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

Individual provider Psychiatry Physician · NPI 1003393380

Chelsea Rachael Cosner is a Psychiatry Physician in Boston, Massachusetts. Licensed in Massachusetts and Maryland. Registered with an NPI since 2018.

Licensed in
MA, MD
In the registry since
2018
Specialties on file
4
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Practice location Address checks out

55 Fruit St
Boston, MA 02114-2621
Phone: (617) 724-5600
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Child & Adolescent Psychiatry Physician (primary) Taxonomy 2084P0804X · Licence 1018908 (MA)
Psychiatry Physician Taxonomy 2084P0800X · Licence 1018908 (MA)
Psychiatry Physician Taxonomy 2084P0800X · Licence D0090427 (MD)
Child & Adolescent Psychiatry Physician Taxonomy 2084P0804X · Licence D0090427 (MD)

Record details

NPI number1003393380
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJuly 19, 2018
Last updated in NPPESOctober 9, 2025
Certification dateOctober 9, 2025

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients17
Services billed 35 a service is one billed item, such as a visit, a test or a procedure
Average patient age50

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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