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Dr. Brian Peter First, M.D.

Internal Medicine Physician in San Diego, CA · enumerated 2006.

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

National Provider Identifier

1770531816

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Registry record

Entity type Individual (Type 1)
Name Dr. Brian Peter First
Credential M.D.
Sex Male
Practice address 4282 Genesee Ave, #103, San Diego, CA, 92117
Phone (858) 292-0108
Fax (858) 292-9097
Enumeration date May 4, 2006
Last updated in NPPES Jun 24, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A33952 (CA) Primary
207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License A33952 (CA) Secondary
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

What is the NPI number for Brian First?
The National Provider Identifier (NPI) for Brian First is 1770531816, a Type 1 (individual) record in the CMS NPPES registry.
Where does Brian First practice?
The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-06-24.