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

Dr. Paul Kenneth Brownstone, M.D.

Clinical Pharmacology Physician in Boulder, CO · enumerated 2006.

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

National Provider Identifier

1780789214

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Registry record

Entity type Individual (Type 1)

Name Dr. Paul Kenneth Brownstone

Credential M.D.

Sex Male

Practice address Boulder, CO, 80304

Phone (303) 443-7229

Fax (303) 443-7748

Enumeration date Sep 13, 2006

Last updated in NPPES Sep 11, 2025

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

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 30904 (CO) Secondary

208U00000X Clinical Pharmacology Physician Allopathic & Osteopathic Physicians · License 30904 (CO) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 Paul Brownstone's NPI record?

Cross-check NPI 1780789214 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1780789214 active?

Yes, as of the latest NPPES snapshot, NPI 1780789214 is active (record last updated 2025-09-11).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.