Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Philip Stone, D.C.

Chiropractor in Watertown, CT · enumerated 2005.

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

National Provider Identifier

1801896790

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Philip Stone

Credential D.C.

Sex Male

Practice address 51 Depot St, Suite 504, Watertown, CT, 06795

Phone (860) 274-5484

Fax (860) 274-4923

Enumeration date Jul 21, 2005

Last updated in NPPES Jul 13, 2026

Taxonomy & licenses

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

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

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Frequently asked questions

How do I verify Mark Stone's NPI record?

Cross-check NPI 1801896790 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1801896790 active?

Yes, as of the latest NPPES snapshot, NPI 1801896790 is active (record last updated 2026-07-13).

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