Healthcare provider profile · identity verified

John D Chambers, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Cardiovascular Disease · IDAHO FALLS, ID · NPI 1578568242

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 John D Chambers, M.D. received $1,091.53 in general payments during 2025 across 40 reported records.

Medtronic, Inc. accounted for 74.0% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 12 associated products.

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

E.R. Squibb & Sons, L.L.C. reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ELIQUIS as an associated drug or biological on 27956 records involving 14870 distinct recipient NPIs. Public Medicare Part D data also shows 322 claims for Eliquis by this doctor in 2024.

Novartis Pharmaceuticals Corporation reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported ENTRESTO as an associated drug or biological on 9346 records involving 6254 distinct recipient NPIs. Public Medicare Part D data also shows 53 claims for Entresto by this doctor in 2024.

PFIZER 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 ELIQUIS as an associated drug or biological on 87112 records involving 36032 distinct recipient NPIs. Public Medicare Part D data also shows 322 claims for Eliquis by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,091.53

40 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
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$808.2174.0%292025
E.R. Squibb & Sons, L.L.C. Unresolved — no canonical attribution shown $93.658.6%22025
Abbott Laboratories Unresolved — no canonical attribution shown $60.105.5%32025
ABIOMED Unresolved — no canonical attribution shown $35.883.3%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $34.853.2%22025
Edwards Lifesciences Corporation Unresolved — no canonical attribution shown $26.862.5%12025
Philips North America LLC Unresolved — no canonical attribution shown $16.551.5%12025
PFIZER INC. Unresolved — no canonical attribution shown $15.431.4%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,091.5340

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
MICRA
Normalized: micra
Device Medtronic, Inc. $364.24 13 2025
Source payment records
SYMPLICITY G3
Normalized: symplicity g3
Device Medtronic, Inc. $160.23 4 2025
Source payment records
COBALT DR MRI SURESCAN
Normalized: cobalt dr mri surescan
Device Medtronic, Inc. $125.52 6 2025
Source payment records
COREVALVE EVOLUT R
Normalized: corevalve evolut r
Device Medtronic, Inc. $105.43 3 2025
Source payment records
ASSURITY
Normalized: assurity
Device Abbott Laboratories $60.10 3 2025
Source payment records
AURORA EV-ICD MRI SURESCAN
Normalized: aurora ev icd mri surescan
Device Medtronic, Inc. $38.53 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $34.85 2 2025
Source payment records
CAMZYOS
Normalized: camzyos
Drug E.R. Squibb & Sons, L.L.C. $20.97 1 2025
Source payment records
MCOT
Normalized: mcot
Device Philips North America LLC $16.55 1 2025
Source payment records
ELIQUIS
Normalized: eliquis
Drug PFIZER INC. $15.43 1 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $15.43 1 2025
Source payment records
LINQ II
Normalized: linq ii
Device Medtronic, Inc. $14.26 2 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
ELIQUIS
eliquis
2025 Eliquis 2024 322 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
E.R. Squibb & Sons, L.L.C.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
27956 supporting records · 14870 recipient NPIs · example record 1184377713
Eliquis · 2024
Exact normalized brand match · 1 Part D row
322 72
Novartis Pharmaceuticals Corporation
Exact reporting entity; no affiliate inference
2025 ENTRESTO
open payments reported associated product
CMS Open Payments — General Payments
9346 supporting records · 6254 recipient NPIs · example record 1200004797
Entresto · 2024
Exact normalized brand match · 1 Part D row
53 16
PFIZER INC.
Exact reporting entity; no affiliate inference
2025 ELIQUIS
open payments reported associated product
CMS Open Payments — General Payments
87112 supporting records · 36032 recipient NPIs · example record 1228794063
Eliquis · 2024
Exact normalized brand match · 1 Part D row
322 72

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 Calcium462169
EliquisApixaban32272
CarvedilolCarvedilol303111
Metoprolol SuccinateMetoprolol Succinate25793
Losartan PotassiumLosartan Potassium23478
ClopidogrelClopidogrel Bisulfate12968
Metoprolol TartrateMetoprolol Tartrate10130
Levothyroxine SodiumLevothyroxine Sodium9525
EzetimibeEzetimibe9232
LisinoprilLisinopril8933
Pravastatin SodiumPravastatin Sodium8826
Amlodipine BesylateAmlodipine Besylate8331
SimvastatinSimvastatin7329
Potassium ChloridePotassium Chloride7132
BrilintaTicagrelor6929
OmeprazoleOmeprazole6720
FurosemideFurosemide6629
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide6421
HydrochlorothiazideHydrochlorothiazide5621
Amiodarone HclAmiodarone Hcl5318
EntrestoSacubitril/Valsartan5316
Rosuvastatin CalciumRosuvastatin Calcium4817
RamiprilRamipril4012
Pantoprazole SodiumPantoprazole Sodium3711
SpironolactoneSpironolactone3716
Flecainide AcetateFlecainide Acetate3616
Tamsulosin HclTamsulosin Hcl3615
FarxigaDapagliflozin Propanediol3311
Isosorbide Mononitrate ErIsosorbide Mononitrate3212
Prasugrel HclPrasugrel Hcl3214
XareltoRivaroxaban30suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl28suppressed
Warfarin SodiumWarfarin Sodium26suppressed
SotalolSotalol Hcl23suppressed
ValsartanValsartan22suppressed
ChlorthalidoneChlorthalidone18suppressed
AllopurinolAllopurinol17suppressed
Repatha SureclickEvolocumab17suppressed
NitroglycerinNitroglycerin1411
AtenololAtenolol12suppressed
FenofibrateFenofibrate Nanocrystallized12suppressed

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 $1,091.53 · 40 records Medtronic, Inc. ASSURITY, AURORA EV-ICD MRI SURESCAN, CAMZYOS, COBALT DR MRI SURESCAN, COREVALVE EVOLUT R, ELIQUIS, LEQVIO, LINQ II, MCOT, MICRA, NURTEC ODT, SYMPLICITY G3 3
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