Chinese term
Canada
PhD technical & engineering translator
Native in: Chinese (Variants: Traditional, Simplified) 
Works in: English to Chinese, Chinese to English
一，二，三级医院
Proposed translations
China
#1 EN/CN translator on PPH.com
Native in: Chinese 
, English
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Primary/Secondary/Tertiary Hospital
primary, secondary, tertiary hospital
Secondary 2级
Tertiary 3级
China
English-Simplified Chinese translator
Native in: Chinese (Variants: Taiwanese, Traditional, Simplified)
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Primary, Secondary and Tertiary Hospital
We conducted a retrospective study of adenovirus-infected children treated as inpatients in the National Taiwan University Hospital (NTUH), a tertiary hospital in northern Taiwan.
China
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Native in: Chinese
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Tier 1 to 3 hospitals
United States
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Native in: Chinese (Variant: Mandarin) , English (Variant: US)
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first-tier, second-tier, and third-tier hospitals
first tier是名词词组
first-tier是形容词词组
其实也可以写first-, second-, and third-tier hospitals, 为工整起见，还是全拼为好。
Primary care, Secondary care, Tertiary care hospital
Primary care, Secondary care, Tertiary care hospital
Primary, Secondary, Tertiary, and Quaternary Care
https://www.verywellhealth.com › ... › Patient Rights › Healthcare Team
Sep 27, 2019 - Medical professionals frequently talk about levels of care. They're divided into the categories of primary care, secondary care, tertiary care, and ...
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Note added at 4 hrs (2019-11-01 01:12:10 GMT)
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adding "care" is very important, 否则会被读者认为这些词是用来区分质量高下的定语，实际上不是这样的。三个类型的医院对应不同的病人群体，从需要Primary care, Secondary care 到 Tertiary care。
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Note added at 3 days 3 hrs (2019-11-04 00:23:03 GMT)
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Referral from secondary care and to aftercare in a tertiary care ...
https://www.ncbi.nlm.nih.gov › pubmed - 翻译此页
作者：S Toyabe - 2006 - 被引用次数：10 - 相关文章
2006年2月17日 - GIS analysis for the inpatients service area showed the hospital functions as both a secondary care hospital and tertiary care hospital. Patients ...
Discussion
当然如果要复杂一些的话一二三级分别就是Primary, Secondary and Tertiary了