Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Hannah Oconnor

Speech-Language Pathologist in Billerica, MA · enumerated 2022.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1841933603

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Registry record

Entity type Individual (Type 1)

Name Ms. Hannah Oconnor

Sex Female

Practice address 365 Boston Rd, Billerica, MA, 01821

Phone (978) 528-8596

Enumeration date Apr 19, 2022

Last updated in NPPES Apr 19, 2022

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Hannah Oconnor practice?

The practice location on file with NPPES is in Billerica, MA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Hannah Oconnor?

The National Provider Identifier (NPI) for Hannah Oconnor is 1841933603, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Town of Billerica Public Health or Welfare Agency · Billerica, MA NPI 1992803381 Town of Billerica Local Education Agency (LEA) · Billerica, MA NPI 1861522492 Town of Billerica Local Education Agency (LEA) · Billerica, MA NPI 1366781973

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-19.