Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kristin Brew, MD

Otolaryngology Physician in Castro Valley, CA · enumerated 2006.

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

National Provider Identifier

1669568655

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Registry record

Entity type Individual (Type 1)

Name Kristin Brew

Credential MD

Sex Female

Practice address 20101 Lake Chabot Rd Fl 3, Castro Valley, CA, 94546

Phone (510) 204-1844

Fax (510) 506-7729

Enumeration date Oct 5, 2006

Last updated in NPPES Dec 27, 2022

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License G73735 (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 1669568655 active?

Yes, as of the latest NPPES snapshot, NPI 1669568655 is active (record last updated 2022-12-27).

How do I verify Kristin Brew's NPI record?

Cross-check NPI 1669568655 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 2022-12-27.