Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alexander Konstan, DDS
Dentist in Sunbury, OH · enumerated 2026.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1457289431
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Registry record
Entity type Individual (Type 1)
Name Alexander Konstan
Credential DDS
Sex Male
Practice address 257 W Granville St, Sunbury, OH, 43074
Phone (740) 480-2015
Enumeration date May 11, 2026
Last updated in NPPES May 11, 2026
Taxonomy & licenses
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.
Frequently asked questions
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.
What specialty is Alexander Konstan?
Alexander Konstan 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.
Other providers at this practice address
Browse all → Anthony Dental Care Dentist · Sunbury, OH NPI 1669525069 Sunbury Family Eyecare, LLC Health Service Clinic/Center · Sunbury, OH NPI 1205157393 Dental Specialists of Central Ohio Dentist · Sunbury, OH NPI 1013441872 Addison Stern General Practice Dentistry · Sunbury, OH NPI 1477392041 Paxton Stern Dentist · Sunbury, OH NPI 1871383281 Mark Rettstatt Dentist · Sunbury, OH NPI 1982532933
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-11.