Healthcare provider profile · identity verified

Christopher M Herndon, M.D.

Family Practice · DUNCAN, OK · NPI 1578563672

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
Amlodipine Besylate	Amlodipine Besylate	495	125
Lisinopril	Lisinopril	486	131
Atorvastatin Calcium	Atorvastatin Calcium	477	123
Losartan Potassium	Losartan Potassium	435	108
Levothyroxine Sodium	Levothyroxine Sodium	410	94
Simvastatin	Simvastatin	318	82
Omeprazole	Omeprazole	287	75
Gabapentin	Gabapentin	256	73
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	244	35
Metoprolol Tartrate	Metoprolol Tartrate	243	60
Eliquis	Apixaban	209	33
Furosemide	Furosemide	209	58
Metoprolol Succinate	Metoprolol Succinate	207	69
Metformin Hcl	Metformin Hcl	203	60
Potassium Chloride	Potassium Chloride	182	42
Pantoprazole Sodium	Pantoprazole Sodium	167	36
Metformin Hcl Er	Metformin Hcl	166	40
Rosuvastatin Calcium	Rosuvastatin Calcium	154	36
Tamsulosin Hcl	Tamsulosin Hcl	151	40
Alprazolam	Alprazolam	130	20
Albuterol Sulfate Hfa	Albuterol Sulfate	129	34
Ozempic	Semaglutide	124	21
Montelukast Sodium	Montelukast Sodium	113	27
Sertraline Hcl	Sertraline Hcl	112	30
Trulicity	Dulaglutide	106	16
Clopidogrel	Clopidogrel Bisulfate	97	24
Trazodone Hcl	Trazodone Hcl	95	25
Meloxicam	Meloxicam	94	28
Jardiance	Empagliflozin	88	15
Fluoxetine Hcl	Fluoxetine Hcl	82	25
Carvedilol	Carvedilol	79	18
Hydrochlorothiazide	Hydrochlorothiazide	68	18
Allopurinol	Allopurinol	66	16
Esomeprazole Magnesium	Esomeprazole Magnesium	66	15
Duloxetine Hcl	Duloxetine Hcl	65	20
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	59	suppressed
Citalopram Hbr	Citalopram Hydrobromide	53	16
Pravastatin Sodium	Pravastatin Sodium	53	13
Azithromycin	Azithromycin	50	44
Clonazepam	Clonazepam	48	15
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	46	suppressed
Celecoxib	Celecoxib	44	11
Fluticasone Propionate	Fluticasone Propionate	43	20
Toujeo Max Solostar	Insulin Glargine,hum.Rec.Anlog	43	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	41	suppressed
Alendronate Sodium	Alendronate Sodium	39	suppressed
Spironolactone	Spironolactone	38	11
Donepezil Hcl	Donepezil Hcl	36	suppressed
Atenolol	Atenolol	33	suppressed
Finasteride	Finasteride	33	suppressed
Glipizide	Glipizide	32	11
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	31	suppressed
Methylprednisolone	Methylprednisolone	31	30
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	30	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	29	suppressed
Buspirone Hcl	Buspirone Hcl	28	suppressed
Tramadol Hcl	Tramadol Hcl	28	suppressed
Ezetimibe	Ezetimibe	27	suppressed
Tizanidine Hcl	Tizanidine Hcl	27	11
Escitalopram Oxalate	Escitalopram Oxalate	25	suppressed
Pregabalin	Pregabalin	25	suppressed
Estradiol	Estradiol	24	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	24	suppressed
Levetiracetam	Levetiracetam	24	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	24	suppressed
Warfarin Sodium	Warfarin Sodium	24	suppressed
Bydureon Bcise	Exenatide Microspheres	23	suppressed
Lovastatin	Lovastatin	23	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	22	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	22	suppressed
Mounjaro	Tirzepatide	21	suppressed
Benazepril Hcl	Benazepril Hcl	20	suppressed
Ropinirole Hcl	Ropinirole Hcl	20	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	19	suppressed
Famotidine	Famotidine	19	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	19	suppressed
Novolog Flexpen	Insulin Aspart	19	suppressed
Nystatin	Nystatin	19	11
Paroxetine Hcl	Paroxetine Hcl	19	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	19	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	19	11
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Bupropion Hcl Sr	Bupropion Hcl	17	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	17	15
Quetiapine Fumarate	Quetiapine Fumarate	17	suppressed
Valsartan	Valsartan	17	suppressed
Xarelto	Rivaroxaban	17	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	16	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	16	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	16	suppressed
Cephalexin	Cephalexin	15	14
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	15	suppressed
Nifedipine Er	Nifedipine	15	suppressed
Ramipril	Ramipril	15	suppressed
Creon	Lipase/Protease/Amylase	14	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	14	suppressed
Enalapril Maleate	Enalapril Maleate	14	suppressed
Entresto	Sacubitril/Valsartan	14	suppressed
Memantine Hcl	Memantine Hcl	14	suppressed
Bupropion Xl	Bupropion Hcl	13	suppressed
Clonidine Hcl	Clonidine Hcl	13	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	13	suppressed
Fluconazole	Fluconazole	13	suppressed
Glipizide Er	Glipizide	13	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	13	suppressed
Novolin N	Insulin Nph Human Isophane	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Oxycodone Hcl	Oxycodone Hcl	13	suppressed
Prempro	Estrogen,con/M-Progest Acet	13	suppressed
Valacyclovir	Valacyclovir Hcl	13	suppressed
Amiodarone Hcl	Amiodarone Hcl	12	suppressed
Kapspargo Sprinkle	Metoprolol Succinate	12	suppressed
Pindolol	Pindolol	12	suppressed
Pradaxa	Dabigatran Etexilate Mesylate	12	suppressed
Propranolol Hcl	Propranolol Hcl	12	suppressed
Savella	Milnacipran Hcl	12	suppressed
Zonisamide	Zonisamide	12	suppressed
Alfuzosin Hcl Er	Alfuzosin Hcl	11	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	11	suppressed
Novolin R	Insulin Regular, Human	11	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	11	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	11	suppressed
Soliqua 100-33	Insulin Glargine/Lixisenatide	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	11	suppressed
Synthroid	Levothyroxine Sodium	11	suppressed
Ursodiol	Ursodiol	11	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	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