Individual provider · Type 1 NPI

James L. Baker, MD MPH

Internal Medicine Physician · Boston, MA

NPI number 1821071606 Active

Practice location

55 Fruit St, Fnd 600
Boston, MA 02114-2621

Call (617) 724-9197 Map

Fax (617) 724-8693

Mailing address

PO Box 9142, Mass General Physician Organization
Charlestown, MA 02129-9142

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000X51162 (MA)

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 1821071606

James L. Baker, MD MPH's National Provider Identifier is 1821071606, issued on Nov 25, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Boston, MA. The record was last updated on Jul 13, 2026.