Individual provider · Type 1 NPI

Mark Gelfand, MD

Internal Medicine Physician · Brooklyn, NY

NPI number 1801849658 Active

Practice location

415 Oceanview Ave
Brooklyn, NY 11235

Fax (718) 616-0165

Specialties and licenses

Taxonomy	Code	License
Internal Medicine Physician Primary	207R00000X	211150 (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…

2 other providers at this address

Other internal medicine physician providers in Brooklyn

See all in Brooklyn →

About NPI 1801849658

Mark Gelfand, MD's National Provider Identifier is 1801849658, issued on May 19, 2006. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Brooklyn, NY. The record was last updated on Jul 13, 2026.