Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mark E Kalchthaler, DMD
Endodontics in Franklin, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1164518957
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Registry record
Entity type Individual (Type 1)
Name Dr. Mark E Kalchthaler
Credential DMD
Sex Male
Practice address 151 East Central Street, Franklin, MA, 02038
Phone (508) 520-8777
Fax (508) 520-0859
Enumeration date Oct 5, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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.
Frequently asked questions
Where does Mark Kalchthaler practice?
The practice location on file with NPPES is in Franklin, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Kalchthaler?
The National Provider Identifier (NPI) for Mark Kalchthaler is 1164518957, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.