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

Dr. Mark Stephen Spierer, DDS

General Practice Dentistry in Kearny, NJ · enumerated 2007.

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

National Provider Identifier

1417014747

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark Stephen Spierer
Credential DDS
Sex Male
Practice address Kearny, NJ, 07032
Phone (201) 991-2856
Fax (201) 991-2856
Enumeration date Jan 3, 2007
Last updated in NPPES Jul 9, 2007

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

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 11958 (NJ) 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
0270709 Medicaid NJ -
1020291 Medicaid NJ -

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 Mark Spierer practice?
The practice location on file with NPPES is in Kearny, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Spierer?
The National Provider Identifier (NPI) for Mark Spierer is 1417014747, a Type 1 (individual) record in the CMS NPPES registry.

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