Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dan L. Longo, MD

Individual provider Medical Oncology Physician · NPI 1790842664

Dan L. Longo, MD is a Medical Oncology Physician in Brookline, Massachusetts. Licensed in Maryland. Registered with an NPI since 2007.

Licensed in
MD
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

111 Cypress St
Brookline, MA 02445-6002
Phone: (857) 307-0896
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence D0020564 (MD)

Record details

NPI number1790842664
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJanuary 2, 2007
Last updated in NPPESJune 14, 2012