Healthcare provider profile · identity verified

Steffan John May, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine · BOZEMAN, MT · NPI 1194915397

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 Steffan John May, M.D. received $23.75 in general payments during 2025 across 1 reported records.

Astellas Pharma US Inc accounted for 100.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 1 associated product.

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

Payment overview · 2025

General Payments

$23.75

1 reported records · 1 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
Astellas Pharma US Inc Unresolved — no canonical attribution shown $23.75100.0%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$23.751

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
Veozah
Normalized: veozah
Drug Astellas Pharma US Inc $23.75 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

No exact normalized or approved-alias overlap was found in the loaded Part D year. This does not mean the doctor never prescribed the product.

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.

No publishable same-company prescribing overlap was found in the loaded Part D year. This does not mean the doctor never prescribed a drug reported elsewhere by a paying company.

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
Atorvastatin CalciumAtorvastatin Calcium765224
Amlodipine BesylateAmlodipine Besylate508139
Levothyroxine SodiumLevothyroxine Sodium38587
Losartan PotassiumLosartan Potassium28181
Oxycodone HclOxycodone Hcl26137
LisinoprilLisinopril23865
GabapentinGabapentin20258
OmeprazoleOmeprazole17646
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid17047
Alfuzosin Hcl ErAlfuzosin Hcl13637
Rosuvastatin CalciumRosuvastatin Calcium13540
Duloxetine HclDuloxetine Hcl13132
AllopurinolAllopurinol12633
EliquisApixaban11932
Trazodone HclTrazodone Hcl11838
Metoprolol SuccinateMetoprolol Succinate11437
Metformin HclMetformin Hcl11329
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen10725
Zolpidem TartrateZolpidem Tartrate10738
FurosemideFurosemide10630
Tramadol HclTramadol Hcl10433
Montelukast SodiumMontelukast Sodium10227
HydrochlorothiazideHydrochlorothiazide9628
Morphine Sulfate ErMorphine Sulfate9512
Pantoprazole SodiumPantoprazole Sodium8731
XareltoRivaroxaban8722
CarvedilolCarvedilol8619
Tamsulosin HclTamsulosin Hcl8326
Sertraline HclSertraline Hcl8119
ValsartanValsartan7016
PregabalinPregabalin6914
Bupropion XlBupropion Hcl6820
Cyclobenzaprine HclCyclobenzaprine Hcl6312
Metoprolol TartrateMetoprolol Tartrate6219
Warfarin SodiumWarfarin Sodium6216
Potassium ChloridePotassium Chloride5919
AlprazolamAlprazolam5815
LorazepamLorazepam5016
Pravastatin SodiumPravastatin Sodium50suppressed
SpironolactoneSpironolactone4812
FinasterideFinasteride4713
MirtazapineMirtazapine4712
Alendronate SodiumAlendronate Sodium4313
ClonazepamClonazepam4311
Escitalopram OxalateEscitalopram Oxalate4213
MeloxicamMeloxicam3612
CelecoxibCelecoxib3513
SimvastatinSimvastatin35suppressed
SynthroidLevothyroxine Sodium31suppressed
DutasterideDutasteride30suppressed
Propranolol HclPropranolol Hcl30suppressed
ValacyclovirValacyclovir Hcl3019
Venlafaxine Hcl ErVenlafaxine Hcl30suppressed
Albuterol Sulfate HfaAlbuterol Sulfate2915
Oxybutynin Chloride ErOxybutynin Chloride29suppressed
FamotidineFamotidine28suppressed
OxycontinOxycodone Hcl28suppressed
MethocarbamolMethocarbamol27suppressed
PrednisonePrednisone2613
AzithromycinAzithromycin2523
ZaleplonZaleplon25suppressed
DiazepamDiazepam24suppressed
EstradiolEstradiol22suppressed
EzetimibeEzetimibe22suppressed
Hydralazine HclHydralazine Hcl22suppressed
Methadone HclMethadone Hcl22suppressed
Fluoxetine HclFluoxetine Hcl21suppressed
Paroxetine HclParoxetine Hcl21suppressed
Ventolin HfaAlbuterol Sulfate21suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2016
Citalopram HbrCitalopram Hydrobromide20suppressed
Tizanidine HclTizanidine Hcl20suppressed
CarisoprodolCarisoprodol19suppressed
Ondansetron OdtOndansetron19suppressed
Diltiazem HclDiltiazem Hcl18suppressed
FarxigaDapagliflozin Propanediol17suppressed
Metformin Hcl ErMetformin Hcl17suppressed
OzempicSemaglutide17suppressed
Triamcinolone AcetonideTriamcinolone Acetonide1711
Advair HfaFluticasone Propion/Salmeterol16suppressed
AtenololAtenolol16suppressed
Benazepril HclBenazepril Hcl16suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol16suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide16suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl16suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine15suppressed
Autoshield Duo Pen NeedlePen Needle,dual Safety,diabetc14suppressed
Bupropion Hcl SrBupropion Hcl14suppressed
Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine14suppressed
Fluticasone PropionateFluticasone Propionate14suppressed
Nifedipine ErNifedipine14suppressed
Propranolol Hcl ErPropranolol Hcl14suppressed
WegovySemaglutide14suppressed
Buspirone HclBuspirone Hcl13suppressed
Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine13suppressed
FentanylFentanyl13suppressed
JardianceEmpagliflozin13suppressed
NucyntaTapentadol Hcl13suppressed
BelbucaBuprenorphine Hcl12suppressed
Morphine SulfateMorphine Sulfate12suppressed
SucralfateSucralfate12suppressed
Cartia XtDiltiazem Hcl11suppressed
Doxycycline HyclateDoxycycline Hyclate11suppressed
Ipratropium BromideIpratropium Bromide11suppressed
Ropinirole HclRopinirole Hcl11suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim11suppressed

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 $23.75 · 1 records Astellas Pharma US Inc Veozah
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