{"npi":"1124654272","type":"NPI-1","status":"active","name":{"display":"Irvin Lien MD","other":[],"first":"IRVIN","last":"LIEN","middle":"CHI-YANG","credential":"MD"},"specialty":{"primary_taxonomy":"208M00000X","primary_taxonomy_description":"Hospitalist","slug":"hospitalist","schema_org_specialty":"Internal","all":[{"code":"208M00000X","description":"Hospitalist","primary":true,"state":"CA","license":"A180133"}]},"addresses":[{"purpose":"LOCATION","street_1":"1100 VETERANS BLVD","city":"REDWOOD CITY","state":"CA","postal_code":"940632037","country_code":"US","phone":"6502992000"},{"purpose":"MAILING","street_1":"170 GAMBIER ST","city":"SAN FRANCISCO","state":"CA","postal_code":"941341023","country_code":"US","phone":"2065796591"}],"license":{"state":"CA","number":"A180133"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20231205000053","type_code":"14-11","type_desc":"PRACTITIONER - INTERNAL MEDICINE","state":"CA","pac_id":"6507214343"}]},"enumeration_date":"2020-03-20","last_updated":"2023-07-02","_meta":{"source":"NPPES","snapshot_date":"2023-07-02","doc_url":"https://findmynpi.com/api"}}