Dr. Mark Matthew Klepacki, DMD

Dr. Mark Matthew Klepacki is a General Practice Dentistry provider (Dentist) practicing in Hadley, MA, registered in the NPPES registry with NPI 1578635975 since 2006. The credential DMD stands for Doctor of Medicine in Dentistry.

✓ Active NPI ✓ Valid NPI checksum

NPI	1578635975
Entity type	Individual (Type 1)
Name	Dr. Mark Matthew Klepacki
Credential	DMD
Sex	Male
Practice address	190 RUSSELL ST, Hadley, MA, 01035
Phone	4135863306
Fax	4135868847
Enumeration date	2006-11-14
Last updated in NPPES	2007-07-08

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	14542	MA

DMD — Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD credential

Copy-ready billing details

Provider: Mark Klepacki, DMD
NPI: 1578635975
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: 190 RUSSELL ST, Hadley, MA, 01035

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1215120829	Piper Wilson	Individual	General Practice Dentistry	Hadley, MA
1659675023	Precision Dental Associates LLC	Organization	General Practice Dentistry	Hadley, MA
1548776032	Precision Dental Associates of Hadley LLC	Organization	General Practice Dentistry	Hadley, MA
1073468112	Pathways Tms LLC	Organization	Psychiatry Physician	Hadley, MA
1669327706	Pioneer Valley Psychiatry Pllc	Organization	Psychiatry Physician	Hadley, MA

Verify this record

Cross-check NPI 1578635975 against the authoritative CMS record: view Dr. Mark Matthew Klepacki 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 Klepacki practice?

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

What is the NPI number for Mark Klepacki?

The National Provider Identifier (NPI) for Mark Klepacki is 1578635975, 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.