Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Katherine R Tyros, DMD

Dentist in Chelmsford, MA · enumerated 2007.

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

National Provider Identifier

1457557399

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Registry record

Entity type Individual (Type 1)

Name Dr. Katherine R Tyros

Credential DMD

Sex Female

Practice address 18 North Rd, Chelmsford, MA, 01824

Phone (978) 256-2561

Fax (978) 256-5529

Enumeration date Jun 26, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License 19463 (MA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier	Type	State	Issuer
19463	Other	MA	LICENSE NUMBER

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 Katherine Tyros practice?

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

What is the NPI number for Katherine Tyros?

The National Provider Identifier (NPI) for Katherine Tyros is 1457557399, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.