Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Meghan Callahan
Social Worker in Watertown, MA · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1548024219
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Registry record
Entity type Individual (Type 1)
Name Meghan Callahan
Sex Female
Practice address 917 Belmont St, Watertown, MA, 02472
Phone (617) 993-5164
Enumeration date Feb 12, 2024
Last updated in NPPES Feb 12, 2024
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 Meghan Callahan practice?
The practice location on file with NPPES is in Watertown, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Meghan Callahan?
The National Provider Identifier (NPI) for Meghan Callahan is 1548024219, 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 2024-02-12.