Healthcare provider profile · identity verified

Randolph A Clark, M.D.

Internal Medicine · PHOENIX, AZ · NPI 1568456036

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	355	101
Atorvastatin Calcium	Atorvastatin Calcium	320	102
Furosemide	Furosemide	212	60
Eliquis	Apixaban	209	64
Lisinopril	Lisinopril	208	77
Trazodone Hcl	Trazodone Hcl	201	59
Gabapentin	Gabapentin	189	69
Amlodipine Besylate	Amlodipine Besylate	187	72
Sertraline Hcl	Sertraline Hcl	159	40
Pantoprazole Sodium	Pantoprazole Sodium	158	56
Metoprolol Succinate	Metoprolol Succinate	132	39
Divalproex Sodium	Divalproex Sodium	125	41
Quetiapine Fumarate	Quetiapine Fumarate	111	32
Tamsulosin Hcl	Tamsulosin Hcl	108	47
Metformin Hcl	Metformin Hcl	107	41
Olanzapine	Olanzapine	103	18
Potassium Chloride	Potassium Chloride	101	43
Losartan Potassium	Losartan Potassium	100	38
Simvastatin	Simvastatin	93	22
Omeprazole	Omeprazole	92	27
Mirtazapine	Mirtazapine	84	26
Levetiracetam	Levetiracetam	77	21
Escitalopram Oxalate	Escitalopram Oxalate	70	22
Duloxetine Hcl	Duloxetine Hcl	69	22
Metoprolol Tartrate	Metoprolol Tartrate	69	33
Donepezil Hcl	Donepezil Hcl	63	26
Carvedilol	Carvedilol	62	26
Famotidine	Famotidine	60	21
Spironolactone	Spironolactone	60	19
Latanoprost	Latanoprost	55	14
Hydralazine Hcl	Hydralazine Hcl	54	17
Rosuvastatin Calcium	Rosuvastatin Calcium	52	15
Fluoxetine Hcl	Fluoxetine Hcl	48	14
Lactulose	Lactulose	48	12
Montelukast Sodium	Montelukast Sodium	47	20
Risperidone	Risperidone	46	13
Albuterol Sulfate Hfa	Albuterol Sulfate	44	27
Valproic Acid	Valproic Acid (As Sodium Salt)	44	suppressed
Clopidogrel	Clopidogrel Bisulfate	43	18
Clonazepam	Clonazepam	39	suppressed
Finasteride	Finasteride	39	15
Hydrochlorothiazide	Hydrochlorothiazide	39	13
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	38	20
Memantine Hcl	Memantine Hcl	37	15
Tramadol Hcl	Tramadol Hcl	37	17
Citalopram Hbr	Citalopram Hydrobromide	33	17
Prednisone	Prednisone	33	14
Jardiance	Empagliflozin	32	suppressed
Paroxetine Hcl	Paroxetine Hcl	31	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	30	suppressed
Lorazepam	Lorazepam	28	14
Invega Sustenna	Paliperidone Palmitate	27	suppressed
Lubiprostone	Lubiprostone	27	suppressed
Metformin Hcl Er	Metformin Hcl	26	13
Pravastatin Sodium	Pravastatin Sodium	26	suppressed
Xarelto	Rivaroxaban	26	11
Bumetanide	Bumetanide	25	suppressed
Risperdal Consta	Risperidone Microspheres	25	suppressed
Topiramate	Topiramate	25	suppressed
Clonidine Hcl	Clonidine Hcl	24	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	24	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	24	suppressed
Lovastatin	Lovastatin	24	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	23	14
Nifedipine Er	Nifedipine	22	suppressed
Ondansetron Odt	Ondansetron	22	suppressed
Oxycodone Hcl	Oxycodone Hcl	22	14
Amiodarone Hcl	Amiodarone Hcl	21	suppressed
Aripiprazole	Aripiprazole	21	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	21	20
Oxybutynin Chloride Er	Oxybutynin Chloride	21	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	21	suppressed
Pregabalin	Pregabalin	21	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	20	suppressed
Cephalexin	Cephalexin	20	16
Divalproex Sodium Er	Divalproex Sodium	20	suppressed
Fluticasone Propionate	Fluticasone Propionate	20	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	19	suppressed
Azelastine Hcl	Azelastine Hcl	17	suppressed
Glipizide	Glipizide	17	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	17	suppressed
Ropinirole Hcl	Ropinirole Hcl	17	suppressed
Sucralfate	Sucralfate	17	suppressed
Alendronate Sodium	Alendronate Sodium	16	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	15	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	15	suppressed
Januvia	Sitagliptin Phosphate	15	suppressed
Spiriva Handihaler	Tiotropium Bromide	15	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	14	suppressed
Haloperidol Decanoate	Haloperidol Decanoate	14	suppressed
Hydrocortisone	Hydrocortisone	14	suppressed
Meloxicam	Meloxicam	14	suppressed
Midodrine Hcl	Midodrine Hcl	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	11
Rayaldee	Calcifediol	14	suppressed
Atenolol	Atenolol	13	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	13	suppressed
Bupropion Xl	Bupropion Hcl	13	suppressed
Buspirone Hcl	Buspirone Hcl	13	suppressed
Clozapine	Clozapine	13	suppressed
Ibuprofen	Ibuprofen	13	suppressed
Memantine Hcl Er	Memantine Hcl	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Baclofen	Baclofen	12	suppressed
Diclofenac Sodium	Diclofenac Sodium	12	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	12	suppressed
Ezetimibe	Ezetimibe	12	suppressed
Letrozole	Letrozole	12	suppressed
Mesalamine Er	Mesalamine	12	suppressed
Calcitriol	Calcitriol	11	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	11	suppressed
Flecainide Acetate	Flecainide Acetate	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	11	suppressed
Ipratropium-Albuterol	Ipratropium/Albuterol Sulfate	11	suppressed
Lithium Carbonate Er	Lithium Carbonate	11	suppressed
Methocarbamol	Methocarbamol	11	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	11	11
Oxybutynin Chloride	Oxybutynin Chloride	11	suppressed
Propranolol Hcl	Propranolol Hcl	11	suppressed
Tizanidine Hcl	Tizanidine 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