Healthcare provider profile · identity verified

Melissa John, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · MEADOWBROOK, PA · NPI 1013295831

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 Melissa John, M.D. received $850.01 in general payments during 2025 across 46 reported records.

PFIZER INC. accounted for 19.8% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 22 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Abrysvo, Eliquis, Jardiance, Mounjaro, Ozempic, Rybelsus.

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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 40 claims for Synthroid by this doctor in 2024.

Astellas Pharma US 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 Myrbetriq as an associated drug or biological on 16 records involving 16 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Myrbetriq by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 JARDIANCE as an associated drug or biological on 123636 records involving 49438 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Jardiance by this doctor in 2024.

Boehringer Ingelheim Pharmaceuticals, 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 SYNJARDY as an associated drug or biological on 33 records involving 33 distinct recipient NPIs. Public Medicare Part D data also shows 13 claims for Synjardy by this doctor in 2024.

Lilly USA, 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 JARDIANCE as an associated drug or biological on 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 46 claims for Jardiance by this doctor in 2024.

Lilly USA, 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 MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 87 claims for Mounjaro by this doctor in 2024.

Lilly USA, 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 59 claims for Trulicity by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 69 claims for Ozempic by this doctor in 2024.

Novo Nordisk 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Rybelsus 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 ABRYSVO as an associated drug or biological on 55380 records involving 31565 distinct recipient NPIs. Public Medicare Part D data also shows 35 claims for Abrysvo 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 100 claims for Eliquis 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 PAXLOVID as an associated drug or biological on 24465 records involving 15715 distinct recipient NPIs. Public Medicare Part D data also shows 21 claims for Paxlovid by this doctor in 2024.

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

Payment overview · 2025

General Payments

$850.01

46 reported records · 12 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
PFIZER INC. Unresolved — no canonical attribution shown $167.9919.8%132025
Novo Nordisk Inc Unresolved — no canonical attribution shown $153.4918.1%82025
Lilly USA, LLC Unresolved — no canonical attribution shown $140.3816.5%72025
Exact Sciences Corporation Unresolved — no canonical attribution shown $78.719.3%32025
Dexcom, Inc. Unresolved — no canonical attribution shown $67.978.0%22025
Astellas Pharma US Inc Unresolved — no canonical attribution shown $67.337.9%32025
ABBVIE INC. Unresolved — no canonical attribution shown $49.885.9%32025
Inspire Medical Systems, Inc. Unresolved — no canonical attribution shown $44.035.2%22025
Axsome Therapeutics, Inc. Unresolved — no canonical attribution shown $32.973.9%22025
Salix Pharmaceuticals, a division of Bausch Health US, LLC Unresolved — no canonical attribution shown $15.871.9%12025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $15.811.9%12025
GlaxoSmithKline, LLC. Unresolved — no canonical attribution shown $15.581.8%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$850.0146

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
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $140.38 7 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $123.22 7 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $89.06 5 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $81.35 4 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $81.35 4 2025
Source payment records
Cologuard Collection Kit
Normalized: cologuard collection kit
Device Exact Sciences Corporation $78.71 3 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $67.97 2 2025
Source payment records
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $67.33 3 2025
Source payment records
ABRYSVO
Normalized: abrysvo
Biological PFIZER INC. $44.77 6 2025
Source payment records
COMIRNATY
Normalized: comirnaty
Biological PFIZER INC. $44.77 6 2025
Source payment records
PREVNAR 20
Normalized: prevnar 20
Biological PFIZER INC. $44.77 6 2025
Source payment records
INSPIRE
Normalized: inspire
Device Inspire Medical Systems, Inc. $44.03 2 2025
Source payment records
ZAVZPRET
Normalized: zavzpret
Drug PFIZER INC. $34.16 2 2025
Source payment records
Auvelity
Normalized: auvelity
Drug Axsome Therapeutics, Inc. $32.97 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $32.65 2 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $32.65 2 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $17.23 1 2025
Source payment records
XIFAXAN
Normalized: xifaxan
Drug Salix Pharmaceuticals, a division of Bausch Health US, LLC $15.87 1 2025
Source payment records
  • 2025-03-11 · Salix Pharmaceuticals, a division of Bausch Health US, LLC · $15.87 · Open Payments source
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $15.81 1 2025
Source payment records
AREXVY
Normalized: arexvy
Biological GlaxoSmithKline, LLC. $15.58 1 2025
Source payment records
SHINGRIX
Normalized: shingrix
Biological GlaxoSmithKline, LLC. $15.58 1 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $12.15 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
ABRYSVO
abrysvo
2025 Abrysvo 2024 35 exact normalized Medicare Part D
ELIQUIS
eliquis
2025 Eliquis 2024 100 exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 46 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 87
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 69 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 16
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 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
40 12
Astellas Pharma US Inc
Exact reporting entity; no affiliate inference
2025 Myrbetriq
open payments reported associated product
CMS Open Payments — General Payments
16 supporting records · 16 recipient NPIs · example record 1238599014
Myrbetriq · 2024
Exact normalized brand match · 1 Part D row
21 suppressed by CMS
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
123636 supporting records · 49438 recipient NPIs · example record 1221811583
Jardiance · 2024
Exact normalized brand match · 1 Part D row
46 13
Boehringer Ingelheim Pharmaceuticals, Inc.
Exact reporting entity; no affiliate inference
2025 SYNJARDY
open payments reported associated product
CMS Open Payments — General Payments
33 supporting records · 33 recipient NPIs · example record 1222725005
Synjardy · 2024
Exact normalized brand match · 1 Part D row
13 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
46 13
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
87 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
59 12
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
69 13
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ABRYSVO
open payments reported associated product
CMS Open Payments — General Payments
55380 supporting records · 31565 recipient NPIs · example record 1228794147
Abrysvo · 2024
Exact normalized brand match · 1 Part D row
35 35
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
100 25
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 PAXLOVID
open payments reported associated product
CMS Open Payments — General Payments
24465 supporting records · 15715 recipient NPIs · example record 1228794432
Paxlovid · 2024
Exact normalized brand match · 1 Part D row
21 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
Rosuvastatin CalciumRosuvastatin Calcium433117
Atorvastatin CalciumAtorvastatin Calcium385108
Levothyroxine SodiumLevothyroxine Sodium37890
Amlodipine BesylateAmlodipine Besylate32088
Losartan PotassiumLosartan Potassium30889
Metformin HclMetformin Hcl25163
Metoprolol SuccinateMetoprolol Succinate23063
OmeprazoleOmeprazole22363
LisinoprilLisinopril21357
SimvastatinSimvastatin21254
GabapentinGabapentin19362
Pantoprazole SodiumPantoprazole Sodium17946
HydrochlorothiazideHydrochlorothiazide16450
AlprazolamAlprazolam14550
FurosemideFurosemide14441
Tramadol HclTramadol Hcl12222
FamotidineFamotidine11432
Sertraline HclSertraline Hcl11431
CarvedilolCarvedilol10026
EliquisApixaban10025
Escitalopram OxalateEscitalopram Oxalate9729
AtenololAtenolol9526
Fluticasone PropionateFluticasone Propionate8931
MounjaroTirzepatide87suppressed
LorazepamLorazepam8619
EzetimibeEzetimibe8521
Tamsulosin HclTamsulosin Hcl7715
Trazodone HclTrazodone Hcl7714
OzempicSemaglutide6913
ClopidogrelClopidogrel Bisulfate6718
Albuterol Sulfate HfaAlbuterol Sulfate6632
Duloxetine HclDuloxetine Hcl6619
GlimepirideGlimepiride6616
MeloxicamMeloxicam6123
Ipratropium BromideIpratropium Bromide6027
Glipizide ErGlipizide5915
TrulicityDulaglutide5912
Potassium ChloridePotassium Chloride5815
AzithromycinAzithromycin5549
IbuprofenIbuprofen5518
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen5012
MethylprednisoloneMethylprednisolone4945
Ciprofloxacin HclCiprofloxacin Hcl4832
Tizanidine HclTizanidine Hcl4817
AllopurinolAllopurinol4712
PrednisonePrednisone4719
ClonazepamClonazepam46suppressed
JardianceEmpagliflozin4613
Quetiapine FumarateQuetiapine Fumarate44suppressed
Metformin Hcl ErMetformin Hcl4314
Triamcinolone AcetonideTriamcinolone Acetonide4323
Venlafaxine Hcl ErVenlafaxine Hcl43suppressed
Zolpidem TartrateZolpidem Tartrate4312
Breo ElliptaFluticasone/Vilanterol42suppressed
CelecoxibCelecoxib4111
Ondansetron HclOndansetron Hcl4017
SynthroidLevothyroxine Sodium4012
Diclofenac SodiumDiclofenac Sodium38suppressed
Montelukast SodiumMontelukast Sodium3712
AbrysvoRsv Vacc, Pref A And Pref B/Pf3535
Alendronate SodiumAlendronate Sodium35suppressed
Nifedipine ErNifedipine35suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip3418
FarxigaDapagliflozin Propanediol34suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide33suppressed
NaproxenNaproxen3312
Alcohol Prep PadsAlcohol Antiseptic Pads32suppressed
CefuroximeCefuroxime Axetil3230
Metoprolol TartrateMetoprolol Tartrate32suppressed
Bupropion XlBupropion Hcl31suppressed
Levocetirizine DihydrochlorideLevocetirizine Dihydrochloride31suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav3028
DiazepamDiazepam30suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid30suppressed
Novolog FlexpenInsulin Aspart29suppressed
Meclizine HclMeclizine Hcl2814
Oxycodone HclOxycodone Hcl28suppressed
RamiprilRamipril28suppressed
Pravastatin SodiumPravastatin Sodium27suppressed
ValsartanValsartan26suppressed
Pioglitazone HclPioglitazone Hcl25suppressed
XareltoRivaroxaban25suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril24suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen24suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog24suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl23suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine23suppressed
Nebivolol HclNebivolol Hcl23suppressed
Esomeprazole MagnesiumEsomeprazole Magnesium22suppressed
GemtesaVibegron22suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate22suppressed
MirtazapineMirtazapine21suppressed
MyrbetriqMirabegron21suppressed
Nortriptyline HclNortriptyline Hcl21suppressed
PaxlovidNirmatrelvir/Ritonavir2121
Ropinirole HclRopinirole Hcl21suppressed
Budesonide-Formoterol FumarateBudesonide/Formoterol Fumarate20suppressed
GlipizideGlipizide20suppressed
JanumetSitagliptin Phos/Metformin Hcl20suppressed
Paroxetine HclParoxetine Hcl20suppressed
Toujeo Max SolostarInsulin Glargine,hum.Rec.Anlog20suppressed
SymbicortBudesonide/Formoterol Fumarate19suppressed
ChlorthalidoneChlorthalidone18suppressed
Donepezil HclDonepezil Hcl18suppressed
FinasterideFinasteride18suppressed
Fluoxetine HclFluoxetine Hcl18suppressed
LansoprazoleLansoprazole18suppressed
Oxybutynin ChlorideOxybutynin Chloride18suppressed
Oxybutynin Chloride ErOxybutynin Chloride18suppressed
SpironolactoneSpironolactone18suppressed
Citalopram HbrCitalopram Hydrobromide17suppressed
Clonidine HclClonidine Hcl17suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol17suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide17suppressed
Warfarin SodiumWarfarin Sodium17suppressed
Azelastine HclAzelastine Hcl16suppressed
CarisoprodolCarisoprodol16suppressed
Dicyclomine HclDicyclomine Hcl16suppressed
JanuviaSitagliptin Phosphate16suppressed
MupirocinMupirocin16suppressed
RybelsusSemaglutide16suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog16suppressed
Buspirone HclBuspirone Hcl15suppressed
FluconazoleFluconazole1512
LovastatinLovastatin15suppressed
Memantine HclMemantine Hcl15suppressed
Sumatriptan SuccinateSumatriptan Succinate15suppressed
Hydralazine HclHydralazine Hcl14suppressed
IrbesartanIrbesartan14suppressed
Midodrine HclMidodrine Hcl14suppressed
NyamycNystatin14suppressed
Atenolol-ChlorthalidoneAtenolol/Chlorthalidone13suppressed
Clobetasol PropionateClobetasol Propionate13suppressed
ColchicineColchicine13suppressed
DuleraMometasone/Formoterol13suppressed
Enalapril MaleateEnalapril Maleate13suppressed
Ondansetron OdtOndansetron13suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1312
SynjardyEmpagliflozin/Metformin Hcl13suppressed
Ultra-Fine Nano Pen NeedlePen Needle, Diabetic13suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide13suppressed
Amitriptyline HclAmitriptyline Hcl12suppressed
EszopicloneEszopiclone12suppressed
FenofibrateFenofibrate Nanocrystallized12suppressed
Terazosin HclTerazosin Hcl12suppressed
AmoxicillinAmoxicillin11suppressed
DexilantDexlansoprazole11suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl11suppressed
EndocetOxycodone Hcl/Acetaminophen11suppressed
Labetalol HclLabetalol Hcl11suppressed
LoperamideLoperamide Hcl11suppressed
NystatinNystatin11suppressed
Propranolol HclPropranolol Hcl11suppressed
Solifenacin SuccinateSolifenacin Succinate11suppressed
ValacyclovirValacyclovir Hcl11suppressed

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 $850.01 · 46 records PFIZER INC. ABRYSVO, AREXVY, Auvelity, COMIRNATY, Cologuard Collection Kit, Dexcom G6 Transmitter, ELIQUIS, INSPIRE, JARDIANCE, MOUNJARO, NURTEC ODT, Ozempic, PREVNAR 20, QULIPTA, Rybelsus, SHINGRIX, UBRELVY, VRAYLAR, Veozah, Wegovy, XIFAXAN, ZAVZPRET 12
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