Healthcare provider profile · identity verified

John C Baker, MD

Family Practice · NEWPORT, ME · NPI 1780651455

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	533	153
Losartan Potassium	Losartan Potassium	411	125
Levothyroxine Sodium	Levothyroxine Sodium	383	119
Omeprazole	Omeprazole	329	96
Metoprolol Succinate	Metoprolol Succinate	316	97
Lisinopril	Lisinopril	309	99
Amlodipine Besylate	Amlodipine Besylate	236	74
Furosemide	Furosemide	229	69
Metformin Hcl	Metformin Hcl	184	57
Tamsulosin Hcl	Tamsulosin Hcl	180	52
Eliquis	Apixaban	155	40
Metoprolol Tartrate	Metoprolol Tartrate	148	44
Trazodone Hcl	Trazodone Hcl	133	41
Glipizide	Glipizide	132	37
Simvastatin	Simvastatin	131	37
Rosuvastatin Calcium	Rosuvastatin Calcium	127	41
Pantoprazole Sodium	Pantoprazole Sodium	123	36
Hydrochlorothiazide	Hydrochlorothiazide	117	41
Gabapentin	Gabapentin	114	38
Albuterol Sulfate Hfa	Albuterol Sulfate	98	37
Atenolol	Atenolol	97	36
Potassium Chloride	Potassium Chloride	95	30
Allopurinol	Allopurinol	88	25
Isosorbide Mononitrate Er	Isosorbide Mononitrate	85	23
Finasteride	Finasteride	80	21
Sertraline Hcl	Sertraline Hcl	71	21
Jardiance	Empagliflozin	68	16
Oxycodone Hcl	Oxycodone Hcl	62	16
Venlafaxine Hcl Er	Venlafaxine Hcl	62	14
Breo Ellipta	Fluticasone/Vilanterol	60	15
Triamcinolone Acetonide	Triamcinolone Acetonide	58	38
Duloxetine Hcl	Duloxetine Hcl	55	15
Carvedilol	Carvedilol	53	16
Tramadol Hcl	Tramadol Hcl	53	18
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	51	15
Hydroxyzine Hcl	Hydroxyzine Hcl	50	14
Hydralazine Hcl	Hydralazine Hcl	49	14
Lorazepam	Lorazepam	49	15
Famotidine	Famotidine	47	15
Clonazepam	Clonazepam	42	12
Hydrocortisone	Hydrocortisone	42	23
Synthroid	Levothyroxine Sodium	42	11
Chlorthalidone	Chlorthalidone	41	13
Fluticasone Propionate	Fluticasone Propionate	40	15
Lantus	Insulin Glargine,hum.Rec.Anlog	39	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	37	13
Prednisone	Prednisone	37	22
Clonidine Hcl	Clonidine Hcl	36	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	36	16
Nitroglycerin	Nitroglycerin	35	23
Farxiga	Dapagliflozin Propanediol	34	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	34	12
Spironolactone	Spironolactone	34	11
Mirtazapine	Mirtazapine	33	suppressed
Januvia	Sitagliptin Phosphate	32	suppressed
Jantoven	Warfarin Sodium	30	suppressed
Mounjaro	Tirzepatide	30	suppressed
Baclofen	Baclofen	29	11
Clopidogrel	Clopidogrel Bisulfate	29	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	27	19
Montelukast Sodium	Montelukast Sodium	27	suppressed
Citalopram Hbr	Citalopram Hydrobromide	26	suppressed
Ropinirole Hcl	Ropinirole Hcl	26	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	25	11
Oxybutynin Chloride Er	Oxybutynin Chloride	25	suppressed
Azithromycin	Azithromycin	24	21
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	24	suppressed
Meloxicam	Meloxicam	23	suppressed
Ondansetron Hcl	Ondansetron Hcl	23	11
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	23	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	23	suppressed
Pregabalin	Pregabalin	23	suppressed
Mupirocin	Mupirocin	22	suppressed
Paroxetine Hcl	Paroxetine Hcl	22	suppressed
Xarelto	Rivaroxaban	22	suppressed
Donepezil Hcl	Donepezil Hcl	21	suppressed
Enalapril Maleate	Enalapril Maleate	21	suppressed
Morphine Sulfate Er	Morphine Sulfate	21	suppressed
Pravastatin Sodium	Pravastatin Sodium	21	suppressed
Amiodarone Hcl	Amiodarone Hcl	20	suppressed
Buspirone Hcl	Buspirone Hcl	20	suppressed
Celecoxib	Celecoxib	20	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	20	suppressed
Lamotrigine	Lamotrigine	20	suppressed
Arexvy	Rsvpref3 Antigen/As01e/Pf	19	19
Bupropion Hcl Sr	Bupropion Hcl	19	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	19	11
Tizanidine Hcl	Tizanidine Hcl	19	suppressed
Valsartan	Valsartan	19	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	18	suppressed
Loperamide	Loperamide Hcl	18	suppressed
Nifedipine Er	Nifedipine	18	suppressed
Ozempic	Semaglutide	18	suppressed
Sucralfate	Sucralfate	18	suppressed
Trulicity	Dulaglutide	18	suppressed
Memantine Hcl	Memantine Hcl	17	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	16	suppressed
Praluent Pen	Alirocumab	16	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	16	suppressed
Amoxicillin	Amoxicillin	15	suppressed
Lovastatin	Lovastatin	15	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	15	suppressed
Warfarin Sodium	Warfarin Sodium	15	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	14	suppressed
Alendronate Sodium	Alendronate Sodium	14	suppressed
Diltiazem Hcl	Diltiazem Hcl	14	suppressed
Fluconazole	Fluconazole	14	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	14	suppressed
Bumetanide	Bumetanide	13	suppressed
Bupropion Xl	Bupropion Hcl	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	13	suppressed
Glimepiride	Glimepiride	13	suppressed
Nystatin	Nystatin	13	suppressed
Terazosin Hcl	Terazosin Hcl	13	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Diazepam	Diazepam	12	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	12	suppressed
Ramipril	Ramipril	12	suppressed
Sotalol	Sotalol Hcl	12	suppressed
Spiriva Handihaler	Tiotropium Bromide	12	suppressed
Verapamil Er	Verapamil Hcl	12	suppressed
Dapagliflozin	Dapagliflozin Propanediol	11	suppressed
Ezetimibe	Ezetimibe	11	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Meclizine Hcl	Meclizine Hcl	11	suppressed
Metformin Hcl Er	Metformin Hcl	11	suppressed
Naloxone Hcl	Naloxone Hcl	11	suppressed
Nebivolol Hcl	Nebivolol Hcl	11	suppressed
Repatha Syringe	Evolocumab	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	11	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	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