Healthcare provider profile · identity verified

April Ann Erwin, MD

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Neurology · SALT LAKE CITY, UT · NPI 1194976670

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 April Ann Erwin, MD received $33,138.27 in general payments during 2025 across 214 reported records.

GENZYME CORPORATION accounted for 31.1% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 31 associated products.

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

ABBVIE 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 14 claims for Linzess 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 15 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

$33,138.27

214 reported records · 25 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
GENZYME CORPORATION Unresolved — no canonical attribution shown $10,289.5031.1%32025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $6,886.9820.8%482025
Genentech USA, Inc. Unresolved — no canonical attribution shown $6,819.1520.6%172025
EMD Serono, Inc. Unresolved — no canonical attribution shown $5,150.8915.5%202025
TG Therapeutics, Inc. Unresolved — no canonical attribution shown $1,718.875.2%282025
Biogen, Inc. Unresolved — no canonical attribution shown $498.381.5%172025
ABBVIE INC. Unresolved — no canonical attribution shown $497.681.5%292025
UCB, Inc. Unresolved — no canonical attribution shown $160.530.5%52025
Amgen Inc. Unresolved — no canonical attribution shown $159.530.5%62025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $148.260.5%82025
Mallinckrodt Hospital Products Inc. Unresolved — no canonical attribution shown $147.960.5%52025
ANI Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $96.830.3%42025
Genentech, Inc. Unresolved — no canonical attribution shown $89.330.3%32025
ARGENX US, INC. Unresolved — no canonical attribution shown $89.020.3%32025
PFIZER INC. Unresolved — no canonical attribution shown $63.580.2%42025
Vanda Pharmaceuticals Inc. Unresolved — no canonical attribution shown $54.100.2%22025
Eisai Inc. Unresolved — no canonical attribution shown $46.960.1%22025
Janssen Scientific Affairs, LLC Unresolved — no canonical attribution shown $41.690.1%12025
Lundbeck LLC Unresolved — no canonical attribution shown $34.450.1%22025
Merz Pharmaceuticals, LLC Unresolved — no canonical attribution shown $32.120.1%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $30.340.1%12025
Neurelis, Inc. Neurelis, Inc.
exact · evidence 2025-02-20
$28.070.1%22025
Cycle Pharmaceuticals Inc Unresolved — no canonical attribution shown $19.560.1%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $18.670.1%12025
Celgene Corporation Unresolved — no canonical attribution shown $15.820.1%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Consulting Fee$27,277.508
Food and Beverage$4,426.94201
Travel and Lodging$1,433.835

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
KESIMPTA
Normalized: kesimpta
Drug Novartis Pharmaceuticals Corporation $6,886.98 48 2025
Source payment records
BRIUMVI
Normalized: briumvi
Drug TG Therapeutics, Inc. $1,718.87 28 2025
Source payment records
TYSABRI
Normalized: tysabri
Biological Biogen, Inc. $483.30 16 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $380.32 23 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $354.33 19 2025
Source payment records
VUMERITY
Normalized: vumerity
Drug Biogen, Inc. $296.52 14 2025
Source payment records
Ocrevus
Normalized: ocrevus
Biological Genentech USA, Inc., Genentech, Inc. $260.01 3 2025
Source payment records
Ocrevus Zunovo
Normalized: ocrevus zunovo
Biological Genentech USA, Inc., Genentech, Inc. $240.19 12 2025
Source payment records
UPLIZNA
Normalized: uplizna
Biological Amgen Inc. $159.53 6 2025
Source payment records
ACTHAR
Normalized: acthar
Biological Mallinckrodt Hospital Products Inc. $147.96 5 2025
Source payment records
Rystiggo
Normalized: rystiggo
Drug UCB, Inc. $127.16 4 2025
Source payment records
BOTOX
Normalized: botox
Biological ABBVIE INC. $111.56 8 2025
Source payment records
PURIFIED CORTROPHIN GEL
Normalized: purified cortrophin gel
Drug ANI Pharmaceuticals, Inc. $96.83 4 2025
Source payment records
VYVGART HYTRULO
Normalized: vyvgart hytrulo
Drug ARGENX US, INC. $89.02 3 2025
Source payment records
Symbravo
Normalized: symbravo
Drug Axsome Therapeutics, Inc. $84.17 5 2025
Source payment records
Sunosi
Normalized: sunosi
Drug Axsome Therapeutics, Inc. $64.09 3 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $63.58 4 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $63.58 4 2025
Source payment records
PONVORY
Normalized: ponvory
Drug Vanda Pharmaceuticals Inc. $54.10 2 2025
Source payment records
Leqembi
Normalized: leqembi
Drug Eisai Inc. $46.96 2 2025
Source payment records
VYEPTI
Normalized: vyepti
Biological Lundbeck LLC $34.45 2 2025
Source payment records
Zilbrysq
Normalized: zilbrysq
Drug UCB, Inc. $33.37 1 2025
Source payment records
AMPYRA
Normalized: ampyra
Drug Merz Pharmaceuticals, LLC $32.12 1 2025
Source payment records
INBRIJA
Normalized: inbrija
Drug Merz Pharmaceuticals, LLC $32.12 1 2025
Source payment records
Xeomin
Normalized: xeomin
Biological Merz Pharmaceuticals, LLC $32.12 1 2025
Source payment records
HYQVIA
Normalized: hyqvia
Biological Takeda Pharmaceuticals U.S.A., Inc. $30.34 1 2025
Source payment records
VALTOCO
Normalized: valtoco
Drug Neurelis, Inc. $28.07 2 2025
Source payment records
Bafiertam
Normalized: bafiertam
Drug Cycle Pharmaceuticals Inc $19.56 1 2025
Source payment records
Tascenso ODT
Normalized: tascenso odt
Drug Cycle Pharmaceuticals Inc $19.56 1 2025
Source payment records
KISUNLA
Normalized: kisunla
Drug Lilly USA, LLC $18.67 1 2025
Source payment records
ZEPOSIA
Normalized: zeposia
Drug Celgene Corporation $15.82 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 15
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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
14 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
15 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
BaclofenBaclofen15258
GabapentinGabapentin15059
Dalfampridine ErDalfampridine5613
ModafinilModafinil5216
PregabalinPregabalin5020
DiazepamDiazepam4528
Memantine HclMemantine Hcl4012
Dimethyl FumarateDimethyl Fumarate36suppressed
Dantrolene SodiumDantrolene Sodium35suppressed
LamotrigineLamotrigine32suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen3116
TeriflunomideTeriflunomide31suppressed
Tizanidine HclTizanidine Hcl3011
Zolpidem TartrateZolpidem Tartrate29suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl25suppressed
LevetiracetamLevetiracetam25suppressed
Glatiramer AcetateGlatiramer Acetate24suppressed
Kesimpta PenOfatumumab24suppressed
Donepezil HclDonepezil Hcl23suppressed
TopiramateTopiramate22suppressed
Oxybutynin Chloride ErOxybutynin Chloride21suppressed
CarbamazepineCarbamazepine20suppressed
LorazepamLorazepam20suppressed
Oxybutynin ChlorideOxybutynin Chloride19suppressed
ValacyclovirValacyclovir Hcl19suppressed
ClonazepamClonazepam18suppressed
AlprazolamAlprazolam17suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine17suppressed
Fluoxetine HclFluoxetine Hcl17suppressed
Hydroxyzine HclHydroxyzine Hcl17suppressed
MirtazapineMirtazapine17suppressed
Buspirone HclBuspirone Hcl16suppressed
Duloxetine HclDuloxetine Hcl16suppressed
Sertraline HclSertraline Hcl16suppressed
Nurtec OdtRimegepant Sulfate15suppressed
LinzessLinaclotide14suppressed
Propranolol HclPropranolol Hcl14suppressed
Tramadol HclTramadol Hcl14suppressed
Amitriptyline HclAmitriptyline Hcl13suppressed
Citalopram HbrCitalopram Hydrobromide13suppressed
Midodrine HclMidodrine Hcl13suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl13suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine12suppressed
Methylphenidate HclMethylphenidate Hcl12suppressed
MyrbetriqMirabegron12suppressed
Ropinirole HclRopinirole Hcl12suppressed
Trazodone HclTrazodone Hcl12suppressed
OxcarbazepineOxcarbazepine11suppressed

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 $33,138.27 · 214 records GENZYME CORPORATION ACTHAR, AMPYRA, BOTOX, BRIUMVI, Bafiertam, HYQVIA, INBRIJA, KESIMPTA, KISUNLA, Leqembi, NURTEC ODT, Ocrevus, Ocrevus Zunovo, PONVORY, PURIFIED CORTROPHIN GEL, QULIPTA, Rystiggo, Sunosi, Symbravo, TYSABRI, Tascenso ODT, UBRELVY, UPLIZNA, VALTOCO, VUMERITY, VYEPTI, VYVGART HYTRULO, Xeomin, ZAVZPRET, ZEPOSIA, Zilbrysq 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