Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary W Davis

Q: What is the NPI number for Mary Davis?

The National Provider Identifier (NPI) for Mary Davis is 1689735318, a Type 1 (individual) record in the CMS NPPES registry.

Professional Counselor in Newark, DE · enumerated 2006.

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

National Provider Identifier

1689735318

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Registry record

Entity type Individual (Type 1)

Name Mary W Davis

Sex Female

Practice address 254 E Main St, Newark, DE, 19711

Phone (610) 363-1488

Fax (610) 363-8273

Enumeration date Dec 13, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License PC-0000192 (DE) 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 Mary Davis?

The National Provider Identifier (NPI) for Mary Davis is 1689735318, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mary Davis practice?

The practice location on file with NPPES is in Newark, DE. 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 2007-07-08.