Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Deborah Marie Johnstone, RDH

Dental Hygienist in Worcester, MA · enumerated 2012.

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

National Provider Identifier

1174869036

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Registry record

Entity type Individual (Type 1)

Name Deborah Marie Johnstone

Credential RDH

Sex Female

Practice address 26 Queen St, Worcester, MA, 01610

Phone (508) 860-7975

Enumeration date Dec 21, 2012

Last updated in NPPES Dec 21, 2012

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License DH10172 (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.

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Frequently asked questions

What is the NPI number for Deborah Johnstone?

The National Provider Identifier (NPI) for Deborah Johnstone is 1174869036, a Type 1 (individual) record in the CMS NPPES registry.

Where does Deborah Johnstone practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-21.