What is Ellen Marqusee's specialty?

Ellen Marqusee (NPI 1215988266) is a Medicare-billing provider whose primary specialty is Endocrinology in Boston, MA.

Where does Ellen Marqusee practice?

Ellen Marqusee practices in Boston, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1215988266.

How much does Medicare pay Ellen Marqusee?

Ellen Marqusee (NPI 1215988266) received approximately $47K in total Medicare Part B payments, serving 389 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1215988266

Ellen MarquseeMD

EndocrinologyBoston, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

502

Unique beneficiaries

—

Total services

531

Distinct HCPCS

Medicare payment

$38K

Peer benchmark

Total Medicare services vs. 341 Endocrinology providers in MA — above median (cohort median 496).

PRESCRIBING · PART D · 2024

Total Rx claims

857

Beneficiaries

—

Total drug cost

$40K

Distinct drugs

Brand share

20.2%

Top prescribed drugs

Levothyroxine Sodium531 claims

Levothyroxine Sodium114 claims

Methimazole66 claims

Alendronate Sodium51 claims

Levothyroxine Sodium37 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

Hospital

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Ellen Marqusee's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 0 inbound referrers · 6 outbound destinations.

Receives referrals from

Inbound — who sends patients here

No inbound pairs above the suppression threshold.

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
BRIGHAM & WOMENS HOSPITAL, INC.	153	596
Julie Ritner Diagnostic Radiology · Cleveland, OH	18	37
HELLER, HOWARD	16	36
BRIGHAM AND WOMEN'S FAULKNER HOSPITAL, INC	15	41
DANA-FARBER CANCER INSTITUTE, INC.	11	27
Peter Doubilet Diagnostic Radiology · Boston, MA	11	22

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events