Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Isabel Marchand, LMSW
Social Worker in Westport, CT · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639023435
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Registry record
Entity type Individual (Type 1)
Name Isabel Marchand
Credential LMSW
Sex Female
Practice address 1698 Post Rd E Ste 1a, Westport, CT, 06880
Phone (203) 828-0868
Enumeration date Feb 26, 2026
Last updated in NPPES Feb 26, 2026
Taxonomy & licenses
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 Isabel Marchand practice?
The practice location on file with NPPES is in Westport, CT. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Isabel Marchand?
The National Provider Identifier (NPI) for Isabel Marchand is 1639023435, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-02-26.