Marie Antoine Mathieu, MSW
Marie Antoine Mathieu is a Social Worker provider (Social Worker) practicing in Silver Spring, MD, registered in the NPPES registry with NPI 1609051648 since 2008.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1609051648 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Marie Antoine Mathieu |
| Credential | MSW |
| Sex | Female |
| Practice address | 1398 LAMBERTON DR, Silver Spring, MD, 20902 |
| Phone | 3017541102 |
| Fax | 3017541690 |
| Enumeration date | 2008-01-09 |
| Last updated in NPPES | 2011-12-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 104100000X | Social Worker | Primary | 6801089744 | MI |
| 1041C0700X | Clinical Social Worker | Secondary | 16851 | MD |
Copy-ready billing details
Provider: Marie Mathieu, MSW NPI: 1609051648 Taxonomy: 104100000X (Social Worker) Address: 1398 LAMBERTON DR, Silver Spring, MD, 20902
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1255379947 | Threshold Services, Inc. | Organization | Mental Health Clinic/Center (Including Community Mental Health Center) | Silver Spring, MD |
| 1558446690 | Threshold Services, Inc. | Organization | Mental Health Counselor | Silver Spring, MD |
| 1003968439 | Tacie Dejanikus | Individual | Clinical Social Worker | Silver Spring, MD |
| 1740464940 | Rebecca Maguire | Individual | Clinical Social Worker | Silver Spring, MD |
| 1023271624 | Threshold Services | Organization | Community/Behavioral Health Agency | Silver Spring, MD |
| 1861766610 | Antonia Tsutsumi | Individual | Clinical Social Worker | Silver Spring, MD |
| 1174995781 | Cornerstone Montgomery, Inc. | Organization | Adult Mental Health Clinic/Center | Silver Spring, MD |
| 1619349529 | Cornerstone Montgomery, Inc. | Organization | Community/Behavioral Health Agency | Silver Spring, MD |
Verify this record
Cross-check NPI 1609051648 against the authoritative CMS record: view Marie Antoine Mathieu on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Where does Marie Mathieu practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2011-12-08.