Healthcare provider profile · identity verified

Douglas Nitta, MD

Allopathic & Osteopathic Physicians|Family Medicine · FULLERTON, CA · NPI 1912920125

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 Douglas Nitta, MD received $117.04 in general payments during 2025 across 5 reported records.

Bayer Healthcare Pharmaceuticals Inc. accounted for 67.5% of that reported general-payment amount.

The Open Payments records used for this analysis explicitly named 3 associated products.

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

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 67 claims for Jardiance 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 53 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

$117.04

5 reported records · 3 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 $78.9667.5%32025
PFIZER INC. Unresolved — no canonical attribution shown $20.2617.3%12025
Lilly USA, LLC Unresolved — no canonical attribution shown $17.8215.2%12025

What were the payments for?

Payment categories

CategoryAmountRecords
Food and Beverage$117.045

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. $78.96 3 2025
Source payment records
NURTEC ODT
Normalized: nurtec odt
Drug PFIZER INC. $20.26 1 2025
Source payment records
JARDIANCE
Normalized: jardiance
Drug Lilly USA, LLC $17.82 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 67 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
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
67 19
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
53 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
Atorvastatin CalciumAtorvastatin Calcium499141
Amlodipine BesylateAmlodipine Besylate22361
Levothyroxine SodiumLevothyroxine Sodium22062
Losartan PotassiumLosartan Potassium17964
Metformin HclMetformin Hcl17851
LisinoprilLisinopril16952
HydrochlorothiazideHydrochlorothiazide16750
Losartan-HydrochlorothiazideLosartan/Hydrochlorothiazide10336
Albuterol Sulfate HfaAlbuterol Sulfate10117
Pantoprazole SodiumPantoprazole Sodium9325
AzithromycinAzithromycin8760
OmeprazoleOmeprazole8721
Metoprolol SuccinateMetoprolol Succinate8220
SimvastatinSimvastatin8222
Tamsulosin HclTamsulosin Hcl7424
JardianceEmpagliflozin6719
Rosuvastatin CalciumRosuvastatin Calcium6017
EtodolacEtodolac5921
AtenololAtenolol5819
EliquisApixaban53suppressed
GabapentinGabapentin5214
IbuprofenIbuprofen5229
Lisinopril-HydrochlorothiazideLisinopril/Hydrochlorothiazide5016
Triamterene-HydrochlorothiazidTriamterene/Hydrochlorothiazid3912
Ciprofloxacin HclCiprofloxacin Hcl3834
Trazodone HclTrazodone Hcl38suppressed
Metoprolol TartrateMetoprolol Tartrate36suppressed
AllopurinolAllopurinol34suppressed
Escitalopram OxalateEscitalopram Oxalate34suppressed
LansoprazoleLansoprazole34suppressed
Potassium ChloridePotassium Chloride34suppressed
MethylprednisoloneMethylprednisolone3329
Pravastatin SodiumPravastatin Sodium33suppressed
Alendronate SodiumAlendronate Sodium32suppressed
BelsomraSuvorexant3212
Cyclobenzaprine HclCyclobenzaprine Hcl32suppressed
IrbesartanIrbesartan32suppressed
AmoxicillinAmoxicillin3027
Paroxetine HclParoxetine Hcl30suppressed
Warfarin SodiumWarfarin Sodium29suppressed
Benazepril HclBenazepril Hcl28suppressed
FluocinonideFluocinonide2817
CarvedilolCarvedilol26suppressed
Citalopram HbrCitalopram Hydrobromide24suppressed
ClopidogrelClopidogrel Bisulfate24suppressed
MeloxicamMeloxicam24suppressed
Pioglitazone HclPioglitazone Hcl24suppressed
Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip2314
Fluticasone PropionateFluticasone Propionate23suppressed
LatanoprostLatanoprost23suppressed
JanuviaSitagliptin Phosphate22suppressed
FarxigaDapagliflozin Propanediol21suppressed
TestosteroneTestosterone21suppressed
Tramadol HclTramadol Hcl2116
FurosemideFurosemide20suppressed
GemfibrozilGemfibrozil20suppressed
LovastatinLovastatin20suppressed
Venlafaxine Hcl ErVenlafaxine Hcl20suppressed
Oxybutynin Chloride ErOxybutynin Chloride19suppressed
Diphenoxylate-AtropineDiphenoxylate Hcl/Atropine18suppressed
EstradiolEstradiol18suppressed
FinasterideFinasteride18suppressed
Fluoxetine HclFluoxetine Hcl18suppressed
FluconazoleFluconazole17suppressed
Montelukast SodiumMontelukast Sodium16suppressed
Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim1611
LevofloxacinLevofloxacin1511
NaproxenNaproxen15suppressed
Quetiapine FumarateQuetiapine Fumarate15suppressed
Bupropion Hcl SrBupropion Hcl14suppressed
Duloxetine HclDuloxetine Hcl14suppressed
FamotidineFamotidine14suppressed
GlipizideGlipizide14suppressed
ValsartanValsartan14suppressed
AcyclovirAcyclovir13suppressed
AlprazolamAlprazolam13suppressed
LorazepamLorazepam13suppressed
Meclizine HclMeclizine Hcl13suppressed
ValacyclovirValacyclovir Hcl13suppressed
Valsartan-HydrochlorothiazideValsartan/Hydrochlorothiazide13suppressed
Clonidine HclClonidine Hcl12suppressed
Terazosin HclTerazosin Hcl12suppressed
Verapamil SrVerapamil Hcl12suppressed
CelecoxibCelecoxib11suppressed
Diltiazem 24hr Er (Cd)Diltiazem Hcl11suppressed
Hydrocodone-AcetaminophenHydrocodone/Acetaminophen11suppressed
PrednisonePrednisone11suppressed
Sildenafil CitrateSildenafil Citrate11suppressed

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 $117.04 · 5 records Bayer Healthcare Pharmaceuticals Inc. JARDIANCE, Kerendia, NURTEC ODT 2
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