Individual provider · Type 1 NPI

Douglas J. Hay, MD

Internal Medicine Physician · Colton, CA

NPI number 1386690980 Active

Practice location

1300 E Cooley Dr
Colton, CA 92324-3905

Call (909) 370-4100 Map

Fax (909) 796-4158

Mailing address

PO Box 2200
Redlands, CA 92373-0722

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000XG47396 (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 1386690980

Douglas J. Hay, MD's National Provider Identifier is 1386690980, issued on May 25, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Colton, CA. The record was last updated on Jul 13, 2026.