Healthcare provider profile · identity verified

David Allen Chappell, M.D.

Allopathic & Osteopathic Physicians|Internal Medicine|Endocrinology, Diabetes & Metabolism · PETALUMA, CA · NPI 1598732463

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 Allen Chappell, M.D. received $1,244.05 in general payments during 2025 across 51 reported records.

Lilly USA, LLC accounted for 19.4% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 20 associated products.

A separate comparison found the same explicitly named product in public Medicare Part D data: Jardiance, Mounjaro, Ozempic, Rybelsus, Synthroid, Wegovy.

ABBVIE 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 ARMOUR THYROID as an associated drug or biological on 50 records involving 11 distinct recipient NPIs. Public Medicare Part D data also shows 61 claims for Armour Thyroid by this doctor in 2024.

ABBVIE 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 CREON as an associated drug or biological on 91561 records involving 20616 distinct recipient NPIs. Public Medicare Part D data also shows 29 claims for Creon by this doctor in 2024.

ABBVIE 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 LINZESS as an associated drug or biological on 87954 records involving 21815 distinct recipient NPIs. Public Medicare Part D data also shows 25 claims for Linzess by this doctor in 2024.

ABBVIE 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 SYNTHROID as an associated drug or biological on 10655 records involving 4881 distinct recipient NPIs. Public Medicare Part D data also shows 60 claims for Synthroid by this doctor in 2024.

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 89 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC 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 47708 records involving 23833 distinct recipient NPIs. Public Medicare Part D data also shows 89 claims for Jardiance by this doctor in 2024.

Lilly USA, LLC reported payments to this doctor in 2025. Across the 2025 Open Payments General Payment records loaded for this analysis, that same reporting entity reported MOUNJARO as an associated drug or biological on 186719 records involving 66436 distinct recipient NPIs. Public Medicare Part D data also shows 216 claims for Mounjaro by this doctor in 2024.

Novo Nordisk 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 Ozempic as an associated drug or biological on 261625 records involving 77793 distinct recipient NPIs. Public Medicare Part D data also shows 39 claims for Ozempic by this doctor in 2024.

Novo Nordisk 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 Rybelsus as an associated drug or biological on 161257 records involving 55409 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Rybelsus by this doctor in 2024.

Novo Nordisk 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 Wegovy as an associated drug or biological on 183056 records involving 75256 distinct recipient NPIs. Public Medicare Part D data also shows 17 claims for Wegovy by this doctor in 2024.

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

Payment overview · 2025

General Payments

$1,244.05

51 reported records · 14 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
Lilly USA, LLC Unresolved — no canonical attribution shown $241.5419.4%102025
Novo Nordisk Inc Unresolved — no canonical attribution shown $224.6818.1%102025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $147.9111.9%62025
Xeris Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $138.3211.1%62025
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $125.0310.1%52025
Amgen Inc. Unresolved — no canonical attribution shown $116.779.4%42025
ABBVIE INC. Unresolved — no canonical attribution shown $82.106.6%32025
Ascendis Pharma Endocrinology Inc Unresolved — no canonical attribution shown $28.302.3%12025
Dexcom, Inc. Unresolved — no canonical attribution shown $27.482.2%12025
Novartis Pharmaceuticals Corporation Unresolved — no canonical attribution shown $27.222.2%12025
Medtronic, Inc. Medtronic, Inc.
exact · evidence 2025-07-22
$26.832.2%12025
RGH Enterprises LLC Unresolved — no canonical attribution shown $21.471.7%12025
Radius Health, Inc. Unresolved — no canonical attribution shown $21.401.7%12025
Abbott Laboratories Unresolved — no canonical attribution shown $15.001.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$1,244.0551

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
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc., Lilly USA, LLC $243.48 10 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $145.97 6 2025
Source payment records
RECORLEV
Normalized: recorlev
Drug Xeris Pharmaceuticals, Inc. $138.32 6 2025
Source payment records
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $125.03 5 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $123.82 5 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $96.38 5 2025
Source payment records
TEPEZZA
Normalized: tepezza
Biological Amgen Inc. $64.12 2 2025
Source payment records
UBRELVY
Normalized: ubrelvy
Drug ABBVIE INC. $60.09 2 2025
Source payment records
QULIPTA
Normalized: qulipta
Drug ABBVIE INC. $56.32 2 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $42.36 2 2025
Source payment records
Wegovy
Normalized: wegovy
Drug Novo Nordisk Inc $31.25 1 2025
Source payment records
Yorvipath
Normalized: yorvipath
Drug Ascendis Pharma Endocrinology Inc $28.30 1 2025
Source payment records
EVENITY
Normalized: evenity
Biological Amgen Inc. $27.88 1 2025
Source payment records
Dexcom G6 Transmitter
Normalized: dexcom g6 transmitter
Medical Supply Dexcom, Inc. $27.48 1 2025
Source payment records
LEQVIO
Normalized: leqvio
Drug Novartis Pharmaceuticals Corporation $27.22 1 2025
Source payment records
MINIMED 780G
Normalized: minimed 780g
Device Medtronic, Inc. $26.83 1 2025
Source payment records
SYNTHROID
Normalized: synthroid
Drug ABBVIE INC. $25.78 1 2025
Source payment records
REPATHA
Normalized: repatha
Biological Amgen Inc. $24.77 1 2025
Source payment records
Tymlos
Normalized: tymlos
Drug Radius Health, Inc. $21.40 1 2025
Source payment records
FREESTYLE LIBRE 3
Normalized: freestyle libre 3
Device Abbott Laboratories $15.00 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 89 exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 216 exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 39 exact normalized Medicare Part D
Rybelsus
rybelsus
2025 Rybelsus 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
SYNTHROID
synthroid
2025 Synthroid 2024 60 exact normalized Medicare Part D
Wegovy
wegovy
2025 Wegovy 2024 17
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
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 ARMOUR THYROID
open payments reported associated product
CMS Open Payments — General Payments
50 supporting records · 11 recipient NPIs · example record 1201517088
Armour Thyroid · 2024
Exact normalized brand match · 1 Part D row
61 11
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 CREON
open payments reported associated product
CMS Open Payments — General Payments
91561 supporting records · 20616 recipient NPIs · example record 1201352608
Creon · 2024
Exact normalized brand match · 1 Part D row
29 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 LINZESS
open payments reported associated product
CMS Open Payments — General Payments
87954 supporting records · 21815 recipient NPIs · example record 1201352608
Linzess · 2024
Exact normalized brand match · 1 Part D row
25 suppressed by CMS
ABBVIE INC.
Exact reporting entity; no affiliate inference
2025 SYNTHROID
open payments reported associated product
CMS Open Payments — General Payments
10655 supporting records · 4881 recipient NPIs · example record 1201352636
Synthroid · 2024
Exact normalized brand match · 1 Part D row
60 14
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
89 21
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 JARDIANCE
open payments reported associated product
CMS Open Payments — General Payments
47708 supporting records · 23833 recipient NPIs · example record 1186464557
Jardiance · 2024
Exact normalized brand match · 1 Part D row
89 21
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 MOUNJARO
open payments reported associated product
CMS Open Payments — General Payments
186719 supporting records · 66436 recipient NPIs · example record 1186464455
Mounjaro · 2024
Exact normalized brand match · 1 Part D row
216 28
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Ozempic
open payments reported associated product
CMS Open Payments — General Payments
261625 supporting records · 77793 recipient NPIs · example record 1188130076
Ozempic · 2024
Exact normalized brand match · 1 Part D row
39 11
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Rybelsus
open payments reported associated product
CMS Open Payments — General Payments
161257 supporting records · 55409 recipient NPIs · example record 1188130076
Rybelsus · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
Novo Nordisk Inc
Exact reporting entity; no affiliate inference
2025 Wegovy
open payments reported associated product
CMS Open Payments — General Payments
183056 supporting records · 75256 recipient NPIs · example record 1188130070
Wegovy · 2024
Exact normalized brand match · 1 Part D row
17 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
MounjaroTirzepatide21628
Potassium ChloridePotassium Chloride21554
Levothyroxine SodiumLevothyroxine Sodium21449
Atorvastatin CalciumAtorvastatin Calcium12535
Rosuvastatin CalciumRosuvastatin Calcium9526
JardianceEmpagliflozin8921
UrsodiolUrsodiol8732
Amlodipine BesylateAmlodipine Besylate8121
Losartan PotassiumLosartan Potassium7722
AlprazolamAlprazolam6613
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen66suppressed
Tamsulosin HclTamsulosin Hcl6416
Armour ThyroidThyroid,pork6111
Zolpidem TartrateZolpidem Tartrate6112
SynthroidLevothyroxine Sodium6014
Trazodone HclTrazodone Hcl5911
Liothyronine SodiumLiothyronine Sodium5815
GabapentinGabapentin5517
Metformin Hcl ErMetformin Hcl5414
EzetimibeEzetimibe4912
HydrocortisoneHydrocortisone47suppressed
Ipratropium BromideIpratropium Bromide47suppressed
Metoprolol SuccinateMetoprolol Succinate4411
Montelukast SodiumMontelukast Sodium43suppressed
Metformin HclMetformin Hcl41suppressed
LisinoprilLisinopril39suppressed
OzempicSemaglutide3911
Escitalopram OxalateEscitalopram Oxalate37suppressed
AzithromycinAzithromycin3627
SimvastatinSimvastatin36suppressed
Albuterol Sulfate HfaAlbuterol Sulfate35suppressed
SpironolactoneSpironolactone33suppressed
CreonLipase/Protease/Amylase29suppressed
Alendronate SodiumAlendronate Sodium27suppressed
Testosterone CypionateTestosterone Cypionate27suppressed
LinzessLinaclotide25suppressed
Pantoprazole SodiumPantoprazole Sodium25suppressed
AllopurinolAllopurinol24suppressed
Donepezil HclDonepezil Hcl24suppressed
Sertraline HclSertraline Hcl24suppressed
TradjentaLinagliptin24suppressed
Dexlansoprazole DrDexlansoprazole23suppressed
EstradiolEstradiol22suppressed
FarxigaDapagliflozin Propanediol22suppressed
Methylphenidate HclMethylphenidate Hcl22suppressed
PregabalinPregabalin22suppressed
LamotrigineLamotrigine21suppressed
ValacyclovirValacyclovir Hcl21suppressed
CelecoxibCelecoxib20suppressed
Ciprofloxacin HclCiprofloxacin Hcl2018
FamotidineFamotidine20suppressed
HydrochlorothiazideHydrochlorothiazide20suppressed
LorazepamLorazepam20suppressed
FurosemideFurosemide19suppressed
Benazepril HclBenazepril Hcl18suppressed
Humalog Mix 75-25 KwikpenInsulin Lispro Protamin/Lispro18suppressed
Ondansetron OdtOndansetron18suppressed
Azelastine HclAzelastine Hcl17suppressed
CarvedilolCarvedilol17suppressed
WegovySemaglutide17suppressed
DiazepamDiazepam14suppressed
HumalogInsulin Lispro14suppressed
Lamictal XrLamotrigine14suppressed
Metoclopramide HclMetoclopramide Hcl14suppressed
Tramadol HclTramadol Hcl14suppressed
Amiloride HclAmiloride Hcl13suppressed
Metoprolol TartrateMetoprolol Tartrate13suppressed
Minocycline HclMinocycline Hcl13suppressed
Terazosin HclTerazosin Hcl13suppressed
TestosteroneTestosterone13suppressed
VascepaIcosapent Ethyl13suppressed
Bupropion XlBupropion Hcl12suppressed
Colesevelam HclColesevelam Hcl12suppressed
EliquisApixaban12suppressed
PaxlovidNirmatrelvir/Ritonavir1212
Insulin LisproInsulin Lispro11suppressed
Klor-Con 10Potassium Chloride11suppressed
Lyumjev Kwikpen U-100Insulin Lispro-Aabc11suppressed
MethocarbamolMethocarbamol11suppressed
Np ThyroidThyroid,pork11suppressed
RybelsusSemaglutide11suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog11suppressed

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 $1,244.05 · 51 records Lilly USA, LLC Dexcom G6 Transmitter, EVENITY, FREESTYLE LIBRE 3, JARDIANCE, Kerendia, LEQVIO, MINIMED 780G, MOUNJARO, Ozempic, QULIPTA, RECORLEV, REPATHA, Rybelsus, SYNTHROID, TEPEZZA, Tymlos, UBRELVY, Wegovy, Yorvipath, ZEPBOUND 10
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