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
Mailing address111 Cypress St, Brookline, MA 02445-6002