Healthcare provider profile · identity verified

John Schifferdecker, MD

Family Practice · VERNON, CT · NPI 1255344123

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	636	165
Levothyroxine Sodium	Levothyroxine Sodium	262	62
Amlodipine Besylate	Amlodipine Besylate	255	68
Lisinopril	Lisinopril	251	58
Losartan Potassium	Losartan Potassium	248	58
Hydrochlorothiazide	Hydrochlorothiazide	237	58
Metformin Hcl	Metformin Hcl	211	63
Omeprazole	Omeprazole	204	55
Metoprolol Succinate	Metoprolol Succinate	193	54
Simvastatin	Simvastatin	182	45
Pantoprazole Sodium	Pantoprazole Sodium	164	37
Escitalopram Oxalate	Escitalopram Oxalate	138	31
Rosuvastatin Calcium	Rosuvastatin Calcium	138	37
Gabapentin	Gabapentin	125	39
Metoprolol Tartrate	Metoprolol Tartrate	110	27
Pravastatin Sodium	Pravastatin Sodium	101	25
Furosemide	Furosemide	88	23
Famotidine	Famotidine	83	22
Montelukast Sodium	Montelukast Sodium	78	22
Sertraline Hcl	Sertraline Hcl	77	20
Tamsulosin Hcl	Tamsulosin Hcl	76	29
Alprazolam	Alprazolam	68	27
Alendronate Sodium	Alendronate Sodium	66	16
Allopurinol	Allopurinol	64	18
Trazodone Hcl	Trazodone Hcl	64	24
Methocarbamol	Methocarbamol	63	14
Januvia	Sitagliptin Phosphate	61	21
Ezetimibe	Ezetimibe	60	25
Oxycodone Hcl	Oxycodone Hcl	57	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	56	18
Albuterol Sulfate Hfa	Albuterol Sulfate	52	26
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	50	11
Valsartan	Valsartan	45	11
Synthroid	Levothyroxine Sodium	44	11
Buspirone Hcl	Buspirone Hcl	41	12
Fluticasone Propionate	Fluticasone Propionate	41	19
Glimepiride	Glimepiride	40	14
Meloxicam	Meloxicam	40	14
Bupropion Xl	Bupropion Hcl	39	suppressed
Metformin Hcl Er	Metformin Hcl	39	11
Eliquis	Apixaban	38	12
Irbesartan	Irbesartan	37	suppressed
Carvedilol	Carvedilol	36	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	36	suppressed
Potassium Chloride	Potassium Chloride	35	13
Bupropion Hcl Sr	Bupropion Hcl	33	suppressed
Duloxetine Hcl	Duloxetine Hcl	33	suppressed
Tramadol Hcl	Tramadol Hcl	33	13
Citalopram Hbr	Citalopram Hydrobromide	30	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	29	suppressed
Ramipril	Ramipril	29	suppressed
Clonazepam	Clonazepam	28	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	27	suppressed
Enalapril Maleate	Enalapril Maleate	26	suppressed
Ipratropium Bromide	Ipratropium Bromide	26	suppressed
Lansoprazole	Lansoprazole	26	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	26	suppressed
Baclofen	Baclofen	25	suppressed
Jardiance	Empagliflozin	25	13
Fenofibrate	Fenofibrate Nanocrystallized	23	suppressed
Linzess	Linaclotide	23	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	23	suppressed
Atenolol	Atenolol	22	suppressed
Dexlansoprazole Dr	Dexlansoprazole	22	suppressed
Mirtazapine	Mirtazapine	22	suppressed
Colesevelam Hcl	Colesevelam Hcl	21	suppressed
Finasteride	Finasteride	21	suppressed
Lactulose	Lactulose	21	suppressed
Lovastatin	Lovastatin	21	suppressed
Nystatin	Nystatin	21	suppressed
Prednisone	Prednisone	21	14
Farxiga	Dapagliflozin Propanediol	20	suppressed
Fenofibrate	Fenofibrate	20	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	20	suppressed
Paroxetine Hcl	Paroxetine Hcl	20	suppressed
Pregabalin	Pregabalin	20	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	20	suppressed
Tizanidine Hcl	Tizanidine Hcl	19	suppressed
Amoxicillin	Amoxicillin	18	11
Colchicine	Colchicine	18	suppressed
Lorazepam	Lorazepam	18	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	18	suppressed
Raloxifene Hcl	Raloxifene Hcl	18	suppressed
Ropinirole Hcl	Ropinirole Hcl	18	suppressed
Verapamil Er	Verapamil Hcl	18	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	17	15
Hydromorphone Hcl	Hydromorphone Hcl	17	suppressed
Nebivolol Hcl	Nebivolol Hcl	17	suppressed
Ventolin Hfa	Albuterol Sulfate	17	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	16	suppressed
Nifedipine Er	Nifedipine	16	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	15	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	15	suppressed
Donepezil Hcl	Donepezil Hcl	15	suppressed
Glipizide Er	Glipizide	15	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	15	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	15	suppressed
Spironolactone	Spironolactone	15	suppressed
Symbicort	Budesonide/Formoterol Fumarate	15	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	14	suppressed
Celecoxib	Celecoxib	14	suppressed
Clopidogrel	Clopidogrel Bisulfate	14	suppressed
Levetiracetam	Levetiracetam	14	suppressed
Lidocaine	Lidocaine	14	suppressed
Rivastigmine	Rivastigmine	14	suppressed
Warfarin Sodium	Warfarin Sodium	14	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	13	suppressed
Benazepril Hcl	Benazepril Hcl	13	suppressed
Chlorthalidone	Chlorthalidone	13	suppressed
Fentanyl	Fentanyl	13	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	13	suppressed
Ibuprofen	Ibuprofen	13	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	13	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	12	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	12	suppressed
Labetalol Hcl	Labetalol Hcl	12	suppressed
Memantine Hcl	Memantine Hcl	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Amiloride Hcl	Amiloride Hcl	11	suppressed
Azelastine Hcl	Azelastine Hcl	11	suppressed
Clonidine Hcl	Clonidine Hcl	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	11	suppressed
Valacyclovir	Valacyclovir Hcl	11	suppressed
Vitamin D2	Ergocalciferol (Vitamin D2)	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