Individual provider · Type 1 NPI

John David Mayfield, MD

Internal Medicine Physician · Boston, MA

NPI number 1669030722 Active

Practice location

55 Fruit St
Boston, MA 02114-2621

Call (617) 726-8323 Map

Mailing address

701 Grove Rd
Greenville, SC 29605-4210

Other practice locations

  • 1 Medical Center Dr, Lebanon, NH 03756-0001 · (603) 650-5000
  • 701 Grove Rd, Greenville, SC 29605-4210 · (864) 455-7882

Specialties and licenses

TaxonomyCodeLicense
Diagnostic Radiology Physician 2085R0202X1017847 (MA)
Internal Medicine Physician Primary 207R00000XLL82596 (SC)
Diagnostic Radiology Physician 2085R0202X33181 (NH)

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 1669030722

John David Mayfield, MD's National Provider Identifier is 1669030722, issued on Jun 4, 2019. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Boston, MA. The record was last updated on Jun 11, 2026.