Healthcare provider profile · identity verified

David J Woltmann, DO

Allopathic & Osteopathic Physicians|Internal Medicine|Nephrology · LANSING, MI · NPI 1548283567

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 David J Woltmann, DO received $366.01 in general payments during 2025 across 16 reported records.

Calliditas Therapeutics US Inc. accounted for 25.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 10 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Jardiance.

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 11 claims for Jardiance by this doctor in 2024.

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

Payment overview · 2025

General Payments

$366.01

16 reported records · 8 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
Calliditas Therapeutics US Inc. Unresolved — no canonical attribution shown $92.7825.4%32025
Amgen Inc. Unresolved — no canonical attribution shown $71.6819.6%32025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $54.0714.8%22025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $45.8812.5%22025
Ardelyx, Inc. Unresolved — no canonical attribution shown $35.509.7%22025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $34.169.3%22025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $16.724.6%12025
Takeda Pharmaceuticals U.S.A., Inc. Unresolved — no canonical attribution shown $15.224.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$350.7915
Education$15.221

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
TARPEYO
Normalized: tarpeyo
Drug Calliditas Therapeutics US Inc. $92.78 3 2025
Source payment records
KRYSTEXXA
Normalized: krystexxa
Biological Amgen Inc. $55.43 2 2025
Source payment records
Fabhalta
Normalized: fabhalta
Drug Novartis Pharmaceuticals Corporation $45.88 2 2025
Source payment records
IBSRELA
Normalized: ibsrela
Drug Ardelyx, Inc. $35.50 2 2025
Source payment records
VOYXACT
Normalized: voyxact
Drug Otsuka America Pharmaceutical, Inc. $34.48 1 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $34.16 2 2025
Source payment records
JYNARQUE
Normalized: jynarque
Drug Otsuka America Pharmaceutical, Inc. $19.59 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $16.72 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $16.25 1 2025
Source payment records
GATTEX
Normalized: gattex
Drug Takeda Pharmaceuticals U.S.A., Inc. $15.22 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
JARDIANCE
jardiance
2025 Jardiance 2024 11
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
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
11 suppressed by CMS

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
Losartan PotassiumLosartan Potassium11333
Amlodipine BesylateAmlodipine Besylate8631
CalcitriolCalcitriol8124
Potassium ChloridePotassium Chloride7117
Rosuvastatin CalciumRosuvastatin Calcium6419
TorsemideTorsemide6022
Metoprolol SuccinateMetoprolol Succinate5720
BumetanideBumetanide5619
Olmesartan MedoxomilOlmesartan Medoxomil5514
SpironolactoneSpironolactone5517
Atorvastatin CalciumAtorvastatin Calcium5215
Potassium Citrate ErPotassium Citrate4411
FurosemideFurosemide4213
FarxigaDapagliflozin Propanediol3912
Doxazosin MesylateDoxazosin Mesylate3811
Levothyroxine SodiumLevothyroxine Sodium36suppressed
Metoprolol TartrateMetoprolol Tartrate3413
Sodium Polystyrene SulfonateSodium Polystyrene Sulfonate33suppressed
Clonidine HclClonidine Hcl32suppressed
Tamsulosin HclTamsulosin Hcl31suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog28suppressed
LisinoprilLisinopril28suppressed
Tramadol HclTramadol Hcl28suppressed
Trazodone HclTrazodone Hcl28suppressed
OmeprazoleOmeprazole26suppressed
Sevelamer CarbonateSevelamer Carbonate25suppressed
CarvedilolCarvedilol24suppressed
Cinacalcet HclCinacalcet Hcl24suppressed
JanuviaSitagliptin Phosphate24suppressed
AllopurinolAllopurinol23suppressed
Metformin HclMetformin Hcl23suppressed
MinoxidilMinoxidil23suppressed
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid23suppressed
Labetalol HclLabetalol Hcl22suppressed
Sertraline HclSertraline Hcl22suppressed
Zolpidem TartrateZolpidem Tartrate21suppressed
AlprazolamAlprazolam20suppressed
Nifedipine ErNifedipine19suppressed
HydrochlorothiazideHydrochlorothiazide18suppressed
SpsSodium Polystyrene Sulfon/Sorb18suppressed
Hydroxychloroquine SulfateHydroxychloroquine Sulfate17suppressed
AzithromycinAzithromycin1613
Pioglitazone HclPioglitazone Hcl16suppressed
EzetimibeEzetimibe15suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide15suppressed
Amiloride HclAmiloride Hcl14suppressed
Citalopram HbrCitalopram Hydrobromide14suppressed
ColchicineColchicine14suppressed
Pantoprazole SodiumPantoprazole Sodium14suppressed
PrednisonePrednisone14suppressed
ChlorthalidoneChlorthalidone13suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl13suppressed
EliquisApixaban13suppressed
GemfibrozilGemfibrozil13suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen13suppressed
TolvaptanTolvaptan13suppressed
Calcium AcetateCalcium Acetate12suppressed
EplerenoneEplerenone12suppressed
Hydralazine HclHydralazine Hcl12suppressed
Morphine Sulfate ErMorphine Sulfate12suppressed
Thiola EcTiopronin12suppressed
Ezetimibe-SimvastatinEzetimibe/Simvastatin11suppressed
FebuxostatFebuxostat11suppressed
JardianceEmpagliflozin11suppressed
MeloxicamMeloxicam11suppressed
Warfarin SodiumWarfarin Sodium11suppressed

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 $366.01 · 16 records Calliditas Therapeutics US Inc. Fabhalta, GATTEX, IBSRELA, JARDIANCE, JYNARQUE, KRYSTEXXA, Kerendia, REPATHA, TARPEYO, VOYXACT 1
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