Healthcare provider profile · identity verified

Henry Siem, M.D.

Family Practice · COLORADO SPRINGS, CO · NPI 1457797995

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 Calcium332108
Levothyroxine SodiumLevothyroxine Sodium27982
Rosuvastatin CalciumRosuvastatin Calcium27485
Amlodipine BesylateAmlodipine Besylate15653
LisinoprilLisinopril15447
Losartan PotassiumLosartan Potassium14954
Tamsulosin HclTamsulosin Hcl12940
Metformin HclMetformin Hcl11242
Metoprolol SuccinateMetoprolol Succinate10135
OmeprazoleOmeprazole9736
GabapentinGabapentin9630
Alendronate SodiumAlendronate Sodium8733
Fluticasone PropionateFluticasone Propionate8539
AllopurinolAllopurinol7127
SimvastatinSimvastatin7120
Pravastatin SodiumPravastatin Sodium7025
Trazodone HclTrazodone Hcl6921
MeloxicamMeloxicam6632
Bupropion XlBupropion Hcl6324
Albuterol Sulfate HfaAlbuterol Sulfate6227
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5719
Escitalopram OxalateEscitalopram Oxalate5521
Pantoprazole SodiumPantoprazole Sodium5427
OzempicSemaglutide5111
Duloxetine HclDuloxetine Hcl4814
HydrochlorothiazideHydrochlorothiazide4718
JardianceEmpagliflozin4714
Olmesartan MedoxomilOlmesartan Medoxomil4616
Potassium ChloridePotassium Chloride4416
FurosemideFurosemide3819
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide3811
Amlodipine-ValsartanAmlodipine Besylate/Valsartan3711
AtenololAtenolol37suppressed
EstradiolEstradiol3715
Sertraline HclSertraline Hcl35suppressed
FinasterideFinasteride34suppressed
Buspirone HclBuspirone Hcl3313
Metformin Hcl ErMetformin Hcl3311
SpironolactoneSpironolactone3313
Triamcinolone AcetonideTriamcinolone Acetonide3318
Diclofenac SodiumDiclofenac Sodium3220
TopiramateTopiramate30suppressed
Warfarin SodiumWarfarin Sodium30suppressed
CarvedilolCarvedilol2913
GlipizideGlipizide2913
ValacyclovirValacyclovir Hcl27suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog2613
MirtazapineMirtazapine2512
Tizanidine HclTizanidine Hcl24suppressed
Citalopram HbrCitalopram Hydrobromide22suppressed
Doxepin HclDoxepin Hcl22suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl22suppressed
Amlodipine Besylate-BenazeprilAmlodipine Besylate/Benazepril21suppressed
Oxybutynin Chloride ErOxybutynin Chloride21suppressed
Trelegy ElliptaFluticasone/Umeclidin/Vilanter21suppressed
Amitriptyline HclAmitriptyline Hcl20suppressed
PrednisonePrednisone2016
Montelukast SodiumMontelukast Sodium19suppressed
EzetimibeEzetimibe18suppressed
MethocarbamolMethocarbamol1811
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1817
Doxazosin MesylateDoxazosin Mesylate17suppressed
EliquisApixaban17suppressed
Estradiol (Once Weekly)Estradiol17suppressed
FamotidineFamotidine17suppressed
SynthroidLevothyroxine Sodium17suppressed
Ventolin HfaAlbuterol Sulfate17suppressed
FenofibrateFenofibrate Nanocrystallized16suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid16suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr15suppressed
Doxycycline HyclateDoxycycline Hyclate1513
Hydroxyzine HclHydroxyzine Hcl15suppressed
Olmesartan-HydrochlorothiazideOlmesartan/Hydrochlorothiazide15suppressed
Amlodipine-OlmesartanAmlodipine Bes/Olmesartan Med14suppressed
Fluoxetine HclFluoxetine Hcl14suppressed
GlimepirideGlimepiride14suppressed
Sildenafil CitrateSildenafil Citrate14suppressed
FenofibrateFenofibrate13suppressed
Ibandronate SodiumIbandronate Sodium13suppressed
LovastatinLovastatin13suppressed
PregabalinPregabalin13suppressed
Spiriva RespimatTiotropium Bromide13suppressed
TelmisartanTelmisartan13suppressed
XareltoRivaroxaban12suppressed
ChlorthalidoneChlorthalidone11suppressed
Cyclobenzaprine HclCyclobenzaprine Hcl11suppressed
Folic AcidFolic Acid11suppressed
Hydralazine HclHydralazine Hcl11suppressed
IbuprofenIbuprofen11suppressed
IrbesartanIrbesartan11suppressed
Naltrexone HclNaltrexone Hcl11suppressed
Paroxetine HclParoxetine Hcl11suppressed
PradaxaDabigatran Etexilate Mesylate11suppressed

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