Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mark Robert Sutton, DDS

Dentist in Cos Cob, CT · enumerated 2011.

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

National Provider Identifier

1447557145

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Robert Sutton

Credential DDS

Sex Male

Practice address Cos Cob, CT, 06807

Phone (203) 869-2066

Fax (203) 869-1477

Enumeration date Feb 16, 2011

Last updated in NPPES Feb 16, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

122300000X Dentist Dental Providers · License 7365 (CT) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1447557145 active?

Yes, as of the latest NPPES snapshot, NPI 1447557145 is active (record last updated 2011-02-16).

How do I verify Mark Sutton's NPI record?

Cross-check NPI 1447557145 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Charles Zatzkin Dentist · Cos Cob, CT NPI 1164729190 Sean Sutton General Practice Dentistry · Cos Cob, CT NPI 1538666573

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-16.