Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sara Mannix, NP
Nurse Practitioner in Watertown, MA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1578616843
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Registry record
Entity type Individual (Type 1)
Name Sara Mannix
Credential NP
Sex Female
Practice address 485 Arsenal St, Watertown, MA, 02472
Phone (617) 972-5100
Enumeration date Jan 19, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 119157 (MA) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority.
About the NP credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 0373991 | Medicaid | MA | - |
| N348 | Other | MA | HPHC |
| NP1809 | Other | MA | BCBS |
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 Sara Mannix 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 Sara Mannix?
The National Provider Identifier (NPI) for Sara Mannix is 1578616843, 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 2007-07-08.