Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David Neil Greenman, D.D.S.

Oral and Maxillofacial Surgery (Dentist) in South Norwalk, CT · enumerated 2006.

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

National Provider Identifier

1316915036

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Registry record

Entity type Individual (Type 1)

Name Dr. David Neil Greenman

Credential D.D.S.

Sex Male

Practice address 20 N Main St, South Norwalk, CT, 06854

Phone (203) 866-6658

Fax (203) 852-9942

Enumeration date Mar 9, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

1223S0112X Oral and Maxillofacial Surgery (Dentist) Dental Providers · License 6921 (CT) Primary

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

What is the NPI number for David Greenman?

The National Provider Identifier (NPI) for David Greenman is 1316915036, a Type 1 (individual) record in the CMS NPPES registry.

Where does David Greenman practice?

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

Other providers at this practice address

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