Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Clarissa Madison, MSW, LGSW
Social Worker in Crofton, MD · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1831939867
See something wrong? Report a correction
Registry record
Entity type Individual (Type 1)
Name Clarissa Madison
Credential MSW, LGSW
Sex Female
Practice address 2502 Vineyard Ln, Crofton, MD, 21114
Phone (301) 659-4659
Enumeration date May 28, 2024
Last updated in NPPES May 28, 2024
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License LG200002862 (DC) Primary
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
Where does Clarissa Madison practice?
The practice location on file with NPPES is in Crofton, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Clarissa Madison?
The National Provider Identifier (NPI) for Clarissa Madison is 1831939867, a Type 1 (individual) record in the CMS NPPES registry.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-28.