Healthcare provider profile · identity verified

Mark D Spencer, MD

Family Practice · WENDELL, ID · NPI 1497719728

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	351	104
Tamsulosin Hcl	Tamsulosin Hcl	286	82
Amlodipine Besylate	Amlodipine Besylate	275	83
Lisinopril	Lisinopril	271	76
Omeprazole	Omeprazole	271	72
Atorvastatin Calcium	Atorvastatin Calcium	266	69
Gabapentin	Gabapentin	249	61
Pantoprazole Sodium	Pantoprazole Sodium	238	73
Losartan Potassium	Losartan Potassium	227	61
Metoprolol Succinate	Metoprolol Succinate	211	63
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	204	33
Metformin Hcl	Metformin Hcl	202	54
Furosemide	Furosemide	152	51
Potassium Chloride	Potassium Chloride	148	32
Famotidine	Famotidine	145	32
Albuterol Sulfate Hfa	Albuterol Sulfate	143	47
Fluticasone Propionate	Fluticasone Propionate	143	39
Trazodone Hcl	Trazodone Hcl	143	40
Hydrochlorothiazide	Hydrochlorothiazide	134	42
Montelukast Sodium	Montelukast Sodium	126	30
Estradiol	Estradiol	123	29
Meloxicam	Meloxicam	122	35
Eliquis	Apixaban	117	25
Metoprolol Tartrate	Metoprolol Tartrate	113	30
Donepezil Hcl	Donepezil Hcl	110	31
Glimepiride	Glimepiride	106	26
Testosterone Cypionate	Testosterone Cypionate	105	36
Metformin Hcl Er	Metformin Hcl	101	26
Simvastatin	Simvastatin	99	27
Quetiapine Fumarate	Quetiapine Fumarate	98	28
Diclofenac Sodium	Diclofenac Sodium	90	32
Prednisone	Prednisone	89	40
Duloxetine Hcl	Duloxetine Hcl	87	20
Tramadol Hcl	Tramadol Hcl	84	23
Buspirone Hcl	Buspirone Hcl	83	18
Allopurinol	Allopurinol	82	20
Mirtazapine	Mirtazapine	82	24
Citalopram Hbr	Citalopram Hydrobromide	77	25
Sertraline Hcl	Sertraline Hcl	77	16
Finasteride	Finasteride	72	21
Bumetanide	Bumetanide	69	18
Celecoxib	Celecoxib	69	22
Temazepam	Temazepam	69	17
Rosuvastatin Calcium	Rosuvastatin Calcium	65	20
Alendronate Sodium	Alendronate Sodium	63	14
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	61	13
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	60	15
Ropinirole Hcl	Ropinirole Hcl	59	13
Alprazolam	Alprazolam	58	14
Ozempic	Semaglutide	57	11
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	56	40
Azithromycin	Azithromycin	55	25
Fluoxetine Hcl	Fluoxetine Hcl	53	18
Testosterone	Testosterone	53	14
Memantine Hcl	Memantine Hcl	50	12
Ondansetron Odt	Ondansetron	50	18
Bupropion Xl	Bupropion Hcl	49	13
Zolpidem Tartrate	Zolpidem Tartrate	49	15
Atenolol	Atenolol	46	11
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	46	13
Trulicity	Dulaglutide	45	suppressed
Lorazepam	Lorazepam	44	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	43	15
Cefdinir	Cefdinir	42	24
Tizanidine Hcl	Tizanidine Hcl	42	suppressed
Primidone	Primidone	41	suppressed
Solifenacin Succinate	Solifenacin Succinate	41	12
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	40	suppressed
Pregabalin	Pregabalin	40	suppressed
Cefuroxime	Cefuroxime Axetil	39	23
Dicyclomine Hcl	Dicyclomine Hcl	39	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	39	14
Hydralazine Hcl	Hydralazine Hcl	39	suppressed
Lamotrigine	Lamotrigine	39	suppressed
Valsartan	Valsartan	39	11
Venlafaxine Hcl Er	Venlafaxine Hcl	39	suppressed
Baclofen	Baclofen	38	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	38	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	37	26
Triamcinolone Acetonide	Triamcinolone Acetonide	37	22
Clonazepam	Clonazepam	36	11
Clopidogrel	Clopidogrel Bisulfate	36	11
Escitalopram Oxalate	Escitalopram Oxalate	36	11
Diazepam	Diazepam	35	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	35	suppressed
Liothyronine Sodium	Liothyronine Sodium	35	suppressed
Minocycline Hcl	Minocycline Hcl	35	13
Olanzapine	Olanzapine	35	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	34	14
Fluconazole	Fluconazole	33	18
Hydroxyzine Hcl	Hydroxyzine Hcl	33	suppressed
Xarelto	Rivaroxaban	33	suppressed
Lactulose	Lactulose	31	16
Nifedipine Er	Nifedipine	31	14
Ipratropium Bromide	Ipratropium Bromide	30	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	30	suppressed
Metronidazole	Metronidazole	30	24
Carbidopa-Levodopa Er	Carbidopa/Levodopa	29	suppressed
Pravastatin Sodium	Pravastatin Sodium	29	suppressed
Progesterone	Progesterone, Micronized	29	suppressed
Synthroid	Levothyroxine Sodium	29	suppressed
Verapamil Er	Verapamil Hcl	29	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	28	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	28	20
Carbidopa-Levodopa	Carbidopa/Levodopa	27	suppressed
Telmisartan	Telmisartan	27	suppressed
Ibuprofen	Ibuprofen	26	suppressed
Misoprostol	Misoprostol	26	suppressed
Medroxyprogesterone Acetate	Medroxyprogesterone Acetate	25	suppressed
Carvedilol	Carvedilol	24	suppressed
Amoxicillin	Amoxicillin	23	12
Fenofibrate	Fenofibrate	23	suppressed
Haloperidol	Haloperidol	23	suppressed
Levofloxacin	Levofloxacin	23	21
Myrbetriq	Mirabegron	23	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	23	suppressed
Spironolactone	Spironolactone	23	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	22	suppressed
Calcitonin-Salmon	Calcitonin,salmon,synthetic	22	suppressed
Oxycodone Hcl	Oxycodone Hcl	22	suppressed
Trintellix	Vortioxetine Hydrobromide	22	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	21	suppressed
Dexamethasone	Dexamethasone	21	20
Dilt-Xr	Diltiazem Hcl	21	suppressed
Ezetimibe	Ezetimibe	21	suppressed
Pilocarpine Hcl	Pilocarpine Hcl	20	suppressed
Ventolin Hfa	Albuterol Sulfate	20	suppressed
Acyclovir	Acyclovir	19	suppressed
Aripiprazole	Aripiprazole	19	suppressed
Creon	Lipase/Protease/Amylase	19	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	19	suppressed
Jardiance	Empagliflozin	19	suppressed
Metoclopramide Hcl	Metoclopramide Hcl	19	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	19	suppressed
Rizatriptan	Rizatriptan Benzoate	19	suppressed
Trihexyphenidyl Hcl	Trihexyphenidyl Hcl	19	suppressed
Glipizide	Glipizide	18	suppressed
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	18	suppressed
Terbinafine Hcl	Terbinafine Hcl	18	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	17	suppressed
Carbamazepine Er	Carbamazepine	17	suppressed
Pentoxifylline	Pentoxifylline	17	suppressed
Digoxin	Digoxin	16	suppressed
Estradiol (Twice Weekly)	Estradiol	16	suppressed
Irbesartan	Irbesartan	16	suppressed
Paroxetine Hcl	Paroxetine Hcl	16	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	15	suppressed
Galantamine Hbr	Galantamine Hbr	15	suppressed
Methocarbamol	Methocarbamol	15	suppressed
Sucralfate	Sucralfate	15	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	15	suppressed
Breyna	Budesonide/Formoterol Fumarate	14	suppressed
Carbamazepine	Carbamazepine	14	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	14	suppressed
Dulera	Mometasone/Formoterol	14	suppressed
Midodrine Hcl	Midodrine Hcl	14	suppressed
Novolog Flexpen	Insulin Aspart	14	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	14	suppressed
Buprenorphine	Buprenorphine	13	suppressed
Colchicine	Colchicine	13	suppressed
Spiriva Handihaler	Tiotropium Bromide	13	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	12	suppressed
Hydrocortisone	Hydrocortisone	12	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	12	suppressed
Nystatin	Nystatin	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Valacyclovir	Valacyclovir Hcl	12	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	11	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	11	suppressed
Farxiga	Dapagliflozin Propanediol	11	suppressed
Januvia	Sitagliptin Phosphate	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	11	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	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