Dr. Mark A Wisniewski, DDS

Dr. Mark A Wisniewski is a General Practice Dentistry provider (Dentist) practicing in Greenfield, MA, registered in the NPPES registry with NPI 1831107705 since 2006. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum

NPI	1831107705
Entity type	Individual (Type 1)
Name	Dr. Mark A Wisniewski
Credential	DDS
Sex	Male
Practice address	78 COUNTRY CLUB RD, Greenfield, MA, 01301
Phone	4137745591
Fax	4137726768
Enumeration date	2006-08-04
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	16697	MA

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

Copy-ready billing details

Provider: Mark Wisniewski, DDS
NPI: 1831107705
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 78 COUNTRY CLUB RD, Greenfield, MA, 01301

Verify this record

Cross-check NPI 1831107705 against the authoritative CMS record: view Dr. Mark A Wisniewski on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

Where does Mark Wisniewski practice?

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

What is the NPI number for Mark Wisniewski?

The National Provider Identifier (NPI) for Mark Wisniewski is 1831107705, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.