Healthcare provider profile · identity verified

Ralph V. Greenberg, M.D.

Internal Medicine · DETROIT, MI · NPI 1205904745

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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 Calcium863253
Amlodipine BesylateAmlodipine Besylate500140
Losartan PotassiumLosartan Potassium361102
LisinoprilLisinopril33496
Metformin HclMetformin Hcl33391
Tamsulosin HclTamsulosin Hcl26076
Levothyroxine SodiumLevothyroxine Sodium24472
Nifedipine ErNifedipine22559
Metoprolol TartrateMetoprolol Tartrate18655
OmeprazoleOmeprazole18665
GabapentinGabapentin18549
Metoprolol SuccinateMetoprolol Succinate15448
EliquisApixaban15042
JardianceEmpagliflozin15037
Sertraline HclSertraline Hcl13339
FurosemideFurosemide13248
HydrochlorothiazideHydrochlorothiazide12639
OzempicSemaglutide11726
TrulicityDulaglutide11424
Pantoprazole SodiumPantoprazole Sodium11337
AllopurinolAllopurinol11129
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen9627
AtenololAtenolol9028
Fluticasone PropionateFluticasone Propionate8232
FinasterideFinasteride8126
SimvastatinSimvastatin7627
Potassium ChloridePotassium Chloride7224
AlprazolamAlprazolam6818
AbrysvoRsv Vacc, Pref A And Pref B/Pf6767
Benazepril HclBenazepril Hcl6620
Albuterol Sulfate HfaAlbuterol Sulfate6535
ChlorthalidoneChlorthalidone6422
Lantus SolostarInsulin Glargine,hum.Rec.Anlog6323
SpironolactoneSpironolactone6023
FamotidineFamotidine5717
Rosuvastatin CalciumRosuvastatin Calcium5318
Warfarin SodiumWarfarin Sodium5316
Ventolin HfaAlbuterol Sulfate4927
Metformin Hcl ErMetformin Hcl4712
Fluticasone-SalmeterolFluticasone Propion/Salmeterol4623
Diltiazem 24hr Er (Cd)Diltiazem Hcl4413
GlipizideGlipizide4111
Hydralazine HclHydralazine Hcl4111
ClopidogrelClopidogrel Bisulfate3711
Labetalol HclLabetalol Hcl3711
Trazodone HclTrazodone Hcl3611
XareltoRivaroxaban36suppressed
CarvedilolCarvedilol35suppressed
Pravastatin SodiumPravastatin Sodium3311
JanuviaSitagliptin Phosphate32suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen28suppressed
Triamcinolone AcetonideTriamcinolone Acetonide2818
MethocarbamolMethocarbamol2711
Montelukast SodiumMontelukast Sodium26suppressed
NitroglycerinNitroglycerin2611
Alendronate SodiumAlendronate Sodium25suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate25suppressed
Doxycycline HyclateDoxycycline Hyclate2420
IbuprofenIbuprofen22suppressed
Tiotropium BromideTiotropium Bromide22suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl21suppressed
Citalopram HbrCitalopram Hydrobromide20suppressed
Duloxetine HclDuloxetine Hcl2011
Hydroxyzine HclHydroxyzine Hcl20suppressed
Ipratropium BromideIpratropium Bromide20suppressed
LorazepamLorazepam20suppressed
Novolog FlexpenInsulin Aspart20suppressed
Acetaminophen-CodeineAcetaminophen With Codeine19suppressed
GlimepirideGlimepiride19suppressed
MounjaroTirzepatide18suppressed
Oxybutynin ChlorideOxybutynin Chloride18suppressed
Zolpidem TartrateZolpidem Tartrate17suppressed
LovastatinLovastatin16suppressed
Paroxetine HclParoxetine Hcl16suppressed
Ultra-Fine Short Pen NeedlePen Needle, Diabetic16suppressed
BumetanideBumetanide15suppressed
CephalexinCephalexin1513
FenofibrateFenofibrate Nanocrystallized15suppressed
ShingrixVaricella-Zoster Ge/As01b/Pf1514
Tramadol HclTramadol Hcl15suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid15suppressed
Ultra-Fine Mini Pen NeedlePen Needle, Diabetic15suppressed
ColchicineColchicine1411
EzetimibeEzetimibe14suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter14suppressed
Azelastine HclAzelastine Hcl13suppressed
Boostrix TdapDiphth,pertuss(Acell),tet Vac1313
Bupropion XlBupropion Hcl13suppressed
LevetiracetamLevetiracetam13suppressed
Nano 2nd Gen Pen NeedlePen Needle, Diabetic13suppressed
Propranolol HclPropranolol Hcl13suppressed
LantusInsulin Glargine,hum.Rec.Anlog12suppressed
NaproxenNaproxen12suppressed
HydrocortisoneHydrocortisone11suppressed
LidocaineLidocaine11suppressed
RamiprilRamipril11suppressed

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
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