{"npi":"1437376167","type":"NPI-1","status":"active","name":{"display":"Walter Matweychuk PHD","other":[],"first":"WALTER","last":"MATWEYCHUK","middle":"J.","credential":"PHD"},"specialty":{"primary_taxonomy":"103TB0200X","primary_taxonomy_description":"Cognitive & Behavioral Psychologist","slug":"cognitive-behavioral-psychologist","schema_org_specialty":null,"all":[{"code":"103TB0200X","description":"Cognitive & Behavioral Psychologist","primary":true,"state":"PA","license":"PS016399"}]},"addresses":[{"purpose":"LOCATION","street_1":"3535 MARKET ST","city":"PHILADELPHIA","state":"PA","postal_code":"191043309","country_code":"US","street_2":"3RD FLOOR","phone":"2157466700"},{"purpose":"MAILING","street_1":"3535 MARKET ST","city":"PHILADELPHIA","state":"PA","postal_code":"191043309","country_code":"US","street_2":"3RD FLOOR","phone":"2157466700"}],"license":{"state":"PA","number":"PS016399"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20150327001881","type_code":"14-68","type_desc":"PRACTITIONER - CLINICAL PSYCHOLOGIST","state":"PA","pac_id":"8224355441"}]},"enumeration_date":"2007-04-20","last_updated":"2016-06-01","_meta":{"source":"NPPES","snapshot_date":"2016-06-01","doc_url":"https://findmynpi.com/api"}}