Has Susan Zweizig, MD received payments from drug or device companies?

Yes. Drug and device makers reported $168 in general payments to Susan Zweizig, MD across 4 transactions between 2019–2025. Most Open Payments records nationally are meals worth under $20; a reported payment is not evidence of wrongdoing.

Does a payment mean Susan Zweizig, MD did something wrong?

No. Federal law requires drug and device makers to report almost every transfer of value to a physician, including a $14 sandwich at a lunch presentation. Consulting fees, research funding and royalties to device inventors are ordinary, legal parts of medicine. This site reports what was disclosed; it makes no allegation.

Where does this information about Susan Zweizig, MD come from?

The U.S. Centers for Medicare & Medicaid Services. Payments come from Open Payments, published under the Physician Payments Sunshine Act. Billing and prescribing figures come from the Medicare Physician & Other Practitioners and Part D Prescriber public use files for 2024.

Susan Zweizig, MD

Gynecologic Oncology · Worcester, MANPI 1992786925

Payments from drug & device makers

What this record shows

Almost everything reported here is food and beverage — 100.0% of the total across 4 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Tesaro, Inc. accounts for 85.8% of it on its own, with 1 other manufacturer making up the rest. That places this record below the midpoint for gynecologic oncology clinicians in MA, where the typical reported total is $400.

$168in general payments, 2019–2025

Across 4 payments — averaging $42.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.

Tesaro, Inc.$144
Intuitive Surgical$24

$671,456in research payments, 2019–2025

Across 66 payments — averaging $10,174 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.

Merck$476K
GSK$111K
Tesaro, Inc.$65K
AbbVie$19K

What the payments were for

Food & beverage$168100%

Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.

Who reported the general payments

Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.

Company	Payments	Total
Tesaro, Inc.	2	$144
Intuitive Surgical	2	$24

What the payments were tied to

Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.

ZEJULA$125

How this compares

$168 in reported general payments places this provider in the 35th percentile of 32 gynecologic oncology providers in Massachusetts.

See all gynecologic oncology providers in Massachusetts →

Medicare billing

Part B allowed, 2024

$57,397

Medicare patients

150

Services billed

349

What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.

Most prescribed under Part D

Drug	Claims	Cost to plans & patients
ZejulaNiraparib Tosylate	17	$401,010
LynparzaOlaparib	11	$166,674
EliquisApixaban	19	$13,404
XareltoRivaroxaban	16	$10,656
Megestrol Acetate	33	$1,936
Prochlorperazine Maleate	38	$1,150
Ondansetron Hcl	41	$475
Dexamethasone	48	$400
Fluconazole	14	$58

Paid to pharmacies, not to this prescriber.

Other gynecologic oncology in Worcester

Larissa MatteiWorcester$2K
Annette ChenWorcester$237
Sarah HughesWorcester$45
Sharmilee KoretsWorcester$30
Amy BregarBoston$36K
Whitfield GrowdonBoston$27K
Alexander MelamedBoston$5K
Tashanna MyersSpringfield$4K
Sarah ParaghamianBoston$3K
Michael MutoBoston$3K

See the full list for Massachusetts →

Where these figures come from

Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
Identity: NPPES NPI Registry, July 2026.

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