NPI Portal NPI Lookup & Verification

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

Mark Francis Di Loreto, O.D.

Optometrist in Kensington, CT · enumerated 2009.

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

National Provider Identifier

1629209150

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mark Francis Di Loreto
Credential O.D.
Sex Male
Practice address Kensington, CT, 06037
Phone (860) 829-1020
Fax (860) 828-5246
Enumeration date Jul 31, 2009
Last updated in NPPES Sep 13, 2022

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 002773 (CT) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
008035812 Medicaid CT -

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 Mark Di Loreto?
The National Provider Identifier (NPI) for Mark Di Loreto is 1629209150, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mark Di Loreto practice?
The practice location on file with NPPES is in Kensington, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-09-13.