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

Elsa Treffeisen

Individual provider Pediatric Allergy/Immunology Physician · NPI 1780116954

Elsa Treffeisen is a Pediatric Allergy/Immunology Physician in Boston, Massachusetts. Licensed in Massachusetts. Registered with an NPI since 2017.

Licensed in
MA
In the registry since
2017

Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-6000
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Allergy/Immunology Physician (primary) Taxonomy 2080P0201X · Licence 282739 (MA)

Record details

NPI number1780116954
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedMarch 28, 2017
Last updated in NPPESApril 24, 2023
Certification dateApril 24, 2023

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