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

Mrs. Diane Lynn Dunniway, NPP

Obstetrics & Gynecology Nurse Practitioner in Stamford, CT · enumerated 2006 · practices at My Catholic Doctor Medical Group PC.

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

National Provider Identifier

1104986330

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Registry record

Entity type Individual (Type 1)

Name Mrs. Diane Lynn Dunniway

Credential NPP

Sex Female

Practice address Stamford, CT, 06905

Phone (314) 888-5233

Enumeration date Dec 11, 2006

Last updated in NPPES Mar 17, 2023

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

Taxonomy & licenses

363LX0001X Obstetrics & Gynecology Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209004498 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
041207195	Medicaid	IL	-

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 Diane Dunniway?

The National Provider Identifier (NPI) for Diane Dunniway is 1104986330, a Type 1 (individual) record in the CMS NPPES registry.

Where does Diane Dunniway practice?

The practice location on file with NPPES is in Stamford, CT. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-17.