Individual provider · Type 1 NPI

Marc Allen, DO

Internal Medicine Physician · Commack, NY

NPI number 1356309892 Active

Practice location

358 Veterans Memorial Highway, Ste 11
Commack, NY 11725

Call (631) 543-8844 Map

Fax (631) 543-8840

Mailing address

1045 W Jericho Tpke, Ste 11
Smithtown, NY 11787-3205

Specialties and licenses

TaxonomyCodeLicense
Internal Medicine Physician Primary 207R00000X2238341 (NY)

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…

Other internal medicine physician providers in Commack

See all in Commack →

About NPI 1356309892

Marc Allen, DO's National Provider Identifier is 1356309892, issued on May 3, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Commack, NY. The record was last updated on Jul 13, 2026.