Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John David Karabasz, DMD

Prosthodontics in Allentown, PA · enumerated 2005.

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

National Provider Identifier

1821091570

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Registry record

Entity type Individual (Type 1)

Name John David Karabasz

Credential DMD

Sex Male

Practice address 1251 S Cedar Crest Blvd, Ste 306, Allentown, PA, 18103

Phone (610) 770-0210

Fax (610) 770-9876

Enumeration date May 24, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223P0700X Prosthodontics Dental Providers · License DS019478L (PA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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

What is the NPI number for John Karabasz?

The National Provider Identifier (NPI) for John Karabasz is 1821091570, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Karabasz practice?

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

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