Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John P Tsonis, DC
Chiropractor in Mattapoisett, MA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1295849164
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Registry record
Entity type Individual (Type 1)
Name John P Tsonis
Credential DC
Sex Male
Practice address 109 Fairhaven Rd, Ste D, Mattapoisett, MA, 02739
Phone (508) 758-3666
Fax (508) 758-3289
Enumeration date Aug 18, 2006
Last updated in NPPES Oct 10, 2017
Taxonomy & licenses
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders.
About the DC credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| AA14829 | Other | - | HARVARD PILGRIM |
| Y36864 | Other | - | BCBS |
| 462347 | Other | - | TUFTS |
| 80038 | Other | - | CIGNA |
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 John Tsonis?
John Tsonis is registered in NPPES with the primary taxonomy of Chiropractor. 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 →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-10-10.