What is Corrine Zarwan's specialty?

Corrine Zarwan (NPI 1790724409) is a Medicare-billing provider whose primary specialty is Medical Oncology in Burlington, MA.

Where does Corrine Zarwan practice?

Corrine Zarwan practices in Burlington, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1790724409.

How much does Medicare pay Corrine Zarwan?

Corrine Zarwan (NPI 1790724409) received approximately $53K in total Medicare Part B payments, serving 247 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1790724409

Corrine ZarwanMD

PRACTICELAHEY CLINIC, INC.See all providers at this practice →

Medical OncologyBurlington, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

443

Unique beneficiaries

—

Total services

765

Distinct HCPCS

Medicare payment

$46K

Peer benchmark

Total Medicare services vs. 257 Medical Oncology providers in MA — top quintile (cohort median 290).

PRESCRIBING · PART D · 2024

Total Rx claims

1,001

Beneficiaries

—

Total drug cost

$1.3M

Distinct drugs

Brand share

12.7%

Top prescribed drugs

Anastrozole383 claims

Tamoxifen Citrate118 claims

Letrozole62 claims

Lorazepam62 claims

Alendronate Sodium42 claims

QUALITY · MIPS · 2024

Final MIPS score

92.0

Quality

76.6

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.71%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Corrine Zarwan'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
GIRSHOVICH, LYUBOV	38	232
Mary Katherine Mcneice Nurse Practitioner · Burlington, MA	34	214
KARP, STEPHEN	31	120
Keith Stuart Hematology-Oncology · Boston, MA	28	229
MORRIS, PATRICIA	25	55
Dmitry Elentuck Diagnostic Radiology · Burlington, MA	20	40
Jeanette Chun Diagnostic Radiology · Burlington, MA	20	64
POLLAK, ALAIN	19	51
Christoph Wald Diagnostic Radiology · Rochester, MN	19	88
Lisl Warren Diagnostic Radiology · Burlington, MA	18	39
Neela Natarajan Medical Oncology · Burlington, MA	18	165
Jennifer Broder Diagnostic Radiology · Burlington, MA	18	44

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