Healthcare provider profile · identity verified

Mary Bailey, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · NEW HAVEN, CT · NPI 1558543686

Profile state: payments and partd Open Payments: 2025 Medicare Part D: 2024 Last identity check: 2026-08-10 Page data build: 2026-08-12

Verified facts

What the public records show

CMS Open Payments records show Mary Bailey, MD received $98,388.06 in general payments during 2025 across 63 reported records.

TG Therapeutics, Inc. accounted for 71.2% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 9 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Vumerity.

Biogen, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported TECFIDERA as an associated drug or biological on 28 records involving 22 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Tecfidera by this doctor in 2024.

Biogen, Inc. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported VUMERITY as an associated drug or biological on 16193 records involving 4044 distinct recipient NPIs. Public Medicare Part D data also shows 30 claims for Vumerity by this doctor in 2024.

These records do not establish that a payment influenced prescribing or medical care.

Payment overview · 2025

General Payments

$98,388.06

63 reported records · 7 companies

Separate record types

Research & Ownership

Research Payments (direct recipient): not present in the loaded data

Associated Research Funding (for example, named PI): not present in the loaded data

Ownership / Investment: not present in the loaded data

These categories are never added into the General Payments headline. Associated research funding must not be described as money the doctor personally received unless the source record supports that conclusion.

Who paid this doctor?

Companies in 2025 General Payments

Reported companyCanonical companyAmountShareRecordsYear
TG Therapeutics, Inc. Unresolved — no canonical attribution shown $70,069.1971.2%432025
Biogen, Inc. Unresolved — no canonical attribution shown $19,133.6919.4%102025
EMD Serono, Inc. Unresolved — no canonical attribution shown $8,988.719.1%32025
Genentech USA, Inc. Unresolved — no canonical attribution shown $95.050.1%32025
Genentech, Inc. Unresolved — no canonical attribution shown $59.670.1%22025
Amgen Inc. Unresolved — no canonical attribution shown $27.180.0%12025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $14.570.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$86,780.0023
Consulting Fee$5,753.004
Travel and Lodging$4,500.298
Food and Beverage$1,336.0627
Education$18.711

A meal, consulting fee, royalty, and travel payment describe different kinds of reported relationships and should not be interpreted as equivalent.

Analysis 1 · Payment-linked products

Products named in Open Payments records

Reported productTypeReported companyRelated amount*RecordsYear
BRIUMVI
Normalized: briumvi
Drug TG Therapeutics, Inc. $70,069.19 43 2025
Source payment records
VUMERITY
Normalized: vumerity
Drug Biogen, Inc. $13,185.69 7 2025
Source payment records
Mavenclad
Normalized: mavenclad
Drug EMD Serono, Inc. $8,970.00 2 2025
Source payment records
TYSABRI
Normalized: tysabri
Biological Biogen, Inc. $5,993.69 5 2025
Source payment records
Ocrevus Zunovo
Normalized: ocrevus zunovo
Biological Genentech USA, Inc., Genentech, Inc. $94.87 3 2025
Source payment records
Ocrevus
Normalized: ocrevus
Biological Genentech USA, Inc., Genentech, Inc. $59.85 2 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $27.18 1 2025
Source payment records
PROLIA
Normalized: prolia
Biological Amgen Inc. $27.18 1 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $14.57 1 2025
Source payment records

* Product-associated amounts are non-additive because one payment record may name more than one product.

These products were named on specific Open Payments records. A named product does not show that the payment influenced treatment or prescribing.

Public prescribing for products named in payments

Open Payments productPayment yearPart D brandPart D yearClaimsMatch methodSource
VUMERITY
vumerity
2025 Vumerity 2024 30
Beneficiary count suppressed
exact normalized Medicare Part D

The presence of the same drug in both datasets does not show that a payment caused or influenced a prescription.

Analysis 2 · Same-company prescribing overlap

Drugs reported in other payments from the same company that also appear in Medicare Part D

This analysis is independent from products named on this doctor’s individual payment records. A row appears only when the exact Open Payments reporting entity paid this doctor, that same reporting entity reported the drug or biological on at least 10 loaded General Payment records involving at least 2 distinct recipient NPIs, and this doctor has the same non-generic brand in public Part D data. This does not mean the company owns or manufactures the drug.

Paying companyPayment yearDrug reported by same entityOpen Payments evidencePart DClaimsBeneficiaries
Biogen, Inc.
Exact reporting entity; no affiliate inference
2025 TECFIDERA
open payments reported associated product
CMS Open Payments — General Payments
28 supporting records · 22 recipient NPIs · example record 1208304358
Tecfidera · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Biogen, Inc.
Exact reporting entity; no affiliate inference
2025 VUMERITY
open payments reported associated product
CMS Open Payments — General Payments
16193 supporting records · 4044 recipient NPIs · example record 1208299697
Vumerity · 2024
Exact normalized brand match · 1 Part D row
30 suppressed by CMS

These facts do not show that a payment was for the drug, that the company owns or manufactures the drug, or that a payment caused or influenced prescribing.

Public Medicare Part D data

Provider-and-drug rows loaded for 2024

BrandGenericClaimsBeneficiaries
BaclofenBaclofen13446
GabapentinGabapentin9231
Dalfampridine ErDalfampridine55suppressed
Kesimpta PenOfatumumab49suppressed
Tizanidine HclTizanidine Hcl4920
AubagioTeriflunomide30suppressed
VumerityDiroximel Fumarate30suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine27suppressed
ClonazepamClonazepam24suppressed
ModafinilModafinil24suppressed
Sertraline HclSertraline Hcl22suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl21suppressed
AmantadineAmantadine Hcl17suppressed
Ropinirole HclRopinirole Hcl16suppressed
Avonex (4 Pack)Interferon Beta-1a14suppressed
CopaxoneGlatiramer Acetate14suppressed
LorazepamLorazepam14suppressed
Duloxetine HclDuloxetine Hcl13suppressed
TecfideraDimethyl Fumarate11suppressed

Timeline

Payment and prescribing data by year

Open Payments and Medicare Part D may refer to different years. They are shown separately rather than aligned as if they describe the same period.

YearGeneral PaymentsMain payerExplicit productsCompany overlapsPart D coverage
2025 $98,388.06 · 63 records TG Therapeutics, Inc. BRIUMVI, EVENITY, Mavenclad, Ocrevus, Ocrevus Zunovo, PROLIA, TYSABRI, ULTOMIRIS, VUMERITY 2
2024 Complete

Questions to ask

Questions you could discuss with your doctor

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Loaded source releases

DatasetYearPublicationSource
CMS Open Payments — General Payments 2025 2026-06-30 Original source
Medicare Part D Prescribers by Provider and Drug 2024 2026-05-06 Original source
NPPES Data Dissemination V2 current / reference data 2026-08-10 Original source

Methodology version: 2.1

Editorial template version: 2.4

Product contract version: 2.0

Schema version: 0.7.0

Page data build: 2026-08-12T23:34:59.370714+00:00

Publication policy: eligible for indexing after public-launch controls are enabled

Full methodology · Questions & answers · Report a possible error