Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
David Fillio, LCSW, MS
Social Worker in Tewksbury, MA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1699396762
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name David Fillio
Credential LCSW, MS
Sex Male
Practice address 365 East St Bldg 34, Tewksbury, MA, 01876
Phone (978) 459-3371
Enumeration date Apr 30, 2020
Last updated in NPPES Apr 30, 2020
Taxonomy & licenses
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy.
About the LCSW credential
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for David Fillio?
The National Provider Identifier (NPI) for David Fillio is 1699396762, a Type 1 (individual) record in the CMS NPPES registry.
Where does David Fillio practice?
The practice location on file with NPPES is in Tewksbury, MA. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-30.