Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Dawn Ann Schaefer

Specialist in Mahopac, NY · enumerated 2025.

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

National Provider Identifier

1538044342

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Registry record

Entity type Individual (Type 1)

Name Ms. Dawn Ann Schaefer

Sex Female

Practice address 141 E Lake Blvd Apt J2, Mahopac, NY, 10541

Phone (914) 629-6821

Fax (914) 629-6821

Enumeration date Aug 11, 2025

Last updated in NPPES Aug 11, 2025

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 221533031 (NY) 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 Dawn Ann Schaefer?

The National Provider Identifier (NPI) for Dawn Ann Schaefer is 1538044342, a Type 1 (individual) record in the CMS NPPES registry.

Where does Dawn Ann Schaefer practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-11.