{"npi":"1861640146","type":"NPI-1","status":"active","name":{"display":"Dr. Matthew Littlefield M.D.","other":[],"first":"MATTHEW","last":"LITTLEFIELD","credential":"M.D."},"specialty":{"primary_taxonomy":"2084P0800X","primary_taxonomy_description":"Psychiatry","slug":"psychiatry","schema_org_specialty":"Psychiatric","all":[{"code":"2084P0800X","description":"Psychiatry","primary":true,"state":"CA","license":"A114067"}]},"addresses":[{"purpose":"LOCATION","street_1":"2311 LOVERIDGE RD","city":"PITTSBURG","state":"CA","postal_code":"945655117","country_code":"US","street_2":"2ND FLOOR","phone":"9254312600"},{"purpose":"MAILING","street_1":"2977 YGNACIO VALLEY RD","city":"WALNUT CREEK","state":"CA","postal_code":"945983535","country_code":"US","street_2":"# 256","phone":"9254312626"}],"license":{"state":"CA","number":"A114067"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20121115000116","type_code":"14-26","type_desc":"PRACTITIONER - PSYCHIATRY","state":"CA","pac_id":"8224289558"}]},"enumeration_date":"2008-08-29","last_updated":"2022-02-11","_meta":{"source":"NPPES","snapshot_date":"2022-02-11","doc_url":"https://findmynpi.com/api"}}