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Dr. Brett Matthew Lowenthal, M.D.

Anatomic Pathology & Clinical Pathology Physician in San Diego, CA · enumerated 2015.

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

National Provider Identifier

1740668003

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Registry record

Entity type Individual (Type 1)
Name Dr. Brett Matthew Lowenthal
Credential M.D.
Sex Male
Practice address 4647 Zion Ave, San Diego, CA, 92120
Phone (619) 528-5346
Enumeration date May 7, 2015
Last updated in NPPES Nov 30, 2021

Taxonomy & licenses

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License A128364 (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.

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Frequently asked questions

Where does Brett Lowenthal practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Brett Lowenthal?
The National Provider Identifier (NPI) for Brett Lowenthal is 1740668003, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-30.