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

Dr. Stephen Frederick Hartman, D.M.D.

General Practice Dentistry in Waterloo, NY · enumerated 2012.

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

National Provider Identifier

1164773735

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Registry record

Entity type Individual (Type 1)

Name Dr. Stephen Frederick Hartman

Credential D.M.D.

Sex Male

Practice address Waterloo, NY, 13165

Phone (315) 539-4035

Fax (315) 539-4035

Enumeration date Sep 24, 2012

Last updated in NPPES Sep 24, 2012

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License NY-033198 (NY) 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

Where does Stephen Hartman practice?

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

What is the NPI number for Stephen Hartman?

The National Provider Identifier (NPI) for Stephen Hartman is 1164773735, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-24.