Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Joann Lynn Chadwick, RDH

Dental Hygienist in Baltimore, MD · enumerated 2006.

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

National Provider Identifier

1730298738

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Registry record

Entity type Individual (Type 1)

Name Ms. Joann Lynn Chadwick

Credential RDH

Sex Female

Practice address 3715 Eastern Ave, Baltimore, MD, 21224

Phone (410) 327-5488

Enumeration date Aug 30, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 5442 (MD) 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

What is the NPI number for Joann Chadwick?

The National Provider Identifier (NPI) for Joann Chadwick is 1730298738, a Type 1 (individual) record in the CMS NPPES registry.

Where does Joann Chadwick practice?

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

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