Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Stone Chiropractic LLC

Q: What is the NPI number for Stone Chiropractic LLC?

The NPI for Stone Chiropractic LLC is 1033306816, a Type 2 (organization) record in the CMS NPPES registry.

Chiropractor in Watertown, CT · enumerated 2007 · authorized official Mark Stone, Chiropractic Physician.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1033306816

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Registry record

Entity type Organization (Type 2)

Legal business name Stone Chiropractic LLC

Practice address 51 Depot Square, Watertown, CT, 06795

Phone (860) 274-5484

Enumeration date Sep 26, 2007

Last updated in NPPES Apr 27, 2011

Taxonomy & classification

111N00000X Chiropractor Chiropractic Providers · License 000692 (CT) Primary

Authorized official

Name Mark Stone

Title Chiropractic Physician

Phone (860) 274-5484

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Stone Chiropractic LLC?

The NPI for Stone Chiropractic LLC is 1033306816, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Stone Chiropractic LLC?

NPPES lists Mark Stone (Chiropractic Physician) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-27.