages share this trait
Japanese has a rasping sound made at the very back of the throat, like the French “r”, so an interpreter must keep it distinct from an ordinary “r” or “h” in names.
3.4%
of the world’s languages share this trait
Japanese speakers avoid saying “you” at all and use a title, name or family term instead, so an interpreter must choose an address that fits the patient’s age and standing.
WALS 45A · Politeness Distinctions in Pronouns · Pronouns avoided for politeness
4%
of the world’s languages share this trait
Japanese lets an adjective stand in for a noun in several different ways, so an interpreter must supply the missing noun and turn “the red one” into “the red tablet”.
WALS 61A · Adjectives without Nouns · Marked by mixed or other strategies
How Japanese is structured
- Word ordersubject, object and verb
- SOV
- Adpositionsprepositions or postpositions
- Postpositions
- Adjectivebefore or after the noun
- Adjective-Noun
- Demonstrativethis and that, before or after
- Demonstrative-Noun
- Numeralnumber before or after the noun
- Numeral-Noun
- Genitivepossessor before or after
- Genitive-Noun
- Relative clausebefore or after the noun
- Relative clause-Noun
- Morphologyprefixing or suffixing
- Strongly suffixing
- Tonewhether pitch changes meaning
- Simple tone system
- Casesnumber of noun cases
- 8-9 cases
- Gendersnumber of noun genders
- Not coded
- Classifierscounting words for nouns
- Obligatory
Source: Dryer, Matthew S. & Haspelmath, Martin (eds.) 2013. WALS Online, Max Planck Institute for Evolutionary Anthropology, Leipzig. Japanese entry: wals.info JPN. Licensed under CC BY 4.0. Values are reproduced as WALS codes them; each links to its datapoint. The clinical readings are Opalite’s own inferences and are not part of WALS.
FAQs about Japanese medical interpreters
Three states hold 44% of the nation’s Japanese speakers, and Japanese ranks in the published top-15 language tables of 23 states.
Source: U.S. Census Bureau, 2017-2021 American Community Survey 5-year estimates.
Opalite uses the same underlying interpretation techniques for Japanese as it does for Spanish, Mandarin, and Cantonese. In Opalite’s published validation study, those three languages were evaluated in clinical conversations, with over 90% fewer errors than certified medical interpreters across the conversations studied.
States where Japanese is a top 15 non-English language
- Alabama
- Alaska
- California
- Colorado
- District of Columbia
- Hawaii
- Idaho
- Indiana
- Kentucky
- Mississippi
- Montana
- Nebraska
- Nevada
- North Dakota
- Ohio
- Oregon
- South Carolina
- Tennessee
- Utah
- Vermont
- Washington
- West Virginia
- Wyoming
Try Japanese medical interpretation.
See a live conversation interpreted. Ask about setup and pricing.


