What is Isabelle Zamfirescu's specialty?

Isabelle Zamfirescu (NPI 1881802031) is a Medicare-billing provider whose primary specialty is Endocrinology in South Weymouth, MA.

Where does Isabelle Zamfirescu practice?

Isabelle Zamfirescu practices in South Weymouth, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1881802031.

How much does Medicare pay Isabelle Zamfirescu?

Isabelle Zamfirescu (NPI 1881802031) received approximately $287K in total Medicare Part B payments, serving 669 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1881802031

Isabelle ZamfirescuMD

EndocrinologySouth Weymouth, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,791

Unique beneficiaries

—

Total services

10,668

Distinct HCPCS

Medicare payment

$276K

Peer benchmark

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

PRESCRIBING · PART D · 2024

Total Rx claims

4,270

Beneficiaries

—

Total drug cost

$1.5M

Distinct drugs

Brand share

59.1%

Top prescribed drugs

Levothyroxine Sodium430 claims

Semaglutide314 claims

Metformin Hcl261 claims

Glipizide218 claims

Pen Needle, Diabetic186 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.

REFERRAL NETWORK

Where Isabelle Zamfirescu'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). 26 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Harbor Medical Associates, Inc. Clinical Laboratory · South Weymouth, MA	425	1,719
SOUTH SHORE HOSPITAL INC.	182	528
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	87	176
Harbor Medical Associates, Inc. Independent Diagnostic Testing Facility (IDTF) · South Weymouth, MA	83	114
Robert Gore Diagnostic Radiology · South Weymouth, MA	36	95
Seth Mcclennen Clinical Cardiac Electrophysiology · South Weymouth, MA	26	48
Alexander Morss Cardiology · Portland, OR	26	74
Sarah Sulzner Hospitalist · S Weymouth, MA	22	30
Stephen Bliss Diagnostic Radiology · Los Angeles, CA	21	42
Paul Schubert Cardiology · South Weymouth, MA	20	47
Paresha Patel Internal Medicine · South Weymouth, MA	19	38
Rafael Altieri Diagnostic Radiology · South Weymouth, MA	18	32

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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