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

Dr. Dennis Gregory Brown, M.D., J.D.

Rehabilitation Practitioner in Milwaukee, WI · enumerated 2007.

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

National Provider Identifier

1811034457

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Registry record

Entity type Individual (Type 1)

Name Dr. Dennis Gregory Brown

Credential M.D., J.D.

Sex Male

Practice address Milwaukee, WI, 53215

Phone (414) 671-1596

Fax (414) 671-0536

Enumeration date Jan 31, 2007

Last updated in NPPES Apr 16, 2020

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

Taxonomy & licenses

225400000X Rehabilitation Practitioner Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 22977 (WI) 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
30474800	Medicaid	WI	-

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 1811034457 active?

Yes, as of the latest NPPES snapshot, NPI 1811034457 is active (record last updated 2020-04-16).

How do I verify Dennis Brown's NPI record?

Cross-check NPI 1811034457 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-16.