NPI Portal NPI Lookup & Verification

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

Dr. Malcolm Robert Greenberg, D.D.S.

Dentist in Saginaw, MI · enumerated 2006.

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

National Provider Identifier

1447358148

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Registry record

Entity type Individual (Type 1)
Name Dr. Malcolm Robert Greenberg
Credential D.D.S.
Sex Male
Practice address Saginaw, MI, 48603
Phone (989) 793-1868
Enumeration date Sep 20, 2006
Last updated in NPPES Jul 9, 2007

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

Taxonomy & licenses

122300000X Dentist Dental Providers · License 2901011949 (MI) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Other identifiers

Identifier Type State Issuer
4046714 Medicaid MI -

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

How do I verify Malcolm Greenberg's NPI record?
Cross-check NPI 1447358148 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1447358148 active?
Yes, as of the latest NPPES snapshot, NPI 1447358148 is active (record last updated 2007-07-09).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.