Healthcare provider profile · identity verified

Mark D Whitaker, DO

Family Practice · PHOENIX, AZ · NPI 1578572384

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
Atorvastatin Calcium	Atorvastatin Calcium	387	114
Alprazolam	Alprazolam	274	51
Levothyroxine Sodium	Levothyroxine Sodium	269	77
Gabapentin	Gabapentin	255	54
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	251	44
Pantoprazole Sodium	Pantoprazole Sodium	236	68
Metformin Hcl	Metformin Hcl	231	70
Tamsulosin Hcl	Tamsulosin Hcl	221	64
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	220	26
Prednisone	Prednisone	199	120
Zolpidem Tartrate	Zolpidem Tartrate	196	37
Albuterol Sulfate Hfa	Albuterol Sulfate	190	54
Metoprolol Succinate	Metoprolol Succinate	187	48
Simvastatin	Simvastatin	184	53
Lisinopril	Lisinopril	176	53
Tramadol Hcl	Tramadol Hcl	138	34
Clonazepam	Clonazepam	134	27
Losartan Potassium	Losartan Potassium	129	42
Rosuvastatin Calcium	Rosuvastatin Calcium	129	45
Omeprazole	Omeprazole	122	36
Amlodipine Besylate	Amlodipine Besylate	115	40
Testosterone Cypionate	Testosterone Cypionate	112	21
Diazepam	Diazepam	104	27
Oxycodone Hcl	Oxycodone Hcl	103	20
Ozempic	Semaglutide	102	19
Azithromycin	Azithromycin	98	75
Furosemide	Furosemide	96	37
Famotidine	Famotidine	89	20
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	88	24
Hydrochlorothiazide	Hydrochlorothiazide	86	26
Ibuprofen	Ibuprofen	85	29
Potassium Chloride	Potassium Chloride	85	26
Jardiance	Empagliflozin	83	17
Lorazepam	Lorazepam	79	16
Sertraline Hcl	Sertraline Hcl	73	22
Trazodone Hcl	Trazodone Hcl	73	19
Carvedilol	Carvedilol	68	23
Escitalopram Oxalate	Escitalopram Oxalate	67	17
Metoprolol Tartrate	Metoprolol Tartrate	66	20
Eliquis	Apixaban	64	14
Venlafaxine Hcl Er	Venlafaxine Hcl	63	14
Trulicity	Dulaglutide	62	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	62	16
Fluoxetine Hcl	Fluoxetine Hcl	60	18
Meloxicam	Meloxicam	59	17
Tizanidine Hcl	Tizanidine Hcl	59	16
Pioglitazone Hcl	Pioglitazone Hcl	53	16
Allopurinol	Allopurinol	50	12
Diclofenac Sodium	Diclofenac Sodium	50	18
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	49	11
Pregabalin	Pregabalin	49	14
Chlorthalidone	Chlorthalidone	48	15
Duloxetine Hcl	Duloxetine Hcl	47	11
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	46	suppressed
Naproxen	Naproxen	46	15
Valacyclovir	Valacyclovir Hcl	44	21
Ondansetron Odt	Ondansetron	41	20
Triamcinolone Acetonide	Triamcinolone Acetonide	41	20
Spironolactone	Spironolactone	40	15
Synthroid	Levothyroxine Sodium	40	12
Cefdinir	Cefdinir	39	24
Estradiol	Estradiol	39	12
Olmesartan Medoxomil	Olmesartan Medoxomil	39	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	38	32
Propranolol Hcl	Propranolol Hcl	38	12
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	37	13
Valsartan	Valsartan	37	11
Celecoxib	Celecoxib	36	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	36	31
Hydrocortisone	Hydrocortisone	36	11
Temazepam	Temazepam	36	suppressed
Breo Ellipta	Fluticasone/Vilanterol	35	suppressed
Cephalexin	Cephalexin	34	suppressed
Citalopram Hbr	Citalopram Hydrobromide	34	suppressed
Farxiga	Dapagliflozin Propanediol	34	suppressed
Fluticasone Propionate	Fluticasone Propionate	34	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	34	13
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	32	13
Methylprednisolone	Methylprednisolone	32	31
Mounjaro	Tirzepatide	32	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	32	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	32	suppressed
Montelukast Sodium	Montelukast Sodium	31	suppressed
Nifedipine Er	Nifedipine	30	12
Pravastatin Sodium	Pravastatin Sodium	30	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	29	suppressed
Ventolin Hfa	Albuterol Sulfate	29	suppressed
Donepezil Hcl	Donepezil Hcl	28	suppressed
Finasteride	Finasteride	28	suppressed
Mometasone Furoate	Mometasone Furoate	28	suppressed
Clopidogrel	Clopidogrel Bisulfate	27	suppressed
Ezetimibe	Ezetimibe	27	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	26	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	26	22
Atenolol	Atenolol	25	suppressed
Lamotrigine	Lamotrigine	25	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	24	suppressed
Codeine Sulfate	Codeine Sulfate	24	suppressed
Symbicort	Budesonide/Formoterol Fumarate	24	suppressed
Propranolol Hcl Er	Propranolol Hcl	23	suppressed
Testosterone	Testosterone	23	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	22	suppressed
Lansoprazole	Lansoprazole	22	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	22	suppressed
Xigduo Xr	Dapaglifloz Propaned/Metformin	21	suppressed
Methocarbamol	Methocarbamol	20	suppressed
Glipizide	Glipizide	19	suppressed
Glipizide Er	Glipizide	19	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	18	suppressed
Bupropion Xl	Bupropion Hcl	18	suppressed
Mirtazapine	Mirtazapine	18	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	17	suppressed
Alendronate Sodium	Alendronate Sodium	17	suppressed
Bupropion Hcl Sr	Bupropion Hcl	17	suppressed
Clindamycin Phosphate	Clindamycin Phosphate	17	suppressed
Ketoconazole	Ketoconazole	17	suppressed
Metformin Hcl Er	Metformin Hcl	17	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	17	suppressed
Myrbetriq	Mirabegron	17	suppressed
Paroxetine Hcl	Paroxetine Hcl	17	suppressed
Verapamil Er	Verapamil Hcl	17	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Entresto	Sacubitril/Valsartan	15	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	15	suppressed
Glimepiride	Glimepiride	15	suppressed
Jentadueto Xr	Linagliptin/Metformin Hcl	15	suppressed
Linzess	Linaclotide	15	suppressed
Ropinirole Hcl	Ropinirole Hcl	15	suppressed
Solifenacin Succinate	Solifenacin Succinate	15	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	15	suppressed
Xarelto	Rivaroxaban	15	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	14	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	14	suppressed
Breyna	Budesonide/Formoterol Fumarate	14	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	14	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	14	suppressed
Hydralazine Hcl	Hydralazine Hcl	14	suppressed
Ondansetron Hcl	Ondansetron Hcl	14	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	14	suppressed
Oxycontin	Oxycodone Hcl	14	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	14	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	14	suppressed
Acyclovir	Acyclovir	13	suppressed
Amoxicillin	Amoxicillin	13	suppressed
Brilinta	Ticagrelor	13	suppressed
Buspirone Hcl	Buspirone Hcl	13	suppressed
Colestipol Hcl	Colestipol Hcl	13	suppressed
Etodolac	Etodolac	13	suppressed
Fluconazole	Fluconazole	13	suppressed
Levofloxacin	Levofloxacin	13	12
Lovastatin	Lovastatin	13	suppressed
Memantine Hcl	Memantine Hcl	13	suppressed
Zaleplon	Zaleplon	13	suppressed
Baclofen	Baclofen	12	suppressed
Clotrimazole	Clotrimazole	12	suppressed
Cyanocobalamin Injection	Cyanocobalamin (Vitamin B-12)	12	suppressed
Edarbi	Azilsartan Medoxomil	12	suppressed
Eszopiclone	Eszopiclone	12	suppressed
Glyburide	Glyburide	12	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	12	suppressed
Januvia	Sitagliptin Phosphate	12	suppressed
Lidocaine	Lidocaine	12	suppressed
Methotrexate	Methotrexate Sodium	12	suppressed
Primidone	Primidone	12	suppressed
Terazosin Hcl	Terazosin Hcl	12	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	12	suppressed
Tramadol Hcl Er	Tramadol Hcl	12	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	11	suppressed
Dutasteride	Dutasteride	11	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	11	suppressed
Lactulose	Lactulose	11	suppressed
Movantik	Naloxegol Oxalate	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