Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Carol Laibson
Social Worker in Waltham, MA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1134602147
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Registry record
Entity type Individual (Type 1)
Name Carol Laibson
Sex Female
Practice address 1430 Main St, Waltham, MA, 02451
Phone (781) 693-5607
Enumeration date Sep 14, 2018
Last updated in NPPES Sep 14, 2018
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 Carol Laibson practice?
The practice location on file with NPPES is in Waltham, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Carol Laibson?
The National Provider Identifier (NPI) for Carol Laibson is 1134602147, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-14.