Healthcare provider profile · identity verified

Rumka Singh, MD

Internal Medicine · SANTA ROSA, CA · NPI 1427132497

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 Calcium519207
LisinoprilLisinopril288125
Levothyroxine SodiumLevothyroxine Sodium281105
Amlodipine BesylateAmlodipine Besylate21389
Losartan PotassiumLosartan Potassium19278
Albuterol Sulfate HfaAlbuterol Sulfate12478
Rosuvastatin CalciumRosuvastatin Calcium11441
GabapentinGabapentin11350
Metoprolol TartrateMetoprolol Tartrate10938
AtenololAtenolol10839
FamotidineFamotidine9841
Alendronate SodiumAlendronate Sodium9037
HydrochlorothiazideHydrochlorothiazide8842
AlvescoCiclesonide8254
SimvastatinSimvastatin7631
AcyclovirAcyclovir7524
Trazodone HclTrazodone Hcl7538
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen7423
Potassium ChloridePotassium Chloride7232
FurosemideFurosemide7133
Fluticasone PropionateFluticasone Propionate5631
Metformin Hcl ErMetformin Hcl5527
Metoprolol SuccinateMetoprolol Succinate5322
Pantoprazole SodiumPantoprazole Sodium5128
Bisoprolol FumarateBisoprolol Fumarate4819
OmeprazoleOmeprazole4830
ClopidogrelClopidogrel Bisulfate4618
PrednisonePrednisone4634
Metformin HclMetformin Hcl4523
Tamsulosin HclTamsulosin Hcl4219
JardianceEmpagliflozin4016
OzempicSemaglutide40suppressed
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide3919
Sertraline HclSertraline Hcl3917
Hydralazine HclHydralazine Hcl3713
AllopurinolAllopurinol3414
Fluoxetine HclFluoxetine Hcl3412
CephalexinCephalexin3230
Pravastatin SodiumPravastatin Sodium3112
Triamcinolone AcetonideTriamcinolone Acetonide3124
Wixela InhubFluticasone Propion/Salmeterol2911
Spiriva RespimatTiotropium Bromide28suppressed
Adacel TdapDiph,pertuss(Acell),tet Vac/Pf2727
LovastatinLovastatin27suppressed
NystatinNystatin2714
PradaxaDabigatran Etexilate Mesylate2715
CarvedilolCarvedilol26suppressed
GlipizideGlipizide25suppressed
Escitalopram OxalateEscitalopram Oxalate2413
MeloxicamMeloxicam2411
Ondansetron OdtOndansetron2412
AmoxicillinAmoxicillin2321
Bupropion XlBupropion Hcl2312
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide2312
AzithromycinAzithromycin2220
BreynaBudesonide/Formoterol Fumarate22suppressed
Doxycycline MonohydrateDoxycycline Monohydrate2219
FinasterideFinasteride22suppressed
Montelukast SodiumMontelukast Sodium21suppressed
EzetimibeEzetimibe20suppressed
Venlafaxine Hcl ErVenlafaxine Hcl20suppressed
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen19suppressed
BaclofenBaclofen18suppressed
Citalopram HbrCitalopram Hydrobromide18suppressed
MirtazapineMirtazapine18suppressed
Stiolto RespimatTiotropium Br/Olodaterol Hcl18suppressed
EliquisApixaban17suppressed
Insulin Glargine-YfgnInsulin Glargine-Yfgn17suppressed
PaxlovidNirmatrelvir/Ritonavir1717
Terazosin HclTerazosin Hcl17suppressed
BuprenorphineBuprenorphine16suppressed
LevetiracetamLevetiracetam16suppressed
CiclopiroxCiclopirox15suppressed
Duloxetine HclDuloxetine Hcl15suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate15suppressed
LorazepamLorazepam1513
MetronidazoleMetronidazole1511
Humulin NInsulin Nph Human Isophane14suppressed
Hydroxyzine HclHydroxyzine Hcl14suppressed
Ibandronate SodiumIbandronate Sodium14suppressed
Naloxone HclNaloxone Hcl1413
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1414
Ondansetron HclOndansetron Hcl14suppressed
Tramadol HclTramadol Hcl14suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav13suppressed
Azelastine HclAzelastine Hcl13suppressed
EstradiolEstradiol1311
HydrocortisoneHydrocortisone13suppressed
Buspirone HclBuspirone Hcl12suppressed
Humulin RInsulin Regular, Human12suppressed
IbuprofenIbuprofen12suppressed
SpironolactoneSpironolactone12suppressed
Trospium ChlorideTrospium Chloride12suppressed
ValacyclovirValacyclovir Hcl12suppressed
BelbucaBuprenorphine Hcl11suppressed
DiazepamDiazepam11suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl11suppressed
Donepezil HclDonepezil Hcl11suppressed
LidocaineLidocaine11suppressed
PrimidonePrimidone11suppressed
Veo Insulin SyringeSyrge-Ndl,ins 0.3 Ml Half Mark11suppressed
Veo Insulin SyringeSyringe-Needle,insulin,0.5 Ml11suppressed

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