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

Dr. Mary Helen Kreitzer, D.M.D.

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

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

National Provider Identifier

1457340861

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Helen Kreitzer

Credential D.M.D.

Sex Female

Practice address Longmeadow, MA, 01106

Phone (413) 567-9495

Fax (413) 565-2785

Enumeration date Oct 18, 2005

Last updated in NPPES Oct 25, 2011

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

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 14421 (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.

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Frequently asked questions

Where does Mary Kreitzer practice?

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

What is the NPI number for Mary Kreitzer?

The National Provider Identifier (NPI) for Mary Kreitzer is 1457340861, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-10-25.