{"npi":"1205575487","type":"NPI-1","status":"active","name":{"display":"Dr. Allison Tzeng MD","other":[],"first":"ALLISON","last":"TZENG","middle":"RO-YAO","credential":"MD"},"specialty":{"primary_taxonomy":"207R00000X","primary_taxonomy_description":"Internal Medicine","slug":"internal-medicine","schema_org_specialty":"Internal","all":[{"code":"207R00000X","description":"Internal Medicine","primary":false,"state":"PA","license":"MT226628"},{"code":"207R00000X","description":"Internal Medicine","primary":true,"state":"CA","license":"A203094"}]},"addresses":[{"purpose":"LOCATION","street_1":"521 PARNASSUS AVE","city":"SAN FRANCISCO","state":"CA","postal_code":"941432206","country_code":"US","phone":"4154761000"},{"purpose":"MAILING","street_1":"900 N 9TH ST APT 705","city":"PHILADELPHIA","state":"PA","postal_code":"191231230","country_code":"US"}],"license":{"state":"CA","number":"A203094"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20250623000164","type_code":"14-C6","type_desc":"PRACTITIONER - HOSPITALIST","state":"CA","pac_id":"7719365246"}]},"enumeration_date":"2022-06-03","last_updated":"2025-06-10","_meta":{"source":"NPPES","snapshot_date":"2025-06-10","doc_url":"https://findmynpi.com/api"}}