Healthcare provider profile · identity verified

James G. Trapnell, M.D.

Family Practice · SANTA ROSA, CA · NPI 1073526729

Profile state: partd only 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

We did not find matching Open Payments records for this doctor in 2025.

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

Payment overview · 2025

General Payments

We did not find matching Open Payments records for this doctor in the selected program year.

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.

Analysis 1 · Payment-linked products

Products named in Open Payments records

No payment-linked product analysis is available because no matching General Payment records were found for the selected year.

Public prescribing for products named in payments

There is no explicit payment-product set available for a Part D comparison.

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.

There is no payer-company set available for this comparison.

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

Brand	Generic	Claims	Beneficiaries
Atorvastatin Calcium	Atorvastatin Calcium	1133	305
Levothyroxine Sodium	Levothyroxine Sodium	678	178
Rosuvastatin Calcium	Rosuvastatin Calcium	474	134
Amlodipine Besylate	Amlodipine Besylate	467	132
Losartan Potassium	Losartan Potassium	358	96
Gabapentin	Gabapentin	298	83
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	272	57
Lisinopril	Lisinopril	266	72
Trazodone Hcl	Trazodone Hcl	249	64
Lorazepam	Lorazepam	238	62
Metformin Hcl	Metformin Hcl	234	67
Tamsulosin Hcl	Tamsulosin Hcl	230	66
Benazepril Hcl	Benazepril Hcl	229	63
Simvastatin	Simvastatin	213	58
Omeprazole	Omeprazole	183	56
Pantoprazole Sodium	Pantoprazole Sodium	179	49
Alendronate Sodium	Alendronate Sodium	178	47
Hydrochlorothiazide	Hydrochlorothiazide	173	57
Eliquis	Apixaban	163	42
Sertraline Hcl	Sertraline Hcl	131	40
Albuterol Sulfate Hfa	Albuterol Sulfate	127	51
Metoprolol Succinate	Metoprolol Succinate	125	36
Celecoxib	Celecoxib	117	39
Duloxetine Hcl	Duloxetine Hcl	113	31
Furosemide	Furosemide	104	36
Atenolol	Atenolol	103	27
Tramadol Hcl	Tramadol Hcl	102	37
Bupropion Xl	Bupropion Hcl	101	27
Allopurinol	Allopurinol	100	31
Glipizide Er	Glipizide	93	22
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	93	28
Metformin Hcl Er	Metformin Hcl	91	23
Carvedilol	Carvedilol	90	25
Escitalopram Oxalate	Escitalopram Oxalate	89	29
Metoprolol Tartrate	Metoprolol Tartrate	85	25
Zolpidem Tartrate	Zolpidem Tartrate	83	26
Fluoxetine Hcl	Fluoxetine Hcl	81	19
Valacyclovir	Valacyclovir Hcl	80	35
Valsartan	Valsartan	80	23
Mirtazapine	Mirtazapine	79	19
Famotidine	Famotidine	78	28
Clonazepam	Clonazepam	76	12
Potassium Chloride	Potassium Chloride	76	27
Temazepam	Temazepam	76	17
Fluticasone Propionate	Fluticasone Propionate	73	30
Montelukast Sodium	Montelukast Sodium	71	20
Pregabalin	Pregabalin	70	22
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	68	18
Venlafaxine Hcl Er	Venlafaxine Hcl	68	17
Clopidogrel	Clopidogrel Bisulfate	64	21
Ezetimibe	Ezetimibe	64	21
Alprazolam	Alprazolam	63	19
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	63	17
Pravastatin Sodium	Pravastatin Sodium	63	19
Finasteride	Finasteride	59	18
Jardiance	Empagliflozin	57	19
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	56	46
Paxlovid	Nirmatrelvir/Ritonavir	54	54
Synthroid	Levothyroxine Sodium	51	16
Citalopram Hbr	Citalopram Hydrobromide	49	15
Meloxicam	Meloxicam	47	19
Doxycycline Hyclate	Doxycycline Hyclate	44	33
Quetiapine Fumarate	Quetiapine Fumarate	44	suppressed
Baclofen	Baclofen	43	18
Cephalexin	Cephalexin	42	31
Donepezil Hcl	Donepezil Hcl	42	suppressed
Benazepril-Hydrochlorothiazide	Benazepril/Hydrochlorothiazide	41	11
Diazepam	Diazepam	40	12
Oxybutynin Chloride Er	Oxybutynin Chloride	38	suppressed
Buspirone Hcl	Buspirone Hcl	37	suppressed
Lamotrigine	Lamotrigine	36	suppressed
Xarelto	Rivaroxaban	36	suppressed
Prednisone	Prednisone	35	19
Chlorthalidone	Chlorthalidone	33	suppressed
Lovastatin	Lovastatin	33	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	33	suppressed
Estradiol	Estradiol	32	14
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	32	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	32	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	31	suppressed
Ipratropium Bromide	Ipratropium Bromide	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	29	13
Ketoconazole	Ketoconazole	28	12
Memantine Hcl	Memantine Hcl	28	suppressed
Irbesartan	Irbesartan	27	suppressed
Ondansetron Odt	Ondansetron	27	17
Olmesartan Medoxomil	Olmesartan Medoxomil	26	suppressed
Ropinirole Hcl	Ropinirole Hcl	26	suppressed
Mometasone Furoate	Mometasone Furoate	25	16
Paroxetine Hcl	Paroxetine Hcl	25	suppressed
Amoxicillin	Amoxicillin	24	11
Colchicine	Colchicine	24	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	23	suppressed
Nystatin	Nystatin	23	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	22	suppressed
Premarin	Estrogens, Conjugated	22	suppressed
Spironolactone	Spironolactone	22	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	21	suppressed
Raloxifene Hcl	Raloxifene Hcl	21	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	21	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	20	suppressed
Methadone Hcl	Methadone Hcl	20	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	19	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	18	suppressed
Clonidine Hcl	Clonidine Hcl	18	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	18	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	18	suppressed
Risedronate Sodium	Risedronate Sodium	18	suppressed
Acyclovir	Acyclovir	17	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	17	15
Azelastine Hcl	Azelastine Hcl	17	suppressed
Breo Ellipta	Fluticasone/Vilanterol	17	suppressed
Creon	Lipase/Protease/Amylase	17	suppressed
Ibuprofen	Ibuprofen	17	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	16	suppressed
Hydralazine Hcl	Hydralazine Hcl	16	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	16	suppressed
Liothyronine Sodium	Liothyronine Sodium	16	suppressed
Topiramate	Topiramate	16	suppressed
Doxepin Hcl	Doxepin Hcl	15	suppressed
Hydrocortisone	Hydrocortisone	15	suppressed
Lidocaine	Lidocaine	15	suppressed
Movantik	Naloxegol Oxalate	15	suppressed
Myrbetriq	Mirabegron	15	suppressed
Spiriva Respimat	Tiotropium Bromide	15	suppressed
Terazosin Hcl	Terazosin Hcl	15	suppressed
Verapamil Er	Verapamil Hcl	15	suppressed
Cefuroxime	Cefuroxime Axetil	14	13
Farxiga	Dapagliflozin Propanediol	14	suppressed
Fluconazole	Fluconazole	14	suppressed
Imiquimod	Imiquimod	14	suppressed
Januvia	Sitagliptin Phosphate	14	suppressed
Penicillin V Potassium	Penicillin V Potassium	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	14	suppressed
Aripiprazole	Aripiprazole	13	suppressed
Arnuity Ellipta	Fluticasone Furoate	13	suppressed
Budesonide Ec	Budesonide	13	suppressed
Bupropion Hcl Sr	Bupropion Hcl	13	suppressed
Carbamazepine Er	Carbamazepine	13	suppressed
Cholestyramine	Cholestyramine (With Sugar)	13	suppressed
Dutasteride	Dutasteride	13	suppressed
Morphine Sulfate Er	Morphine Sulfate	13	suppressed
Symbicort	Budesonide/Formoterol Fumarate	13	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	12	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	12	suppressed
Diclofenac Sodium	Diclofenac Sodium	12	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	12	suppressed
Metronidazole	Metronidazole	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	12	suppressed
Testosterone Cypionate	Testosterone Cypionate	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Clobetasol Propionate	Clobetasol Propionate	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	11	suppressed
Fenofibrate	Fenofibrate	11	suppressed
Fosinopril Sodium	Fosinopril Sodium	11	suppressed
Minoxidil	Minoxidil	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Warfarin Sodium	Warfarin Sodium	11	suppressed

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.

Year	General Payments	Main payer	Explicit products	Company overlaps	Part D coverage
2025	—	—	—	—	—
2024	—	—	—	—	Complete

Questions to ask

Questions you could discuss with your doctor

Are there reasonable alternatives I should understand when we discuss treatment options?
How should I interpret the industry-payment records shown here in the context of my care?

These are general questions generated from reviewed templates. They are not personalized medical advice.

Sources and limitations

How to read this page

Payment and Medicare prescribing data can cover different years; every comparison shows both years explicitly.
Part D does not represent a doctor’s entire practice; it excludes many patients and is subject to CMS public-release thresholds.
Company–drug relationships must have an auditable source, a precise relationship type, and a valid evidence period. Unresolved mappings are not published.
Generic drug claims are not attributed to a specific manufacturer without manufacturer-level evidence.
When a source extract is incomplete, missing rows are never treated as proof of no payments or no prescriptions.

Loaded source releases

Dataset	Year	Publication	Source
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