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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. David E Blum, O.D.

Optometrist in Huntingdon Valley, PA · enumerated 2007.

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

National Provider Identifier

1457530099

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Registry record

Entity type Individual (Type 1)
Name Dr. David E Blum
Credential O.D.
Sex Male
Practice address Huntingdon Valley, PA, 19006
Phone (215) 947-0707
Enumeration date Oct 31, 2007
Last updated in NPPES Oct 31, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OE004763L (PA) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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.

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Frequently asked questions

Where does David Blum practice?
The practice location on file with NPPES is in Huntingdon Valley, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for David Blum?
The National Provider Identifier (NPI) for David Blum is 1457530099, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-31.