Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephanie Annette Mackey, M.D.

Dermatology Physician in Lancaster, PA · enumerated 2005.

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

National Provider Identifier

1205834249

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Registry record

Entity type Individual (Type 1)

Name Stephanie Annette Mackey

Credential M.D.

Sex Female

Practice address 1027 Hunters Path, Lancaster, PA, 17601

Phone (717) 413-7721

Enumeration date Jul 13, 2005

Last updated in NPPES Mar 2, 2023

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License MD055612L (PA) Secondary

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD055612L (PA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Mackey practice?

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

What is the NPI number for Stephanie Mackey?

The National Provider Identifier (NPI) for Stephanie Mackey is 1205834249, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-02.