Individual provider · Type 1 NPI

Brian James O'Neill, MD

Internal Medicine Physician · Martinez, CA

NPI number 1366425985 Active

Practice location

150 Muir Rd
Martinez, CA 94553-4668

Call (925) 372-2018 Map

Fax (925) 372-2020

Mailing address

1556 Thurman Way
Folsom, CA 95630-7307

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000XG42079 (CA)

Internal Medicine Physician: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medi…

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About NPI 1366425985

Brian James O'Neill, MD's National Provider Identifier is 1366425985, issued on Nov 29, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Martinez, CA. The record was last updated on Jul 13, 2026.