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

Dr. David Edward Twardzik, M.D.

Dermatology Physician in Quakertown, PA · enumerated 2006.

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

National Provider Identifier

1457422925

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Registry record

Entity type Individual (Type 1)

Name Dr. David Edward Twardzik

Credential M.D.

Sex Male

Practice address Quakertown, PA, 18951

Phone (215) 538-2500

Enumeration date Nov 13, 2006

Last updated in NPPES Jul 8, 2007

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

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License MD072426L (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
3322159	Other	-	AETNA
P00101133	Other	-	RAILROAD MEDICARE
2045164000	Other	PA	KEYSTONE 65
2045164000	Other	PA	KEYSTONE HEALTH PLAN EAST
1352207	Other	PA	PERSONAL CHOICE 65 PIN#
1541668	Other	PA	INDEPENDENCE BLUE CROSS
1352207	Other	-	AMERIHEALTH
1352207	Other	PA	PERSONAL CHOICE PIN#
50022691	Other	PA	CAPITAL BLUE CROSS PIN#
1541668	Other	PA	HIGHMARK BLUE SHIELD

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 NPI 1457422925 active?

Yes, as of the latest NPPES snapshot, NPI 1457422925 is active (record last updated 2007-07-08).

How do I verify David Twardzik's NPI record?

Cross-check NPI 1457422925 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.