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Gregory Norman Messner.

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Plano, TX · enumerated 2013 · authorized official Michelle Marcheses, Office Manager.

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

National Provider Identifier

1558608174

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Registry record

Entity type Organization (Type 2)
Legal business name Gregory Norman Messner.
Practice address 4708 Dexter Dr Ste 300, Plano, TX, 75093
Phone (469) 750-8041
Fax (469) 750-3057
Enumeration date Jan 16, 2013
Last updated in NPPES Dec 20, 2023

Taxonomy & classification

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians Secondary
208G00000X Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician Allopathic & Osteopathic Physicians Primary
261QE0002X Emergency Care Clinic/Center Ambulatory Health Care Facilities Secondary

Authorized official

Name Michelle Marcheses
Title Office Manager
Phone (214) 205-4995

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

What is the NPI number for Gregory Norman Messner.?
The NPI for Gregory Norman Messner. is 1558608174, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Gregory Norman Messner.?
NPPES lists Michelle Marcheses (Office Manager) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-20.