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

Dr. Warren Shelburne Brown III, M.D.

Internal Medicine Physician in Pasadena, CA · enumerated 2006 · practices at Proactive Care Professionals, Inc. A Medical Corporation.

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

National Provider Identifier

1083776322

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Registry record

Entity type Individual (Type 1)

Name Dr. Warren Shelburne Brown III

Credential M.D.

Sex Male

Practice address Pasadena, CA, 91101

Phone (626) 355-8595

Fax (626) 355-8591

Enumeration date Dec 14, 2006

Last updated in NPPES Sep 12, 2024

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

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License A70884 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A70884 (CA) 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
A70884	Other	CA	STATE MEDICAL LICENSE NUM
S1776	Other	TX	STATE MEDICAL LICENSE NUMBER

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

How do I verify Warren Brown's NPI record?

Cross-check NPI 1083776322 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1083776322 active?

Yes, as of the latest NPPES snapshot, NPI 1083776322 is active (record last updated 2024-09-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-09-12.