Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mallory Cottam
Physical Therapist in Watertown, MA · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1093437675
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Registry record
Entity type Individual (Type 1)
Name Mallory Cottam
Sex Female
Practice address 51 Water St, Watertown, MA, 02472
Phone (617) 744-8300
Enumeration date Sep 12, 2022
Last updated in NPPES Sep 12, 2022
Taxonomy & licenses
225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 26436 (MA) 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 Mallory Cottam 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 Mallory Cottam?
The National Provider Identifier (NPI) for Mallory Cottam is 1093437675, 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 2022-09-12.