Healthcare provider profile · identity verified

William G Gillespie, M.D.

Internal Medicine · SALEM, OR · NPI 1497797310

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
Levothyroxine Sodium	Levothyroxine Sodium	1289	275
Atorvastatin Calcium	Atorvastatin Calcium	883	230
Amlodipine Besylate	Amlodipine Besylate	761	188
Losartan Potassium	Losartan Potassium	756	189
Rosuvastatin Calcium	Rosuvastatin Calcium	697	178
Omeprazole	Omeprazole	629	161
Potassium Chloride	Potassium Chloride	601	143
Furosemide	Furosemide	537	132
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	523	111
Eliquis	Apixaban	516	96
Lisinopril	Lisinopril	506	125
Metoprolol Succinate	Metoprolol Succinate	462	114
Trazodone Hcl	Trazodone Hcl	411	96
Gabapentin	Gabapentin	391	95
Duloxetine Hcl	Duloxetine Hcl	390	86
Oxycodone Hcl	Oxycodone Hcl	383	59
Ozempic	Semaglutide	363	59
Metformin Hcl	Metformin Hcl	356	104
Pantoprazole Sodium	Pantoprazole Sodium	304	77
Bupropion Xl	Bupropion Hcl	296	55
Tamsulosin Hcl	Tamsulosin Hcl	292	76
Albuterol Sulfate Hfa	Albuterol Sulfate	287	94
Carvedilol	Carvedilol	275	66
Tizanidine Hcl	Tizanidine Hcl	249	64
Memantine Hcl	Memantine Hcl	243	41
Jardiance	Empagliflozin	239	52
Montelukast Sodium	Montelukast Sodium	238	52
Hydrochlorothiazide	Hydrochlorothiazide	235	68
Metoprolol Tartrate	Metoprolol Tartrate	231	52
Quetiapine Fumarate	Quetiapine Fumarate	221	37
Alprazolam	Alprazolam	217	58
Pravastatin Sodium	Pravastatin Sodium	216	52
Meloxicam	Meloxicam	213	51
Mirtazapine	Mirtazapine	213	43
Tramadol Hcl	Tramadol Hcl	211	60
Sertraline Hcl	Sertraline Hcl	207	50
Baclofen	Baclofen	201	46
Cephalexin	Cephalexin	201	96
Allopurinol	Allopurinol	193	45
Simvastatin	Simvastatin	183	48
Pregabalin	Pregabalin	178	35
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	176	46
Metformin Hcl Er	Metformin Hcl	174	50
Escitalopram Oxalate	Escitalopram Oxalate	171	41
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	170	45
Warfarin Sodium	Warfarin Sodium	170	51
Famotidine	Famotidine	162	33
Fluoxetine Hcl	Fluoxetine Hcl	157	38
Spironolactone	Spironolactone	153	39
Prednisone	Prednisone	150	37
Trulicity	Dulaglutide	140	23
Glimepiride	Glimepiride	136	34
Buspirone Hcl	Buspirone Hcl	135	23
Donepezil Hcl	Donepezil Hcl	135	31
Topiramate	Topiramate	135	22
Doxazosin Mesylate	Doxazosin Mesylate	133	33
Celecoxib	Celecoxib	132	28
Clopidogrel	Clopidogrel Bisulfate	132	33
Nifedipine Er	Nifedipine	131	28
Venlafaxine Hcl Er	Venlafaxine Hcl	128	24
Januvia	Sitagliptin Phosphate	121	23
Clonazepam	Clonazepam	115	22
Nortriptyline Hcl	Nortriptyline Hcl	115	18
Divalproex Sodium	Divalproex Sodium	114	23
Isosorbide Mononitrate Er	Isosorbide Mononitrate	113	33
Atenolol	Atenolol	109	30
Liothyronine Sodium	Liothyronine Sodium	109	24
Hydroxyzine Pamoate	Hydroxyzine Pamoate	107	26
Paroxetine Hcl	Paroxetine Hcl	106	22
Zolpidem Tartrate	Zolpidem Tartrate	105	25
Ipratropium Bromide	Ipratropium Bromide	103	18
Propranolol Hcl Er	Propranolol Hcl	103	24
Bisoprolol Fumarate	Bisoprolol Fumarate	102	26
Solifenacin Succinate	Solifenacin Succinate	101	27
Torsemide	Torsemide	99	24
Buprenorphine-Naloxone	Buprenorphine Hcl/Naloxone Hcl	97	39
Methocarbamol	Methocarbamol	96	24
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	95	26
Hydralazine Hcl	Hydralazine Hcl	95	21
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	92	29
Ezetimibe	Ezetimibe	92	30
Repatha Sureclick	Evolocumab	92	12
Ibandronate Sodium	Ibandronate Sodium	91	27
Mounjaro	Tirzepatide	91	16
Pioglitazone Hcl	Pioglitazone Hcl	91	25
Glipizide Er	Glipizide	90	23
Hydroxyzine Hcl	Hydroxyzine Hcl	88	22
Dexamethasone	Dexamethasone	87	43
Clonidine Hcl	Clonidine Hcl	86	20
Doxycycline Hyclate	Doxycycline Hyclate	86	62
Finasteride	Finasteride	86	24
Chlorthalidone	Chlorthalidone	85	30
Fluconazole	Fluconazole	85	43
Labetalol Hcl	Labetalol Hcl	85	20
Ondansetron Odt	Ondansetron	83	31
Estradiol	Estradiol	81	27
Carbidopa-Levodopa	Carbidopa/Levodopa	80	15
Xarelto	Rivaroxaban	80	19
Buprenorphine Hcl	Buprenorphine Hcl	79	11
Citalopram Hbr	Citalopram Hydrobromide	74	23
Lansoprazole	Lansoprazole	71	14
Alendronate Sodium	Alendronate Sodium	70	19
Azithromycin	Azithromycin	70	39
Nabumetone	Nabumetone	70	24
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	69	17
Triamcinolone Acetonide	Triamcinolone Acetonide	68	35
Ropinirole Hcl	Ropinirole Hcl	67	18
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	63	15
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	62	21
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	60	16
Myrbetriq	Mirabegron	60	13
Promethazine Hcl	Promethazine Hcl	60	16
Synthroid	Levothyroxine Sodium	58	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	57	18
Aripiprazole	Aripiprazole	56	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	56	15
Hydrocortisone	Hydrocortisone	56	12
Lorazepam	Lorazepam	56	16
Nitroglycerin	Nitroglycerin	56	27
Repaglinide	Repaglinide	55	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	54	19
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	53	37
Lamotrigine	Lamotrigine	53	11
Amitriptyline Hcl	Amitriptyline Hcl	52	suppressed
Semglee (Yfgn) Pen	Insulin Glargine-Yfgn	52	11
Risperidone	Risperidone	51	suppressed
Levetiracetam	Levetiracetam	50	suppressed
Propranolol Hcl	Propranolol Hcl	50	14
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	49	16
Morphine Sulfate Er	Morphine Sulfate	49	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	49	14
Olanzapine	Olanzapine	48	suppressed
Fluticasone Propionate	Fluticasone Propionate	46	19
Amiodarone Hcl	Amiodarone Hcl	45	11
Glipizide	Glipizide	45	12
Alfuzosin Hcl Er	Alfuzosin Hcl	44	12
Valacyclovir	Valacyclovir Hcl	44	21
Nystatin	Nystatin	43	18
Prochlorperazine Maleate	Prochlorperazine Maleate	42	18
Rizatriptan	Rizatriptan Benzoate	40	13
Cyanocobalamin Injection	Cyanocobalamin (Vitamin B-12)	39	12
Humalog Kwikpen U-100	Insulin Lispro	39	14
Methotrexate	Methotrexate Sodium	38	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	37	suppressed
Digoxin	Digoxin	36	11
Ondansetron Hcl	Ondansetron Hcl	36	11
Dicyclomine Hcl	Dicyclomine Hcl	35	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	34	suppressed
Meclizine Hcl	Meclizine Hcl	33	16
Testosterone	Testosterone	33	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	32	11
Clindamycin Hcl	Clindamycin Hcl	31	23
Carbidopa-Levodopa Er	Carbidopa/Levodopa	30	suppressed
Fenofibrate	Fenofibrate	30	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	29	17
Hydromorphone Hcl	Hydromorphone Hcl	29	suppressed
Farxiga	Dapagliflozin Propanediol	28	suppressed
Lovastatin	Lovastatin	28	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	27	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	27	22
Doxepin Hcl	Doxepin Hcl	27	suppressed
Flecainide Acetate	Flecainide Acetate	27	suppressed
Amoxicillin	Amoxicillin	26	19
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	26	suppressed
Sucralfate	Sucralfate	26	11
Levemir Flexpen	Insulin Detemir	25	suppressed
Lidocaine	Lidocaine	25	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	25	suppressed
Acarbose	Acarbose	24	suppressed
Armour Thyroid	Thyroid,pork	24	suppressed
Bupropion Hcl Sr	Bupropion Hcl	24	suppressed
Eszopiclone	Eszopiclone	24	suppressed
Irbesartan	Irbesartan	24	suppressed
Ketoconazole	Ketoconazole	24	14
Livalo	Pitavastatin Calcium	24	suppressed
Naproxen	Naproxen	24	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	24	18
Anastrozole	Anastrozole	23	suppressed
Diazepam	Diazepam	23	suppressed
Gemfibrozil	Gemfibrozil	23	suppressed
Insulin Aspart Flexpen	Insulin Aspart	23	suppressed
Mupirocin	Mupirocin	23	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	23	14
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	23	suppressed
Acyclovir	Acyclovir	22	14
Entresto	Sacubitril/Valsartan	22	suppressed
Novolin 70-30 Flexpen	Insulin Nph Hum/Reg Insulin Hm	22	suppressed
Terazosin Hcl	Terazosin Hcl	22	suppressed
Bupropion Hcl	Bupropion Hcl	21	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	21	suppressed
Humulin 70-30	Insulin Nph Hum/Reg Insulin Hm	21	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	21	suppressed
Oxcarbazepine	Oxcarbazepine	21	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	21	suppressed
Valsartan	Valsartan	21	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	20	suppressed
Folic Acid	Folic Acid	20	suppressed
Temazepam	Temazepam	20	suppressed
Varenicline Tartrate	Varenicline Tartrate	20	suppressed
Calcium Acetate	Calcium Acetate	19	suppressed
Candesartan Cilexetil	Candesartan Cilexetil	19	suppressed
Cartia Xt	Diltiazem Hcl	19	suppressed
Clobetasol Propionate	Clobetasol Propionate	19	14
Desvenlafaxine Succinate Er	Desvenlafaxine Succinate	19	suppressed
Levofloxacin	Levofloxacin	19	suppressed
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Arnuity Ellipta	Fluticasone Furoate	18	suppressed
Benazepril Hcl	Benazepril Hcl	18	suppressed
Lurasidone Hcl	Lurasidone Hcl	18	suppressed
Metolazone	Metolazone	18	suppressed
Pen Needle	Pen Needle, Diabetic	18	suppressed
Repatha Pushtronex	Evolocumab	18	suppressed
Trimethoprim	Trimethoprim	18	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	17	suppressed
Atrovent Hfa	Ipratropium Bromide	17	suppressed
Budesonide Ec	Budesonide	17	suppressed
Carbamazepine Er	Carbamazepine	17	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	17	suppressed
Enalapril Maleate	Enalapril Maleate	17	suppressed
Premarin	Estrogens, Conjugated	17	suppressed
Symbicort	Budesonide/Formoterol Fumarate	17	suppressed
Terbinafine Hcl	Terbinafine Hcl	17	12
Ulticare Pen Needle	Pen Needle, Diabetic	17	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	17	suppressed
Colchicine	Colchicine	16	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	16	suppressed
Testosterone Cypionate	Testosterone Cypionate	16	suppressed
Bumetanide	Bumetanide	15	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	15	suppressed
Ibuprofen	Ibuprofen	15	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	15	suppressed
Methimazole	Methimazole	15	suppressed
Naltrexone Hcl	Naltrexone Hcl	15	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	15	15
Telmisartan	Telmisartan	15	suppressed
Buprenorphine	Buprenorphine	14	suppressed
Cholestyramine	Cholestyramine (With Sugar)	14	suppressed
Midodrine Hcl	Midodrine Hcl	14	suppressed
Nurtec Odt	Rimegepant Sulfate	14	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	14	suppressed
Risedronate Sodium	Risedronate Sodium	14	suppressed
Trospium Chloride	Trospium Chloride	14	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	14	suppressed
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	13	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	13	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	13	suppressed
Linzess	Linaclotide	13	suppressed
Lumigan	Bimatoprost	13	suppressed
Nebivolol Hcl	Nebivolol Hcl	13	suppressed
Novolin N Flexpen	Insulin Nph Human Isophane	13	suppressed
Potassium Citrate Er	Potassium Citrate	13	suppressed
Rivastigmine	Rivastigmine	13	suppressed
Azelastine Hcl	Azelastine Hcl	12	suppressed
Betamethasone Dipropionate	Betamethasone Dipropionate	12	suppressed
Bethanechol Chloride	Bethanechol Chloride	12	suppressed
Breo Ellipta	Fluticasone/Vilanterol	12	suppressed
Brilinta	Ticagrelor	12	suppressed
Humulin 70/30 Kwikpen	Insulin Nph Hum/Reg Insulin Hm	12	suppressed
Morphine Sulfate	Morphine Sulfate	12	suppressed
Niacin Er	Niacin	12	suppressed
Novolog Flexpen	Insulin Aspart	12	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	12	suppressed
Single Use Swab	Alcohol Antiseptic Pads	12	suppressed
Sotalol	Sotalol Hcl	12	suppressed
Sure Comfort	Pen Needle, Diabetic	12	suppressed
Tadalafil	Tadalafil	12	suppressed
Tramadol Hcl Er	Tramadol Hcl	12	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	11	suppressed
Calcitriol	Calcitriol	11	suppressed
Ciclopirox	Ciclopirox	11	suppressed
Fentanyl	Fentanyl	11	suppressed
Fluvoxamine Maleate	Fluvoxamine Maleate	11	suppressed
Glyburide	Glyburide	11	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	11	suppressed
Methylphenidate Er	Methylphenidate Hcl	11	suppressed
Movantik	Naloxegol Oxalate	11	suppressed
Nadolol	Nadolol	11	suppressed
Octreotide Acetate	Octreotide Acetate	11	suppressed
Pitavastatin Calcium	Pitavastatin Calcium	11	suppressed
Primidone	Primidone	11	suppressed
Raloxifene Hcl	Raloxifene Hcl	11	suppressed
Trintellix	Vortioxetine Hydrobromide	11	suppressed
Verapamil Er	Verapamil Hcl	11	suppressed
Zafirlukast	Zafirlukast	11	suppressed
Ziprasidone Hcl	Ziprasidone Hcl	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