Healthcare provider profile · identity verified

Gary D Wikholm, MD

Family Practice · SANTA PAULA, CA · NPI 1861598526

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	480	116
Amlodipine Besylate	Amlodipine Besylate	342	76
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	329	42
Furosemide	Furosemide	238	39
Levothyroxine Sodium	Levothyroxine Sodium	226	49
Metformin Hcl	Metformin Hcl	221	49
Gabapentin	Gabapentin	208	34
Lisinopril	Lisinopril	201	45
Tamsulosin Hcl	Tamsulosin Hcl	197	43
Metoprolol Succinate	Metoprolol Succinate	195	54
Omeprazole	Omeprazole	189	54
Eliquis	Apixaban	156	18
Losartan Potassium	Losartan Potassium	146	31
Alprazolam	Alprazolam	132	18
Ibuprofen	Ibuprofen	116	26
Sertraline Hcl	Sertraline Hcl	113	28
Levetiracetam	Levetiracetam	112	15
Pantoprazole Sodium	Pantoprazole Sodium	101	20
Albuterol Sulfate Hfa	Albuterol Sulfate	99	31
Hydrochlorothiazide	Hydrochlorothiazide	98	28
Mirtazapine	Mirtazapine	82	17
Tramadol Hcl	Tramadol Hcl	81	18
Januvia	Sitagliptin Phosphate	80	20
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	79	22
Oseltamivir Phosphate	Oseltamivir Phosphate	78	46
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	77	18
Baclofen	Baclofen	71	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	71	20
Benazepril Hcl	Benazepril Hcl	65	18
Carbidopa-Levodopa	Carbidopa/Levodopa	65	suppressed
Ramipril	Ramipril	62	21
Sucralfate	Sucralfate	61	suppressed
Carvedilol	Carvedilol	59	16
Lorazepam	Lorazepam	56	18
Trazodone Hcl	Trazodone Hcl	56	14
Escitalopram Oxalate	Escitalopram Oxalate	55	12
Fluoxetine Hcl	Fluoxetine Hcl	55	14
Rosuvastatin Calcium	Rosuvastatin Calcium	51	16
Divalproex Sodium	Divalproex Sodium	50	11
Zolpidem Tartrate	Zolpidem Tartrate	50	suppressed
Famotidine	Famotidine	49	12
Clonazepam	Clonazepam	48	suppressed
Diclofenac Sodium	Diclofenac Sodium	48	15
Memantine Hcl	Memantine Hcl	48	suppressed
Allopurinol	Allopurinol	46	suppressed
Clopidogrel	Clopidogrel Bisulfate	45	15
Risperidone	Risperidone	45	suppressed
Prednisone	Prednisone	44	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	44	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	43	13
Fentanyl	Fentanyl	41	suppressed
Xarelto	Rivaroxaban	41	suppressed
Alendronate Sodium	Alendronate Sodium	40	12
Cephalexin	Cephalexin	40	23
Hydralazine Hcl	Hydralazine Hcl	40	suppressed
Simvastatin	Simvastatin	39	suppressed
Bumetanide	Bumetanide	38	suppressed
Carisoprodol	Carisoprodol	38	suppressed
Donepezil Hcl	Donepezil Hcl	38	11
Finasteride	Finasteride	38	suppressed
Montelukast Sodium	Montelukast Sodium	38	15
Atenolol	Atenolol	37	suppressed
Ondansetron Hcl	Ondansetron Hcl	37	18
Duloxetine Hcl	Duloxetine Hcl	36	suppressed
Olanzapine	Olanzapine	36	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	36	36
Diazepam	Diazepam	35	suppressed
Lacosamide	Lacosamide	33	suppressed
Meloxicam	Meloxicam	33	11
Potassium Chloride	Potassium Chloride	33	12
Esomeprazole Magnesium	Esomeprazole Magnesium	32	suppressed
Estradiol	Estradiol	32	suppressed
Azithromycin	Azithromycin	31	22
Celecoxib	Celecoxib	30	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	30	suppressed
Spironolactone	Spironolactone	30	suppressed
Valproic Acid	Valproic Acid (As Sodium Salt)	30	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	29	21
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	29	12
Chlorthalidone	Chlorthalidone	28	suppressed
Oxycodone Hcl	Oxycodone Hcl	27	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	25	suppressed
Buspirone Hcl	Buspirone Hcl	24	suppressed
Fluticasone Propionate	Fluticasone Propionate	24	suppressed
Gentamicin Sulfate	Gentamicin Sulfate	24	suppressed
Ozempic	Semaglutide	24	suppressed
Phenytoin	Phenytoin	24	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	24	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	23	suppressed
Midodrine Hcl	Midodrine Hcl	23	suppressed
Paroxetine Hcl	Paroxetine Hcl	23	suppressed
Humalog Kwikpen U-100	Insulin Lispro	22	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	22	suppressed
Oxycontin	Oxycodone Hcl	22	suppressed
Valsartan	Valsartan	22	suppressed
Acyclovir	Acyclovir	21	suppressed
Glimepiride	Glimepiride	21	suppressed
Lovastatin	Lovastatin	21	suppressed
Insulin Glargine Solostar	Insulin Glargine,hum.Rec.Anlog	20	suppressed
Sildenafil Citrate	Sildenafil Citrate	20	suppressed
Benztropine Mesylate	Benztropine Mesylate	19	suppressed
Clotrimazole	Clotrimazole	19	suppressed
Enalapril Maleate	Enalapril Maleate	19	suppressed
Naproxen	Naproxen	19	suppressed
Propranolol Hcl	Propranolol Hcl	19	suppressed
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	18	18
Albuterol Sulfate	Albuterol Sulfate	18	suppressed
Digoxin	Digoxin	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	18	15
Jardiance	Empagliflozin	18	suppressed
Levalbuterol Hcl	Levalbuterol Hcl	18	suppressed
Methocarbamol	Methocarbamol	18	suppressed
Aripiprazole	Aripiprazole	17	suppressed
Fluconazole	Fluconazole	17	suppressed
Glipizide	Glipizide	17	suppressed
Novolin R Flexpen	Insulin Regular, Human	17	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	17	suppressed
Amantadine	Amantadine Hcl	16	suppressed
Colchicine	Colchicine	16	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	16	suppressed
Sodium Chloride	0.9 % Sodium Chloride	16	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	15	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	15	suppressed
Calcium Acetate	Calcium Acetate	15	suppressed
Enoxaparin Sodium	Enoxaparin Sodium	15	suppressed
Paxlovid (Eua)	Nirmatrelvir/Ritonavir	15	15
Amiodarone Hcl	Amiodarone Hcl	14	suppressed
Citalopram Hbr	Citalopram Hydrobromide	14	suppressed
Glipizide Er	Glipizide	14	suppressed
Latanoprost	Latanoprost	14	suppressed
Levetiracetam Er	Levetiracetam	14	suppressed
Promethazine Hcl	Promethazine Hcl	14	suppressed
Vancomycin Hcl	Vancomycin Hcl	14	suppressed
Flecainide Acetate	Flecainide Acetate	13	suppressed
Glyburide	Glyburide	13	suppressed
Hydrocortisone	Hydrocortisone	13	suppressed
Lactulose	Lactulose	13	suppressed
Methenamine Hippurate	Methenamine Hippurate	13	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Santyl	Collagenase Clostridium Hist.	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	13	suppressed
Xifaxan	Rifaximin	13	suppressed
Amoxicillin	Amoxicillin	12	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Butorphanol Tartrate	Butorphanol Tartrate	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Dorzolamide-Timolol	Dorzolamide Hcl/Timolol Maleat	12	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	12	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	12	suppressed
Meclizine Hcl	Meclizine Hcl	12	suppressed
Morphine Sulfate Er	Morphine Sulfate	12	suppressed
Movantik	Naloxegol Oxalate	12	suppressed
Mupirocin	Mupirocin	12	11
Neomycin-Polymyxin-Hc	Neomycin/Polymyxin B/Hydrocort	12	suppressed
Pravastatin Sodium	Pravastatin Sodium	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	11	suppressed
Clonidine	Clonidine	11	suppressed
Dapagliflozin	Dapagliflozin Propanediol	11	suppressed
Entacapone	Entacapone	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Saxagliptin Hcl	Saxagliptin Hcl	11	suppressed
Topiramate	Topiramate	11	suppressed
Valproic Acid	Valproic Acid	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