NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. James Henry Stempien, DMD

Oral and Maxillofacial Surgery (Dentist) in Wellesley, MA · enumerated 2005.

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

National Provider Identifier

1417947151

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. James Henry Stempien
Credential DMD
Sex Male
Practice address 332 Washington St, Wellesley, MA, 02481
Phone (781) 237-0050
Fax (781) 235-6339
Enumeration date Oct 25, 2005
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 9053 (MA) 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

Is NPI 1417947151 active?
Yes, as of the latest NPPES snapshot, NPI 1417947151 is active (record last updated 2007-07-08).
How do I verify James Stempien's NPI record?
Cross-check NPI 1417947151 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

Browse all →

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