Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

David M Yen, M.D.

Specialist in Bethlehem, PA · enumerated 2006.

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

National Provider Identifier

1033174503

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Registry record

Entity type Individual (Type 1)

Name David M Yen

Credential M.D.

Sex Male

Practice address 3445 High Point Blvd, Suite 100, Bethlehem, PA, 18017

Phone (610) 866-5555

Fax (610) 866-2006

Enumeration date Apr 19, 2006

Last updated in NPPES Sep 7, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD009437E (PA) Secondary

174400000X Specialist Other Service Providers · License MD063801L (PA) Primary

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
001795974	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 David Yen?

David Yen is registered in NPPES with the primary taxonomy of Specialist. 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 2010-09-07.