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Mary G Diana, MD

Obstetrics & Gynecology Physician in Westport, CT · enumerated 2006.

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

National Provider Identifier

1962445684

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Registry record

Entity type Individual (Type 1)
Name Mary G Diana
Credential MD
Sex Female
Practice address 12 Avery Place, Avery Center for Obstetrics & Gynecology, Westport, CT, 06880
Phone (203) 227-5125
Enumeration date Jun 13, 2006
Last updated in NPPES Dec 8, 2020

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 56749 (CT) Primary
207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 200058 (NY) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
0667910001 Other NY DME
01659383 Medicaid NY -
P00413156 Other NY MEDICARE RAILROAD

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 Mary Diana?
The National Provider Identifier (NPI) for Mary Diana is 1962445684, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Diana practice?
The practice location on file with NPPES is in Westport, CT. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-08.