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

Dr. Mark R Grenadier, DDS

Oral and Maxillofacial Surgery (Dentist) in Pittsburgh, PA · enumerated 2005.

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

National Provider Identifier

1932181831

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark R Grenadier

Credential DDS

Sex Male

Practice address Pittsburgh, PA, 15205

Phone (412) 788-9333

Fax (412) 788-9341

Enumeration date Nov 16, 2005

Last updated in NPPES Aug 2, 2010

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 DS025828L (PA) 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.

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Frequently asked questions

Where does Mark Grenadier practice?

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

What is the NPI number for Mark Grenadier?

The National Provider Identifier (NPI) for Mark Grenadier is 1932181831, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-08-02.