Healthcare provider profile · identity verified

John P Williams, D.O.

Allopathic & Osteopathic Physicians|Internal Medicine · WILLITS, CA · NPI 1144220369

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 P Williams, D.O. received $373.88 in general payments during 2025 across 18 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 33.6% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 9 associated products.

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

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 23 claims for Synthroid by this doctor in 2024.

Bayer Healthcare 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 Kerendia as an associated drug or biological on 138674 records involving 48458 distinct recipient NPIs. Public Medicare Part D data also shows 16 claims for Kerendia 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 159 claims for Jardiance by this doctor in 2024.

ITI, Inc. (d/b/a Intra-Cellular Therapies, 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 CAPLYTA as an associated drug or biological on 211855 records involving 46143 distinct recipient NPIs. Public Medicare Part D data also shows 11 claims for Caplyta 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 159 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 28 claims for Mounjaro 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 TRULICITY as an associated drug or biological on 71 records involving 57 distinct recipient NPIs. Public Medicare Part D data also shows 31 claims for Trulicity 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 147 claims for Ozempic by this doctor in 2024.

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

Payment overview · 2025

General Payments

$373.88

18 reported records · 7 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
Bayer Healthcare Pharmaceuticals Inc. Unresolved — no canonical attribution shown $125.6033.6%62025
Lilly USA, LLC Unresolved — no canonical attribution shown $106.6028.5%52025
Boehringer Ingelheim Pharmaceuticals, Inc. Unresolved — no canonical attribution shown $52.0413.9%22025
Novo Nordisk Inc Unresolved — no canonical attribution shown $34.599.2%22025
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) Unresolved — no canonical attribution shown $21.525.8%12025
ABBVIE INC. Unresolved — no canonical attribution shown $18.024.8%12025
Otsuka America Pharmaceutical, Inc. Unresolved — no canonical attribution shown $15.514.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$373.8818

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
Kerendia
Normalized: kerendia
Drug Bayer Healthcare Pharmaceuticals Inc. $125.60 6 2025
Source payment records
MOUNJARO
Normalized: mounjaro
Drug Lilly USA, LLC $106.60 5 2025
Source payment records
ZEPBOUND
Normalized: zepbound
Drug Lilly USA, LLC $106.60 5 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Boehringer Ingelheim Pharmaceuticals, Inc. $52.04 2 2025
Source payment records
Ozempic
Normalized: ozempic
Drug Novo Nordisk Inc $34.59 2 2025
Source payment records
CAPLYTA
Normalized: caplyta
Drug ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.) $21.52 1 2025
Source payment records
VRAYLAR
Normalized: vraylar
Drug ABBVIE INC. $18.02 1 2025
Source payment records
ABILIFY MAINTENA
Normalized: abilify maintena
Drug Otsuka America Pharmaceutical, Inc. $15.51 1 2025
Source payment records
Rybelsus
Normalized: rybelsus
Drug Novo Nordisk Inc $13.54 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
CAPLYTA
caplyta
2025 Caplyta 2024 11
Beneficiary count suppressed
exact normalized Medicare Part D
JARDIANCE
jardiance
2025 Jardiance 2024 159 exact normalized Medicare Part D
Kerendia
kerendia
2025 Kerendia 2024 16
Beneficiary count suppressed
exact normalized Medicare Part D
MOUNJARO
mounjaro
2025 Mounjaro 2024 28
Beneficiary count suppressed
exact normalized Medicare Part D
Ozempic
ozempic
2025 Ozempic 2024 147 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 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
23 suppressed by CMS
Bayer Healthcare Pharmaceuticals Inc.
Exact reporting entity; no affiliate inference
2025 Kerendia
open payments reported associated product
CMS Open Payments — General Payments
138674 supporting records · 48458 recipient NPIs · example record 1225434663
Kerendia · 2024
Exact normalized brand match · 1 Part D row
16 suppressed by CMS
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
159 29
ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)
Exact reporting entity; no affiliate inference
2025 CAPLYTA
open payments reported associated product
CMS Open Payments — General Payments
211855 supporting records · 46143 recipient NPIs · example record 1241243071
Caplyta · 2024
Exact normalized brand match · 1 Part D row
11 suppressed by CMS
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
159 29
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
28 suppressed by CMS
Lilly USA, LLC
Exact reporting entity; no affiliate inference
2025 TRULICITY
open payments reported associated product
CMS Open Payments — General Payments
71 supporting records · 57 recipient NPIs · example record 1186464601
Trulicity · 2024
Exact normalized brand match · 1 Part D row
31 suppressed by CMS
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
147 31

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 Calcium44299
Amlodipine BesylateAmlodipine Besylate42987
GabapentinGabapentin39966
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen37767
Levothyroxine SodiumLevothyroxine Sodium30558
Oxycodone HclOxycodone Hcl27735
FurosemideFurosemide27553
Metformin HclMetformin Hcl26166
Potassium ChloridePotassium Chloride24649
Pantoprazole SodiumPantoprazole Sodium22547
Losartan PotassiumLosartan Potassium22154
Tamsulosin HclTamsulosin Hcl21951
Ropinirole HclRopinirole Hcl21430
EliquisApixaban20521
Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen20128
Metoprolol SuccinateMetoprolol Succinate19546
Albuterol Sulfate HfaAlbuterol Sulfate18056
Quetiapine FumarateQuetiapine Fumarate16326
JardianceEmpagliflozin15929
PrednisonePrednisone15668
LisinoprilLisinopril15045
OzempicSemaglutide14731
ClopidogrelClopidogrel Bisulfate14331
MirtazapineMirtazapine13633
Alendronate SodiumAlendronate Sodium13325
OmeprazoleOmeprazole13331
HydrochlorothiazideHydrochlorothiazide12727
Trazodone HclTrazodone Hcl12325
Montelukast SodiumMontelukast Sodium11623
Sertraline HclSertraline Hcl9515
Tramadol HclTramadol Hcl9222
Duloxetine HclDuloxetine Hcl9121
FamotidineFamotidine8315
Tizanidine HclTizanidine Hcl8319
Cyclobenzaprine HclCyclobenzaprine Hcl8117
MeloxicamMeloxicam8120
CarvedilolCarvedilol8020
Diltiazem 24hr Er (Cd)Diltiazem Hcl8013
EzetimibeEzetimibe7914
BaclofenBaclofen7117
CelecoxibCelecoxib6918
Amitriptyline HclAmitriptyline Hcl6813
SpironolactoneSpironolactone6712
Bupropion Hcl SrBupropion Hcl66suppressed
AllopurinolAllopurinol61suppressed
Metoprolol TartrateMetoprolol Tartrate5811
Escitalopram OxalateEscitalopram Oxalate5717
LorazepamLorazepam5413
Trelegy ElliptaFluticasone/Umeclidin/Vilanter52suppressed
Venlafaxine Hcl ErVenlafaxine Hcl5214
IbuprofenIbuprofen5116
Oxybutynin Chloride ErOxybutynin Chloride5111
Fluticasone PropionateFluticasone Propionate4716
DiazepamDiazepam4613
Metformin Hcl ErMetformin Hcl46suppressed
Methadone HclMethadone Hcl46suppressed
PregabalinPregabalin46suppressed
Anoro ElliptaUmeclidinium Brm/Vilanterol Tr45suppressed
Citalopram HbrCitalopram Hydrobromide4514
Hydroxyzine HclHydroxyzine Hcl4514
Tolterodine Tartrate ErTolterodine Tartrate45suppressed
LevetiracetamLevetiracetam43suppressed
Doxycycline HyclateDoxycycline Hyclate4231
Nortriptyline HclNortriptyline Hcl42suppressed
Fluticasone-SalmeterolFluticasone Propion/Salmeterol41suppressed
Lurasidone HclLurasidone Hcl40suppressed
Metoclopramide HclMetoclopramide Hcl40suppressed
Diclofenac SodiumDiclofenac Sodium3912
Ipratropium-AlbuterolIpratropium/Albuterol Sulfate38suppressed
Rosuvastatin CalciumRosuvastatin Calcium3812
FinasterideFinasteride37suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim3730
Ventolin HfaAlbuterol Sulfate3712
AzithromycinAzithromycin3632
Donepezil HclDonepezil Hcl36suppressed
Morphine Sulfate ErMorphine Sulfate36suppressed
Amiodarone HclAmiodarone Hcl35suppressed
Benazepril HclBenazepril Hcl35suppressed
Triamcinolone AcetonideTriamcinolone Acetonide3517
Clonidine HclClonidine Hcl3412
LansoprazoleLansoprazole34suppressed
Breo ElliptaFluticasone/Vilanterol33suppressed
Carbidopa-LevodopaCarbidopa/Levodopa32suppressed
Memantine HclMemantine Hcl32suppressed
PrimidonePrimidone32suppressed
Methenamine HippurateMethenamine Hippurate31suppressed
Propranolol Hcl ErPropranolol Hcl31suppressed
TrulicityDulaglutide31suppressed
Buprenorphine HclBuprenorphine Hcl30suppressed
Fluoxetine HclFluoxetine Hcl30suppressed
LevofloxacinLevofloxacin3023
Pioglitazone HclPioglitazone Hcl30suppressed
SimvastatinSimvastatin30suppressed
Solifenacin SuccinateSolifenacin Succinate30suppressed
Calcitonin-SalmonCalcitonin,salmon,synthetic29suppressed
Lantus SolostarInsulin Glargine,hum.Rec.Anlog29suppressed
Buspirone HclBuspirone Hcl28suppressed
Divalproex SodiumDivalproex Sodium28suppressed
MounjaroTirzepatide28suppressed
NitrofurantoinNitrofurantoin Macrocrystal28suppressed
Warfarin SodiumWarfarin Sodium28suppressed
ClonazepamClonazepam27suppressed
Enalapril MaleateEnalapril Maleate27suppressed
Butalbital-Acetaminophen-CaffeButalb/Acetaminophen/Caffeine26suppressed
MetolazoneMetolazone26suppressed
TopiramateTopiramate26suppressed
Vitamin D2Ergocalciferol (Vitamin D2)26suppressed
Doxazosin MesylateDoxazosin Mesylate25suppressed
Isosorbide Mononitrate ErIsosorbide Mononitrate25suppressed
SucralfateSucralfate25suppressed
Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav2422
MovantikNaloxegol Oxalate24suppressed
Ondansetron OdtOndansetron2412
Paroxetine HclParoxetine Hcl24suppressed
Spiriva HandihalerTiotropium Bromide24suppressed
Testosterone CypionateTestosterone Cypionate24suppressed
Bupropion XlBupropion Hcl23suppressed
SynthroidLevothyroxine Sodium23suppressed
Arnuity ElliptaFluticasone Furoate22suppressed
ColchicineColchicine21suppressed
Fludrocortisone AcetateFludrocortisone Acetate21suppressed
MethimazoleMethimazole21suppressed
AlprazolamAlprazolam20suppressed
AripiprazoleAripiprazole20suppressed
ChlorthalidoneChlorthalidone20suppressed
Insulin Aspart FlexpenInsulin Aspart19suppressed
Pramipexole DihydrochloridePramipexole Di-Hcl19suppressed
Advair DiskusFluticasone Propion/Salmeterol18suppressed
GemfibrozilGemfibrozil18suppressed
MupirocinMupirocin18suppressed
Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst1812
RisperidoneRisperidone18suppressed
Basaglar Kwikpen U-100Insulin Glargine,hum.Rec.Anlog17suppressed
Ipratropium BromideIpratropium Bromide17suppressed
LatanoprostLatanoprost17suppressed
Meclizine HclMeclizine Hcl17suppressed
Pravastatin SodiumPravastatin Sodium17suppressed
Sumatriptan SuccinateSumatriptan Succinate17suppressed
SymbicortBudesonide/Formoterol Fumarate17suppressed
DigoxinDigoxin16suppressed
KerendiaFinerenone16suppressed
KetoconazoleKetoconazole16suppressed
Acetaminophen-CodeineAcetaminophen With Codeine15suppressed
BumetanideBumetanide15suppressed
Ciprofloxacin HclCiprofloxacin Hcl1511
FluconazoleFluconazole1511
LactuloseLactulose15suppressed
NaproxenNaproxen15suppressed
Oxybutynin ChlorideOxybutynin Chloride15suppressed
Tresiba Flextouch U-200Insulin Degludec15suppressed
AtenololAtenolol14suppressed
Bupropion HclBupropion Hcl14suppressed
Butalbital-Aspirin-CaffeineButalbital/Aspirin/Caffeine14suppressed
CephalexinCephalexin1411
Clindamycin HclClindamycin Hcl14suppressed
DutasterideDutasteride14suppressed
GlimepirideGlimepiride14suppressed
MyrbetriqMirabegron14suppressed
Naratriptan HclNaratriptan Hcl14suppressed
Silver SulfadiazineSilver Sulfadiazine14suppressed
Toujeo SolostarInsulin Glargine,hum.Rec.Anlog14suppressed
Atrovent HfaIpratropium Bromide13suppressed
Combivent RespimatIpratropium/Albuterol Sulfate13suppressed
Klor-Con M20Potassium Chloride13suppressed
MethocarbamolMethocarbamol13suppressed
OlanzapineOlanzapine13suppressed
TorsemideTorsemide13suppressed
Valproic AcidValproic Acid (As Sodium Salt)13suppressed
Invega SustennaPaliperidone Palmitate12suppressed
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide12suppressed
LovastatinLovastatin12suppressed
Spiriva RespimatTiotropium Bromide12suppressed
Valproic AcidValproic Acid12suppressed
Bisoprolol FumarateBisoprolol Fumarate11suppressed
CaplytaLumateperone Tosylate11suppressed
Ondansetron HclOndansetron Hcl11suppressed
Penicillin V PotassiumPenicillin V Potassium11suppressed

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 $373.88 · 18 records Bayer Healthcare Pharmaceuticals Inc. ABILIFY MAINTENA, CAPLYTA, JARDIANCE, Kerendia, MOUNJARO, Ozempic, Rybelsus, VRAYLAR, ZEPBOUND 8
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