Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. H. George Brennan, M.D.

Otolaryngology/Facial Plastic Surgery Physician in Newport Beach, CA · enumerated 2006.

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

National Provider Identifier

1558396895

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Registry record

Entity type Individual (Type 1)

Name Dr. H. George Brennan

Credential M.D.

Sex Male

Practice address 400 Newport Center Dr, Ste. 100, Newport Beach, CA, 92660

Phone (949) 644-1641

Enumeration date Jul 12, 2006

Last updated in NPPES Mar 10, 2026

Taxonomy & licenses

207YX0905X Otolaryngology/Facial Plastic Surgery Physician Allopathic & Osteopathic Physicians · License C27484 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1558396895 active?

Yes, as of the latest NPPES snapshot, NPI 1558396895 is active (record last updated 2026-03-10).

How do I verify H. Brennan's NPI record?

Cross-check NPI 1558396895 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 2026-03-10.