NPI Portal NPI Lookup & Verification

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

Dr. Mark Thomas Winter

Optometrist in Pensacola, FL · enumerated 2006.

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

National Provider Identifier

1841366028

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Mark Thomas Winter
Sex Male
Practice address Pensacola, FL, 32504
Phone (850) 477-0194
Fax (850) 477-7025
Enumeration date Nov 28, 2006
Last updated in NPPES Jul 4, 2008

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 OPC 2316 (FL) Primary

Other identifiers

Identifier Type State Issuer
260283946 Other FL NVA
07885400 Medicaid FL -
260283946 Other FL SUPERIOR
260283946 Other FL TRICARE STANDARD
FL2316 Other FL EYEMED
260283946 Other FL AETNA
44939 Other FL AVESIS
47093 Other FL SPECTERA

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

How do I verify Mark Winter's NPI record?
Cross-check NPI 1841366028 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1841366028 active?
Yes, as of the latest NPPES snapshot, NPI 1841366028 is active (record last updated 2008-07-04).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-04.