Healthcare provider profile · identity verified

Derek R Smith, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · NORWICH, CT · NPI 1407869019

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 Derek R Smith, MD received $77,297.11 in general payments during 2025 across 318 reported records.

TG Therapeutics, Inc. accounted for 69.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 47 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Nurtec Odt, Ocrevus, Tysabri, 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 36 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 TYSABRI as an associated drug or biological on 12612 records involving 3572 distinct recipient NPIs. Public Medicare Part D data also shows 78 claims for Tysabri 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 11 claims for Vumerity by this doctor in 2024.

Genentech USA, 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 Ocrevus as an associated drug or biological on 3064 records involving 1133 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Ocrevus by this doctor in 2024.

Genentech, 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 Ocrevus as an associated drug or biological on 450 records involving 299 distinct recipient NPIs. Public Medicare Part D data also shows 32 claims for Ocrevus by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MAYZENT as an associated drug or biological on 26 records involving 26 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Mayzent by this doctor in 2024.

Otsuka America Pharmaceutical, 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 NUEDEXTA as an associated drug or biological on 393 records involving 285 distinct recipient NPIs. Public Medicare Part D data also shows 44 claims for Nuedexta 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 74 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

$77,297.11

318 reported records · 38 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 $53,681.6869.5%392025
Biogen, Inc. Unresolved — no canonical attribution shown $11,618.6715.0%292025
EMD Serono, Inc. Unresolved — no canonical attribution shown $2,703.733.5%322025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $2,428.273.1%42025
Amgen Inc. Unresolved — no canonical attribution shown $573.770.7%142025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $552.280.7%302025
PFIZER INC. Unresolved — no canonical attribution shown $493.190.6%222025
ABBVIE INC. Unresolved — no canonical attribution shown $490.480.6%242025
Lundbeck LLC Unresolved — no canonical attribution shown $475.290.6%132025
Genentech USA, Inc. Unresolved — no canonical attribution shown $457.260.6%192025
UCB, Inc. Unresolved — no canonical attribution shown $336.830.4%82025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $335.280.4%82025
Genentech, Inc. Unresolved — no canonical attribution shown $335.050.4%42025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $330.240.4%52025
ARGENX US, INC. Unresolved — no canonical attribution shown $300.900.4%42025
Abbott Laboratories Unresolved — no canonical attribution shown $263.030.3%22025
GENZYME CORPORATION Unresolved — no canonical attribution shown $255.770.3%42025
Teva Pharmaceuticals USA, Inc. Unresolved — no canonical attribution shown $191.700.2%52025
Celgene Corporation Unresolved — no canonical attribution shown $181.890.2%112025
Eisai Inc. Unresolved — no canonical attribution shown $162.320.2%72025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $160.720.2%32025
Cycle Pharmaceuticals Inc Unresolved — no canonical attribution shown $143.070.2%42025
Alkermes, Inc. Unresolved — no canonical attribution shown $124.180.2%12025
Neurocrine BioSciences, Inc. Unresolved — no canonical attribution shown $123.180.2%12025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $107.020.1%52025
ANI Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $76.260.1%32025
SK Life Science, Inc. SK Life Science, Inc.
exact · evidence 2025-04-03
$58.970.1%22025
Grifols USA, LLC Unresolved — no canonical attribution shown $50.480.1%22025
Alexion Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $43.200.1%22025
Tanabe Pharma America, Inc. Unresolved — no canonical attribution shown $37.760.1%22025
Lilly USA, LLC Unresolved — no canonical attribution shown $34.190.0%22025
GE HEALTHCARE Unresolved — no canonical attribution shown $29.890.0%12025
ConvaTec Inc. Unresolved — no canonical attribution shown $27.090.0%12025
AstraZeneca Pharmaceuticals LP Unresolved — no canonical attribution shown $26.470.0%12025
Octapharma USA, Inc. Unresolved — no canonical attribution shown $25.420.0%12025
Averitas Pharma Inc. Unresolved — no canonical attribution shown $23.600.0%12025
Life Molecular Imaging Ltd Unresolved — no canonical attribution shown $20.750.0%12025
CSL Behring Unresolved — no canonical attribution shown $17.230.0%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$60,827.5019
Food and Beverage$9,507.63282
Travel and Lodging$3,478.5610
Consulting Fee$3,446.005
Education$37.422

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. $53,681.68 39 2025
Source payment records
VUMERITY
Normalized: vumerity
Drug Biogen, Inc. $10,818.37 20 2025
Source payment records
ZEPOSIA
Normalized: zeposia
Drug Celgene Corporation, E.R. Squibb & Sons, L.L.C. $2,561.77 14 2025
Source payment records
TYSABRI
Normalized: tysabri
Biological Biogen, Inc. $1,095.71 22 2025
Source payment records
KESIMPTA
Normalized: kesimpta
Drug Novartis Pharmaceuticals Corporation $552.28 30 2025
Source payment records
VYEPTI
Normalized: vyepti
Biological Lundbeck LLC $475.29 13 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $473.58 21 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $415.70 18 2025
Source payment records
Ocrevus Zunovo
Normalized: ocrevus zunovo
Biological Genentech USA, Inc. $411.90 17 2025
Source payment records
Mavenclad
Normalized: mavenclad
Drug EMD Serono, Inc. $373.10 3 2025
Source payment records
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $370.39 10 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $330.06 16 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $303.17 14 2025
Source payment records
Ocrevus
Normalized: ocrevus
Biological Genentech USA, Inc., Genentech, Inc. $269.19 5 2025
Source payment records
INFINITY
Normalized: infinity
Device Abbott Laboratories $263.03 2 2025
Source payment records
VYVGART
Normalized: vyvgart
Drug ARGENX US, INC. $247.06 2 2025
Source payment records
Symbravo
Normalized: symbravo
Drug Axsome Therapeutics, Inc. $223.86 7 2025
Source payment records
PONVORY
Normalized: ponvory
Drug Vanda Pharmaceuticals Inc. $205.44 4 2025
Source payment records
AUSTEDO XR
Normalized: austedo xr
Drug Teva Pharmaceuticals USA, Inc. $191.70 5 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $187.31 10 2025
Source payment records
Rystiggo
Normalized: rystiggo
Drug UCB, Inc. $167.90 5 2025
Source payment records
REXULTI
Normalized: rexulti
Drug Otsuka America Pharmaceutical, Inc. $160.72 3 2025
Source payment records
Tascenso ODT
Normalized: tascenso odt
Drug Cycle Pharmaceuticals Inc $143.07 4 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $136.93 6 2025
Source payment records
Zilbrysq
Normalized: zilbrysq
Drug UCB, Inc. $125.00 1 2025
Source payment records
FANAPT
Normalized: fanapt
Drug Vanda Pharmaceuticals Inc. $124.80 1 2025
Source payment records
LYBALVI
Normalized: lybalvi
Drug Alkermes, Inc. $124.18 1 2025
Source payment records
INGREZZA
Normalized: ingrezza
Drug Neurocrine BioSciences, Inc. $123.18 1 2025
Source payment records
Sunosi
Normalized: sunosi
Drug Axsome Therapeutics, Inc. $111.42 1 2025
Source payment records
Bafiertam
Normalized: bafiertam
Drug Cycle Pharmaceuticals Inc $108.69 2 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $107.02 5 2025
Source payment records
PURIFIED CORTROPHIN GEL
Normalized: purified cortrophin gel
Drug ANI Pharmaceuticals, Inc. $76.26 3 2025
Source payment records
VYVGART HYTRULO
Normalized: vyvgart hytrulo
Drug ARGENX US, INC. $53.84 2 2025
Source payment records
Gamunex-C
Normalized: gamunex c
Biological Grifols USA, LLC $50.48 2 2025
Source payment records
COBENFY
Normalized: cobenfy
Drug E.R. Squibb & Sons, L.L.C. $48.39 1 2025
Source payment records
PANZYGA
Normalized: panzyga
Biological Octapharma USA, Inc., PFIZER INC. $45.03 2 2025
Source payment records
ULTOMIRIS
Normalized: ultomiris
Biological Alexion Pharmaceuticals, Inc. $43.20 2 2025
Source payment records
Radicava
Normalized: radicava
Drug Tanabe Pharma America, Inc. $37.76 2 2025
Source payment records
KISUNLA
Normalized: kisunla
Drug Lilly USA, LLC $34.19 2 2025
Source payment records
AQUACEL AG+ EXTRA
Normalized: aquacel ag extra
Device ConvaTec Inc. $27.09 1 2025
Source payment records
WAINUA
Normalized: wainua
Drug AstraZeneca Pharmaceuticals LP $26.47 1 2025
Source payment records
QUTENZA
Normalized: qutenza
Drug Averitas Pharma Inc. $23.60 1 2025
Source payment records
Nayzilam
Normalized: nayzilam
Drug UCB, Inc. $23.20 1 2025
Source payment records
NEURACEQ
Normalized: neuraceq
Drug Life Molecular Imaging Ltd $20.75 1 2025
Source payment records
Fintepla
Normalized: fintepla
Drug UCB, Inc. $20.73 1 2025
Source payment records
OCTAGAM IMMUNE GLOBULIN (HUMAN)
Normalized: octagam immune globulin human
Drug PFIZER INC. $19.61 1 2025
Source payment records
Hizentra
Normalized: hizentra
Biological CSL Behring $17.23 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 74 exact normalized Medicare Part D
Ocrevus
ocrevus
2025 Ocrevus 2024 32 exact normalized Medicare Part D
TYSABRI
tysabri
2025 Tysabri 2024 78
Beneficiary count suppressed
exact normalized Medicare Part D
VUMERITY
vumerity
2025 Vumerity 2024 11
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
36 suppressed by CMS
Biogen, Inc.
Exact reporting entity; no affiliate inference
2025 TYSABRI
open payments reported associated product
CMS Open Payments — General Payments
12612 supporting records · 3572 recipient NPIs · example record 1208299693
Tysabri · 2024
Exact normalized brand match · 1 Part D row
78 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
11 suppressed by CMS
Genentech USA, Inc.
Exact reporting entity; no affiliate inference
2025 Ocrevus
open payments reported associated product
CMS Open Payments — General Payments
3064 supporting records · 1133 recipient NPIs · example record 1211488404
Ocrevus · 2024
Exact normalized brand match · 1 Part D row
32 19
Genentech, Inc.
Exact reporting entity; no affiliate inference
2025 Ocrevus
open payments reported associated product
CMS Open Payments — General Payments
450 supporting records · 299 recipient NPIs · example record 1211488540
Ocrevus · 2024
Exact normalized brand match · 1 Part D row
32 19
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 MAYZENT
open payments reported associated product
CMS Open Payments — General Payments
26 supporting records · 26 recipient NPIs · example record 1200006493
Mayzent · 2024
Exact normalized brand match · 1 Part D row
17 suppressed by CMS
Otsuka America Pharmaceutical, Inc.
Exact reporting entity; no affiliate inference
2025 NUEDEXTA
open payments reported associated product
CMS Open Payments — General Payments
393 supporting records · 285 recipient NPIs · example record 1227268901
Nuedexta · 2024
Exact normalized brand match · 1 Part D row
44 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
74 21

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
BaclofenBaclofen27267
GabapentinGabapentin18347
ClonazepamClonazepam18137
Tizanidine HclTizanidine Hcl13629
ZonisamideZonisamide12333
Dalfampridine ErDalfampridine11813
Amitriptyline HclAmitriptyline Hcl10720
TysabriNatalizumab78suppressed
FingolimodFingolimod Hcl77suppressed
Nurtec OdtRimegepant Sulfate7421
Dimethyl FumarateDimethyl Fumarate66suppressed
OxcarbazepineOxcarbazepine60suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine5322
LevetiracetamLevetiracetam5212
DiazepamDiazepam5013
Glatiramer AcetateGlatiramer Acetate48suppressed
Kesimpta PenOfatumumab46suppressed
LorazepamLorazepam4618
NuedextaDextromethorphan Hbr/Quinidine44suppressed
TopiramateTopiramate41suppressed
ArmodafinilArmodafinil4011
ModafinilModafinil39suppressed
TecfideraDimethyl Fumarate36suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine33suppressed
Duloxetine HclDuloxetine Hcl3315
Eletriptan HbrEletriptan Hydrobromide33suppressed
Aimovig AutoinjectorErenumab-Aooe32suppressed
OcrevusOcrelizumab3219
TeriflunomideTeriflunomide27suppressed
AmantadineAmantadine Hcl24suppressed
Oxybutynin Chloride ErOxybutynin Chloride24suppressed
Emgality PenGalcanezumab-Gnlm23suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl22suppressed
Memantine HclMemantine Hcl22suppressed
Trazodone HclTrazodone Hcl21suppressed
CopaxoneGlatiramer Acetate18suppressed
LamotrigineLamotrigine18suppressed
PregabalinPregabalin18suppressed
Ropinirole HclRopinirole Hcl18suppressed
Sertraline HclSertraline Hcl18suppressed
Sumatriptan SuccinateSumatriptan Succinate18suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine17suppressed
MayzentSiponimod17suppressed
Tolterodine Tartrate ErTolterodine Tartrate17suppressed
GlatopaGlatiramer Acetate16suppressed
Meclizine HclMeclizine Hcl16suppressed
ValacyclovirValacyclovir Hcl16suppressed
AlprazolamAlprazolam15suppressed
RizatriptanRizatriptan Benzoate15suppressed
Tramadol HclTramadol Hcl15suppressed
LisinoprilLisinopril14suppressed
PrimidonePrimidone14suppressed
Verapamil ErVerapamil Hcl14suppressed
Butorphanol TartrateButorphanol Tartrate13suppressed
Propranolol Hcl ErPropranolol Hcl13suppressed
GilenyaFingolimod Hcl12suppressed
VumerityDiroximel 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 $77,297.11 · 318 records TG Therapeutics, Inc. ACTHAR, AQUACEL AG+ EXTRA, AUSTEDO XR, BOTOX, BRIUMVI, Bafiertam, COBENFY, FANAPT, Fintepla, Gamunex-C, Hizentra, INFINITY, INGREZZA, KESIMPTA, KISUNLA, LYBALVI, Leqembi, Mavenclad, NEURACEQ, NURTEC ODT, Nayzilam, OCTAGAM IMMUNE GLOBULIN (HUMAN), Ocrevus, Ocrevus Zunovo, PANZYGA, PONVORY, PURIFIED CORTROPHIN GEL, QULIPTA, QUTENZA, REXULTI, Radicava, Rystiggo, Sunosi, Symbravo, TYSABRI, Tascenso ODT, UBRELVY, ULTOMIRIS, UPLIZNA, VUMERITY, VYEPTI, VYVGART, VYVGART HYTRULO, WAINUA, ZAVZPRET, ZEPOSIA, Zilbrysq 8
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