Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Harrison John Mackenzie, D.M.D.
Dentist in Franklin, MA · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1215342860
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Registry record
Entity type Individual (Type 1)
Name Dr. Harrison John Mackenzie
Credential D.M.D.
Sex Male
Practice address 397 E Central St, Franklin, MA, 02038
Phone (508) 528-0610
Enumeration date Jun 23, 2014
Last updated in NPPES Jun 23, 2014
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
What specialty is Harrison Mackenzie?
Harrison Mackenzie is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Franklin Dental Associates LLC General Practice Dentistry · Franklin, MA NPI 1952319857 Rudolph Shorette General Practice Dentistry · Franklin, MA NPI 1639248602 Daniel Winkler General Practice Dentistry · Franklin, MA NPI 1174696637 James Commette Prosthodontics · Franklin, MA NPI 1649344557 Bi-County Collaborative Local Education Agency (LEA) · Franklin, MA NPI 1457593493 Kevin Duong Dentist · Franklin, MA NPI 1679837025 Emma Zent Dentist · Franklin, MA NPI 1114767142
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-06-23.