NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diane Wirz, M.D.

Neurology Physician in Danbury, CT · enumerated 2005.

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

National Provider Identifier

1922003805

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Diane Wirz
Credential M.D.
Sex Female
Practice address 69 Sand Pit Rd, Ste 300, Danbury, CT, 06810
Phone (203) 748-2551
Fax (203) 790-6375
Enumeration date Jun 16, 2005
Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License CT022964 (CT) Primary
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
1229640 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

Is NPI 1922003805 active?
Yes, as of the latest NPPES snapshot, NPI 1922003805 is active (record last updated 2007-07-08).
How do I verify Diane Wirz's NPI record?
Cross-check NPI 1922003805 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.