Dr. Stephen James Tomaszewski, DDS

Dr. Stephen James Tomaszewski is a Dentist provider (Dentist) practicing in Slidell, LA, registered in the NPPES registry with NPI 1528021128 since 2006. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum

NPI	1528021128
Entity type	Individual (Type 1)
Name	Dr. Stephen James Tomaszewski
Credential	DDS
Sex	Male
Practice address	1275 7TH ST, Slidell, LA, 70458
Phone	9856414444
Enumeration date	2006-04-06
Last updated in NPPES	2016-02-01

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
122300000X	Dentist	Primary	5589	LA

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: Stephen Tomaszewski, DDS
NPI: 1528021128
Taxonomy: 122300000X (Dentist)
Address: 1275 7TH ST, Slidell, LA, 70458

Verify this record

Cross-check NPI 1528021128 against the authoritative CMS record: view Dr. Stephen James Tomaszewski on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

What specialty is Stephen Tomaszewski?

Stephen Tomaszewski is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-02-01.