NPI Portal NPI Lookup & Verification

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

Dr. Thomas Edward Zajac, D.M.D.

General Practice Dentistry in Altoona, PA · enumerated 2007.

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

National Provider Identifier

1174667513

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Edward Zajac
Credential D.M.D.
Sex Male
Practice address Altoona, PA, 16601
Phone (814) 943-6550
Fax (814) 943-6550
Enumeration date Feb 19, 2007
Last updated in NPPES Mar 7, 2023

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License DS-022537-L (PA) Primary
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Other identifiers

Identifier Type State Issuer
415051 Other PA UNITED CONCORDIA
0018889660001 Medicaid PA -
14914 Other PA DORAL DENTAL
DS-022537-L Other PA STATE LICENSE NUMBER

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

Where does Thomas Zajac practice?
The practice location on file with NPPES is in Altoona, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Thomas Zajac?
The National Provider Identifier (NPI) for Thomas Zajac is 1174667513, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.