Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexander Davidson, MD

Pediatric Cardiology Physician in Philadelphia, PA · enumerated 2005.

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

National Provider Identifier

1235127119

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Registry record

Entity type Individual (Type 1)

Name Alexander Davidson

Credential MD

Sex Male

Practice address 3401 Civic Center Blvd, Children'S Hospital of Philadelphia - Cardiology, Philadelphia, PA, 19104

Phone (215) 590-4040

Fax (267) 426-9800

Enumeration date Oct 13, 2005

Last updated in NPPES Apr 16, 2013

Taxonomy & licenses

2080P0202X Pediatric Cardiology Physician Allopathic & Osteopathic Physicians · License MD042598E (PA) Primary

2080P0202X Pediatric Cardiology Physician Allopathic & Osteopathic Physicians · License 25MA05237400 (NJ) Secondary

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

Other identifiers

Identifier	Type	State	Issuer
001154997	Medicaid	PA	-

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Alexander Davidson?

Alexander Davidson is registered in NPPES with the primary taxonomy of Pediatric Cardiology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-16.