Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Stephanie Dianne Powell, RDH

Dental Hygienist in Washington, DC · enumerated 2009.

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

National Provider Identifier

1356574735

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Registry record

Entity type Individual (Type 1)

Name Ms. Stephanie Dianne Powell

Credential RDH

Sex Female

Practice address 1220 12th St Se, Suite #120, Washington, DC, 20003

Phone (202) 715-7901

Enumeration date Sep 1, 2009

Last updated in NPPES Nov 27, 2011

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License HYG1000098 (DC) Primary

124Q00000X Dental Hygienist Dental Providers · License 4956 (MD) Secondary

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 Stephanie Powell practice?

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

What is the NPI number for Stephanie Powell?

The National Provider Identifier (NPI) for Stephanie Powell is 1356574735, 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 2011-11-27.