{"npi":"1245626449","type":"NPI-1","status":"active","name":{"display":"Joanna Mattis M.D.","other":[],"first":"JOANNA","last":"MATTIS","credential":"M.D."},"specialty":{"primary_taxonomy":"2084E0001X","primary_taxonomy_description":"Epilepsy","slug":"epilepsy","schema_org_specialty":"Neurologic","all":[{"code":"2084N0400X","description":"Neurology","primary":false,"state":"PA","license":"MD467512"},{"code":"2084N0400X","description":"Neurology","primary":false,"state":"MI","license":"4301506606"},{"code":"2084E0001X","description":"Epilepsy","primary":true,"state":"MI","license":"4301506606"}]},"addresses":[{"purpose":"LOCATION","street_1":"1500 E MEDICAL CENTER DR","city":"ANN ARBOR","state":"MI","postal_code":"481095000","country_code":"US","phone":"7349364000"},{"purpose":"MAILING","street_1":"3621 S STATE ST","city":"ANN ARBOR","state":"MI","postal_code":"481081633","country_code":"US","phone":"7346475299"}],"license":{"state":"MI","number":"4301506606"},"identifiers":[],"pecos":{"enrolled_at":"2026-05-09T10:41:39.028268+00:00","enrollments":[{"enrlmt_id":"I20190702000010","type_code":"14-13","type_desc":"PRACTITIONER - NEUROLOGY","state":"PA","pac_id":"2264766807"},{"enrlmt_id":"I20220622001731","type_code":"14-F6","type_desc":"PRACTITIONER - EPILEPTOLOGISTS","state":"MI","pac_id":"2264766807"}]},"enumeration_date":"2015-04-14","last_updated":"2024-12-30","_meta":{"source":"NPPES","snapshot_date":"2024-12-30","doc_url":"https://findmynpi.com/api"}}