Healthcare provider profile · identity verified

Mark A Giarrizzi, PAC

Physician Assistant · ROCK HILL, SC · NPI 1376558007

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	579	77
Atorvastatin Calcium	Atorvastatin Calcium	573	91
Losartan Potassium	Losartan Potassium	561	71
Donepezil Hcl	Donepezil Hcl	460	74
Amlodipine Besylate	Amlodipine Besylate	436	71
Trazodone Hcl	Trazodone Hcl	423	70
Omeprazole	Omeprazole	383	63
Furosemide	Furosemide	380	68
Eliquis	Apixaban	370	53
Potassium Chloride	Potassium Chloride	353	53
Sertraline Hcl	Sertraline Hcl	318	52
Memantine Hcl	Memantine Hcl	315	46
Gabapentin	Gabapentin	245	40
Mirtazapine	Mirtazapine	226	39
Escitalopram Oxalate	Escitalopram Oxalate	225	28
Metoprolol Succinate	Metoprolol Succinate	224	40
Metoprolol Tartrate	Metoprolol Tartrate	209	30
Rosuvastatin Calcium	Rosuvastatin Calcium	200	31
Simvastatin	Simvastatin	178	20
Pantoprazole Sodium	Pantoprazole Sodium	170	29
Quetiapine Fumarate	Quetiapine Fumarate	164	31
Lisinopril	Lisinopril	162	28
Montelukast Sodium	Montelukast Sodium	159	20
Tamsulosin Hcl	Tamsulosin Hcl	150	31
Carvedilol	Carvedilol	149	32
Metformin Hcl	Metformin Hcl	148	20
Hydrochlorothiazide	Hydrochlorothiazide	144	21
Alendronate Sodium	Alendronate Sodium	130	17
Clopidogrel	Clopidogrel Bisulfate	121	18
Pravastatin Sodium	Pravastatin Sodium	118	17
Fluticasone Propionate	Fluticasone Propionate	116	28
Famotidine	Famotidine	112	21
Latanoprost	Latanoprost	111	20
Allopurinol	Allopurinol	107	17
Hydralazine Hcl	Hydralazine Hcl	92	13
Spironolactone	Spironolactone	92	15
Autoshield Duo Pen Needle	Pen Needle,dual Safety,diabetc	88	15
Tramadol Hcl	Tramadol Hcl	87	33
Citalopram Hbr	Citalopram Hydrobromide	79	15
Jardiance	Empagliflozin	79	13
Meloxicam	Meloxicam	77	12
Divalproex Sodium	Divalproex Sodium	75	11
Oxybutynin Chloride Er	Oxybutynin Chloride	75	12
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	74	12
Xarelto	Rivaroxaban	71	14
Nystatin	Nystatin	70	24
Buspirone Hcl	Buspirone Hcl	69	12
Risperidone	Risperidone	69	15
Olanzapine	Olanzapine	66	11
Levetiracetam	Levetiracetam	65	14
Amiodarone Hcl	Amiodarone Hcl	62	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	62	15
Finasteride	Finasteride	62	11
Ropinirole Hcl	Ropinirole Hcl	62	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	62	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	61	49
Duloxetine Hcl	Duloxetine Hcl	60	14
Metformin Hcl Er	Metformin Hcl	60	suppressed
Diltiazem 24hr Er	Diltiazem Hcl	59	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	55	38
Ezetimibe	Ezetimibe	55	suppressed
Myrbetriq	Mirabegron	55	11
Esomeprazole Magnesium	Esomeprazole Magnesium	52	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	51	11
Lorazepam	Lorazepam	50	13
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	50	suppressed
Atenolol	Atenolol	49	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	46	suppressed
Diclofenac Sodium	Diclofenac Sodium	44	19
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	44	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	43	suppressed
Valsartan	Valsartan	43	suppressed
Midodrine Hcl	Midodrine Hcl	42	suppressed
Hydroxychloroquine Sulfate	Hydroxychloroquine Sulfate	41	suppressed
Cephalexin	Cephalexin	40	26
Bupropion Hcl Sr	Bupropion Hcl	39	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	39	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	38	suppressed
Torsemide	Torsemide	38	suppressed
Trospium Chloride	Trospium Chloride	38	suppressed
Pregabalin	Pregabalin	37	suppressed
Nifedipine Er	Nifedipine	36	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	33	suppressed
Sucralfate	Sucralfate	33	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	33	20
Albuterol Sulfate Hfa	Albuterol Sulfate	32	14
Memantine Hcl Er	Memantine Hcl	31	suppressed
Aripiprazole	Aripiprazole	30	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	30	suppressed
Gemtesa	Vibegron	30	suppressed
Methenamine Hippurate	Methenamine Hippurate	30	suppressed
Ondansetron Hcl	Ondansetron Hcl	30	25
Ranolazine Er	Ranolazine	30	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	29	suppressed
Diltiazem 24hr Er (La)	Diltiazem Hcl	29	suppressed
Januvia	Sitagliptin Phosphate	29	suppressed
Topiramate	Topiramate	28	suppressed
Tradjenta	Linagliptin	28	suppressed
Oxycodone Hcl	Oxycodone Hcl	27	suppressed
Paroxetine Hcl	Paroxetine Hcl	27	suppressed
Prednisone	Prednisone	26	11
Glipizide	Glipizide	25	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	25	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	25	suppressed
Alprazolam	Alprazolam	24	suppressed
Clonazepam	Clonazepam	24	suppressed
Liothyronine Sodium	Liothyronine Sodium	24	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	24	23
Bupropion Xl	Bupropion Hcl	23	suppressed
Dorzolamide Hcl	Dorzolamide Hcl	23	suppressed
Lamotrigine	Lamotrigine	23	suppressed
Paliperidone Er	Paliperidone	23	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	23	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	22	suppressed
Novolog Flexpen	Insulin Aspart	22	suppressed
Primidone	Primidone	22	suppressed
Breo Ellipta	Fluticasone/Vilanterol	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Humalog Kwikpen U-100	Insulin Lispro	21	suppressed
Ipratropium Bromide	Ipratropium Bromide	21	suppressed
Verapamil Er	Verapamil Hcl	21	suppressed
Fenofibrate	Fenofibrate	20	suppressed
Nyamyc	Nystatin	20	suppressed
Tizanidine Hcl	Tizanidine Hcl	20	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	19	suppressed
Flecainide Acetate	Flecainide Acetate	19	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	19	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	18	suppressed
Timolol Maleate	Timolol Maleate	18	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	18	suppressed
Zonisamide	Zonisamide	18	suppressed
Azithromycin	Azithromycin	17	14
Bupropion Hcl	Bupropion Hcl	17	suppressed
Ciclopirox	Ciclopirox Olamine	17	suppressed
Amantadine	Amantadine Hcl	16	suppressed
Clonidine Hcl	Clonidine Hcl	16	suppressed
Irbesartan	Irbesartan	16	suppressed
Labetalol Hcl	Labetalol Hcl	16	suppressed
Loperamide	Loperamide Hcl	16	suppressed
Rivastigmine	Rivastigmine Tartrate	16	suppressed
Digoxin	Digoxin	15	suppressed
Folic Acid	Folic Acid	15	suppressed
Glipizide Er	Glipizide	15	suppressed
Levemir Flexpen	Insulin Detemir	15	suppressed
Meclizine Hcl	Meclizine Hcl	15	suppressed
Sevelamer Carbonate	Sevelamer Carbonate	15	suppressed
Azelastine Hcl	Azelastine Hcl	14	suppressed
Levofloxacin	Levofloxacin	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Mometasone Furoate	Mometasone Furoate	14	suppressed
Risperidone Odt	Risperidone	14	suppressed
Solifenacin Succinate	Solifenacin Succinate	14	suppressed
Benazepril Hcl	Benazepril Hcl	13	suppressed
Carbamazepine Er	Carbamazepine	13	suppressed
Clonidine	Clonidine	13	suppressed
Dexlansoprazole Dr	Dexlansoprazole	13	suppressed
Enalapril Maleate	Enalapril Maleate	13	suppressed
Entresto	Sacubitril/Valsartan	13	suppressed
Hydroxyurea	Hydroxyurea	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Trimethoprim	Trimethoprim	13	suppressed
Arnuity Ellipta	Fluticasone Furoate	12	suppressed
Diltiazem 12hr Er	Diltiazem Hcl	12	suppressed
Diltiazem 24hr Er (Xr)	Diltiazem Hcl	12	suppressed
Fludrocortisone Acetate	Fludrocortisone Acetate	12	suppressed
Galantamine Hbr	Galantamine Hbr	12	suppressed
Methimazole	Methimazole	12	suppressed
Methylprednisolone	Methylprednisolone	12	suppressed
Naltrexone Hcl	Naltrexone Hcl	12	suppressed
Nystop	Nystatin	12	12
Rivastigmine	Rivastigmine	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Temazepam	Temazepam	12	suppressed
Trintellix	Vortioxetine Hydrobromide	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Verapamil Hcl	Verapamil Hcl	12	suppressed
Celecoxib	Celecoxib	11	suppressed
Haloperidol	Haloperidol	11	suppressed
Hydrocortisone	Hydrocortisone	11	suppressed
Lithium Carbonate	Lithium Carbonate	11	suppressed
Nabumetone	Nabumetone	11	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	11	11

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