Healthcare provider profile · identity verified

John Taylor Mackay, MD

Family Practice · TALLAHASSEE, FL · NPI 1942267844

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
Rosuvastatin Calcium	Rosuvastatin Calcium	302	72
Levothyroxine Sodium	Levothyroxine Sodium	283	61
Ezetimibe	Ezetimibe	234	63
Atorvastatin Calcium	Atorvastatin Calcium	202	49
Metoprolol Succinate	Metoprolol Succinate	116	27
Amlodipine Besylate	Amlodipine Besylate	115	28
Alprazolam	Alprazolam	108	29
Omeprazole	Omeprazole	100	33
Zolpidem Tartrate	Zolpidem Tartrate	98	17
Pantoprazole Sodium	Pantoprazole Sodium	97	21
Losartan Potassium	Losartan Potassium	90	20
Jardiance	Empagliflozin	79	13
Eliquis	Apixaban	75	15
Prednisone	Prednisone	70	37
Tramadol Hcl	Tramadol Hcl	68	18
Duloxetine Hcl	Duloxetine Hcl	66	14
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	58	11
Enalapril Maleate	Enalapril Maleate	56	11
Lorazepam	Lorazepam	56	suppressed
Pravastatin Sodium	Pravastatin Sodium	54	17
Escitalopram Oxalate	Escitalopram Oxalate	51	13
Synthroid	Levothyroxine Sodium	51	11
Donepezil Hcl	Donepezil Hcl	50	13
Metformin Hcl	Metformin Hcl	49	14
Lisinopril	Lisinopril	43	12
Clopidogrel	Clopidogrel Bisulfate	42	12
Memantine Hcl	Memantine Hcl	40	suppressed
Simvastatin	Simvastatin	40	suppressed
Valsartan	Valsartan	40	14
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	39	34
Fluticasone Propionate	Fluticasone Propionate	37	13
Furosemide	Furosemide	37	13
Azithromycin	Azithromycin	36	26
Famotidine	Famotidine	36	15
Myrbetriq	Mirabegron	36	12
Metformin Hcl Er	Metformin Hcl	35	suppressed
Mirtazapine	Mirtazapine	35	suppressed
Tizanidine Hcl	Tizanidine Hcl	35	suppressed
Bupropion Xl	Bupropion Hcl	34	suppressed
Nebivolol Hcl	Nebivolol Hcl	34	suppressed
Sertraline Hcl	Sertraline Hcl	33	suppressed
Gabapentin	Gabapentin	32	11
Meloxicam	Meloxicam	32	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	32	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	31	suppressed
Carvedilol	Carvedilol	30	suppressed
Glimepiride	Glimepiride	29	suppressed
Potassium Chloride	Potassium Chloride	29	14
Ozempic	Semaglutide	28	suppressed
Irbesartan	Irbesartan	27	suppressed
Montelukast Sodium	Montelukast Sodium	27	suppressed
Ramipril	Ramipril	27	suppressed
Rybelsus	Semaglutide	27	suppressed
Tamsulosin Hcl	Tamsulosin Hcl	26	11
Hydrochlorothiazide	Hydrochlorothiazide	24	suppressed
Celecoxib	Celecoxib	23	suppressed
Clonazepam	Clonazepam	23	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	23	20
Valacyclovir	Valacyclovir Hcl	23	14
Verapamil Er	Verapamil Hcl	23	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	23	suppressed
Entresto	Sacubitril/Valsartan	22	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	22	suppressed
Testosterone	Testosterone	22	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	22	suppressed
Warfarin Sodium	Warfarin Sodium	22	suppressed
Allopurinol	Allopurinol	21	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	21	suppressed
Clonidine Hcl	Clonidine Hcl	20	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	20	18
Ezetimibe-Simvastatin	Ezetimibe/Simvastatin	20	suppressed
Finasteride	Finasteride	20	suppressed
Nabumetone	Nabumetone	20	suppressed
Paroxetine Hcl	Paroxetine Hcl	20	suppressed
Repatha Sureclick	Evolocumab	20	suppressed
Ventolin Hfa	Albuterol Sulfate	20	13
Ciprofloxacin Hcl	Ciprofloxacin Hcl	19	19
Ipratropium Bromide	Ipratropium Bromide	19	suppressed
Telmisartan	Telmisartan	19	suppressed
Bupropion Hcl Sr	Bupropion Hcl	18	suppressed
Lansoprazole	Lansoprazole	18	suppressed
Baclofen	Baclofen	17	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	17	suppressed
Xarelto	Rivaroxaban	17	suppressed
Breyna	Budesonide/Formoterol Fumarate	16	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	16	suppressed
Oxycodone Hcl	Oxycodone Hcl	16	suppressed
Alendronate Sodium	Alendronate Sodium	15	suppressed
Ondansetron Hcl	Ondansetron Hcl	15	suppressed
Qvar Redihaler	Beclomethasone Dipropionate	15	suppressed
Amlodipine-Valsartan	Amlodipine Besylate/Valsartan	14	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	14	suppressed
Estradiol (Twice Weekly)	Estradiol	14	suppressed
Naltrexone Hcl	Naltrexone Hcl	14	suppressed
Pregabalin	Pregabalin	14	suppressed
Etodolac	Etodolac	13	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	13	suppressed
Albuterol Sulfate Hfa	Albuterol Sulfate	12	suppressed
Aripiprazole	Aripiprazole	12	suppressed
Cefuroxime	Cefuroxime Axetil	12	11
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	12	suppressed
Edarbi	Azilsartan Medoxomil	12	suppressed
Estradiol	Estradiol	12	suppressed
Eszopiclone	Eszopiclone	12	suppressed
Farxiga	Dapagliflozin Propanediol	12	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	12	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	12	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	12	suppressed
Rivastigmine	Rivastigmine	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	11	suppressed
Minoxidil	Minoxidil	11	suppressed
Ondansetron Odt	Ondansetron	11	suppressed
Oxycontin	Oxycodone Hcl	11	suppressed
Roflumilast	Roflumilast	11	suppressed
Testosterone Cypionate	Testosterone Cypionate	11	suppressed
Tresiba Flextouch U-200	Insulin Degludec	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