Healthcare provider profile · identity verified

Mushtaque A Chachar, MD

Allopathic & Osteopathic Physicians|Internal Medicine|Sleep Medicine · NEW BEDFORD, MA · NPI 1891903712

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 Mushtaque A Chachar, MD received $1,157.56 in general payments during 2025 across 59 reported records.

ABBVIE INC. accounted for 36.7% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 18 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Nurtec Odt, Rexulti.

Lundbeck LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported REXULTI as an associated drug or biological on 71829 records involving 25812 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Rexulti by this doctor in 2024.

PFIZER 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 NURTEC ODT as an associated drug or biological on 217574 records involving 54025 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Nurtec Odt by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,157.56

59 reported records · 14 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
ABBVIE INC. Unresolved — no canonical attribution shown $424.7436.7%172025
PFIZER INC. Unresolved — no canonical attribution shown $200.8017.4%182025
Biogen, Inc. Unresolved — no canonical attribution shown $100.528.7%42025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $91.407.9%52025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$65.205.6%22025
Cycle Pharmaceuticals Inc Unresolved — no canonical attribution shown $59.235.1%32025
Azurity Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $47.504.1%22025
Neurelis, Inc. Neurelis, Inc.
exact · evidence 2025-02-20
$34.683.0%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $31.632.7%12025
Lundbeck LLC Unresolved — no canonical attribution shown $21.851.9%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $20.891.8%12025
JAZZ PHARMACEUTICALS INC. Unresolved — no canonical attribution shown $20.561.8%12025
InSightec,Inc Unresolved — no canonical attribution shown $20.521.8%12025
Aucta Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $18.041.6%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,157.5659

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
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $424.74 17 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $424.74 17 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $168.21 16 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $153.68 11 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $91.40 5 2025
Source payment records
SKYCLARYS
Normalized: skyclarys
Drug Biogen, Inc. $71.84 3 2025
Source payment records
Tascenso ODT
Normalized: tascenso odt
Drug Cycle Pharmaceuticals Inc $59.23 3 2025
Source payment records
HORIZANT
Normalized: horizant
Drug Azurity Pharmaceuticals, Inc. $47.50 2 2025
Source payment records
Bafiertam
Normalized: bafiertam
Drug Cycle Pharmaceuticals Inc $38.18 2 2025
Source payment records
VALTOCO
Normalized: valtoco
Drug Neurelis, Inc. $34.68 2 2025
Source payment records
KESIMPTA
Normalized: kesimpta
Drug Novartis Pharmaceuticals Corporation $31.63 1 2025
Source payment records
TYSABRI
Normalized: tysabri
Biological Biogen, Inc. $28.68 1 2025
Source payment records
VUMERITY
Normalized: vumerity
Drug Biogen, Inc. $28.68 1 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Lundbeck LLC $21.85 1 2025
Source payment records
EMGALITY
Normalized: emgality
Drug Lilly USA, LLC $20.89 1 2025
Source payment records
EPIDIOLEX
Normalized: epidiolex
Drug JAZZ PHARMACEUTICALS INC. $20.56 1 2025
Source payment records
Exablate
Normalized: exablate
Device InSightec,Inc $20.52 1 2025
Source payment records
Motpoly XR
Normalized: motpoly xr
Drug Aucta Pharmaceuticals, Inc. $18.04 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
NURTEC ODT
nurtec odt
2025 Nurtec Odt 2024 25
Beneficiary count suppressed
exact normalized Medicare Part D
REXULTI
rexulti
2025 Rexulti 2024 17
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
Lundbeck LLC
Exact reporting entity; no affiliate inference
2025 REXULTI
open payments reported associated product
CMS Open Payments — General Payments
71829 supporting records · 25812 recipient NPIs · example record 1251759986
Rexulti · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 NURTEC ODT
open payments reported associated product
CMS Open Payments — General Payments
217574 supporting records · 54025 recipient NPIs · example record 1228794063
Nurtec Odt · 2024
Exact normalized brand match · 1 Part D row
25 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
GabapentinGabapentin22659
LevetiracetamLevetiracetam16653
Memantine HclMemantine Hcl15647
Donepezil HclDonepezil Hcl14042
Sertraline HclSertraline Hcl10023
LamotrigineLamotrigine9918
TopiramateTopiramate7730
Carbidopa-LevodopaCarbidopa/Levodopa7528
BaclofenBaclofen6931
Ropinirole HclRopinirole Hcl6821
Divalproex SodiumDivalproex Sodium5412
Amitriptyline HclAmitriptyline Hcl5017
Sumatriptan SuccinateSumatriptan Succinate5014
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine4714
NaproxenNaproxen4215
Cyclobenzaprine HclCyclobenzaprine Hcl4114
Quetiapine FumarateQuetiapine Fumarate4114
LacosamideLacosamide38suppressed
Trazodone HclTrazodone Hcl3812
Zolpidem TartrateZolpidem Tartrate3313
ClopidogrelClopidogrel Bisulfate3211
Atorvastatin CalciumAtorvastatin Calcium3113
PrimidonePrimidone30suppressed
Divalproex Sodium ErDivalproex Sodium28suppressed
Tizanidine HclTizanidine Hcl28suppressed
RivastigmineRivastigmine Tartrate26suppressed
Nurtec OdtRimegepant Sulfate25suppressed
Propranolol HclPropranolol Hcl24suppressed
PhenobarbitalPhenobarbital23suppressed
PregabalinPregabalin23suppressed
ZonisamideZonisamide22suppressed
Verapamil ErVerapamil Hcl19suppressed
Citalopram HbrCitalopram Hydrobromide17suppressed
Nortriptyline HclNortriptyline Hcl17suppressed
RexultiBrexpiprazole17suppressed
Hydroxyzine PamoateHydroxyzine Pamoate16suppressed
Venlafaxine HclVenlafaxine Hcl16suppressed
OxcarbazepineOxcarbazepine15suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl15suppressed
Aimovig AutoinjectorErenumab-Aooe14suppressed
IbuprofenIbuprofen14suppressed
Diclofenac SodiumDiclofenac Sodium12suppressed
Dimethyl FumarateDimethyl Fumarate12suppressed
CarbamazepineCarbamazepine11suppressed
Paroxetine HclParoxetine Hcl11suppressed
Phenytoin Sodium ExtendedPhenytoin Sodium Extended11suppressed

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 $1,157.56 · 59 records ABBVIE INC. AUSTEDO XR, Bafiertam, EMGALITY, EPIDIOLEX, Exablate, HORIZANT, KESIMPTA, Motpoly XR, NURTEC ODT, QULIPTA, REXULTI, SKYCLARYS, TYSABRI, Tascenso ODT, UBRELVY, VALTOCO, VUMERITY, ZAVZPRET 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