NPI Portal NPI Lookup & Verification

Thomas S Sullivan, DC

Thomas S Sullivan is a Chiropractor provider (Chiropractor) practicing in Malden, MA, registered in the NPPES registry with NPI 1548379233 since 2006. The credential DC stands for Doctor of Chiropractic. Practices at Compass Chiropractic Services LLC (listed at the same practice address in NPPES).

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NPI 1548379233
Entity type Individual (Type 1)
Name Thomas S Sullivan
Credential DC
Sex Male
Practice address 481 FERRY ST, Malden, MA, 02148
Phone 7816050505
Fax 7816053458
Enumeration date 2006-08-29
Last updated in NPPES 2022-07-21

Taxonomy & licenses

Taxonomy code Specialty Primary License State
111N00000X Chiropractor Primary 385 MA

DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
720367 Other TUFTS
AA61550 Other HARVARD PHC
Y35231 Other BC/BS
11609670 Other CAQH
Copy-ready billing details
Provider: Thomas Sullivan, DC
NPI: 1548379233
Taxonomy: 111N00000X (Chiropractor)
Address: 481 FERRY ST, Malden, MA, 02148

Other providers at this practice address

NPI Name Type Specialty Location
1528544624 Compass Chiropractic Services LLC Organization Chiropractor Malden, MA

Verify this record

Cross-check NPI 1548379233 against the authoritative CMS record: view Thomas S Sullivan 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

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 Thomas Sullivan?
Thomas Sullivan 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.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-07-21.