Healthcare provider profile · identity verified

Richard A Singer, MD

Internal Medicine · WESTPORT, CT · NPI 1922009638

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	424	135
Atorvastatin Calcium	Atorvastatin Calcium	336	99
Amlodipine Besylate	Amlodipine Besylate	318	90
Metformin Hcl	Metformin Hcl	245	76
Levothyroxine Sodium	Levothyroxine Sodium	206	60
Metoprolol Succinate	Metoprolol Succinate	174	49
Prednisone	Prednisone	128	36
Tramadol Hcl	Tramadol Hcl	124	31
Ozempic	Semaglutide	121	23
Ezetimibe	Ezetimibe	120	42
Omeprazole	Omeprazole	117	34
Irbesartan	Irbesartan	113	35
Eliquis	Apixaban	109	22
Losartan Potassium	Losartan Potassium	108	32
Pantoprazole Sodium	Pantoprazole Sodium	108	35
Albuterol Sulfate Hfa	Albuterol Sulfate	107	45
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	100	24
Alprazolam	Alprazolam	93	16
Zolpidem Tartrate	Zolpidem Tartrate	89	18
Lorazepam	Lorazepam	87	17
Lisinopril	Lisinopril	85	31
Tamsulosin Hcl	Tamsulosin Hcl	82	34
Escitalopram Oxalate	Escitalopram Oxalate	78	23
Spironolactone	Spironolactone	77	27
Trazodone Hcl	Trazodone Hcl	76	19
Famotidine	Famotidine	72	26
Jardiance	Empagliflozin	69	17
Montelukast Sodium	Montelukast Sodium	69	21
Sertraline Hcl	Sertraline Hcl	67	19
Allopurinol	Allopurinol	66	19
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	63	55
Methylprednisolone	Methylprednisolone	63	40
Farxiga	Dapagliflozin Propanediol	57	14
Meloxicam	Meloxicam	56	23
Furosemide	Furosemide	54	23
Gabapentin	Gabapentin	54	20
Mounjaro	Tirzepatide	54	suppressed
Olanzapine	Olanzapine	54	11
Trulicity	Dulaglutide	54	13
Mirtazapine	Mirtazapine	52	18
Quetiapine Fumarate	Quetiapine Fumarate	50	12
Simvastatin	Simvastatin	50	13
Doxycycline Hyclate	Doxycycline Hyclate	48	34
Esomeprazole Magnesium	Esomeprazole Magnesium	48	14
Hydrochlorothiazide	Hydrochlorothiazide	48	17
Clopidogrel	Clopidogrel Bisulfate	47	11
Diclofenac Sodium	Diclofenac Sodium	46	11
Bupropion Xl	Bupropion Hcl	45	14
Fluticasone Propionate	Fluticasone Propionate	44	14
Irbesartan-Hydrochlorothiazide	Irbesartan/Hydrochlorothiazide	44	15
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	42	suppressed
Celecoxib	Celecoxib	42	15
Duloxetine Hcl	Duloxetine Hcl	40	12
Nystatin	Nystatin	40	12
Valacyclovir	Valacyclovir Hcl	39	17
Azelastine Hcl	Azelastine Hcl	38	suppressed
Januvia	Sitagliptin Phosphate	38	suppressed
Carvedilol	Carvedilol	35	11
Temazepam	Temazepam	35	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	34	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	32	suppressed
Tresiba Flextouch U-200	Insulin Degludec	32	suppressed
Liothyronine Sodium	Liothyronine Sodium	31	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	31	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	30	14
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	29	suppressed
Potassium Chloride	Potassium Chloride	29	suppressed
Pravastatin Sodium	Pravastatin Sodium	29	suppressed
Synthroid	Levothyroxine Sodium	29	suppressed
Atenolol	Atenolol	28	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	28	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	28	15
Pregabalin	Pregabalin	28	suppressed
Ventolin Hfa	Albuterol Sulfate	28	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	27	suppressed
Azithromycin	Azithromycin	27	23
Eszopiclone	Eszopiclone	27	suppressed
Buspirone Hcl	Buspirone Hcl	26	suppressed
Nebivolol Hcl	Nebivolol Hcl	26	suppressed
Oxycodone Hcl	Oxycodone Hcl	26	suppressed
Qvar Redihaler	Beclomethasone Dipropionate	25	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	24	20
Glimepiride	Glimepiride	23	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	23	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	22	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	22	suppressed
Valsartan	Valsartan	22	suppressed
Colchicine	Colchicine	20	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	20	suppressed
Ipratropium Bromide	Ipratropium Bromide	20	suppressed
Propranolol Hcl Er	Propranolol Hcl	20	suppressed
Xarelto	Rivaroxaban	20	suppressed
Albendazole	Albendazole	19	suppressed
Clotrimazole	Clotrimazole	19	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	19	suppressed
Mupirocin	Mupirocin	19	13
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	19	suppressed
Breo Ellipta	Fluticasone/Vilanterol	17	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	17	17
Clonidine Hcl	Clonidine Hcl	16	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	16	suppressed
Metformin Hcl Er	Metformin Hcl	16	suppressed
Ondansetron Odt	Ondansetron	16	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	16	suppressed
Repatha Sureclick	Evolocumab	16	suppressed
Terconazole	Terconazole	16	suppressed
Diazepam	Diazepam	15	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	15	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	15	13
Baclofen	Baclofen	14	suppressed
Donepezil Hcl	Donepezil Hcl	14	suppressed
Levofloxacin	Levofloxacin	14	suppressed
Neomycin-Polymyxin-Dexameth	Neomycin/Polymyxin B/Dexametha	14	suppressed
Alendronate Sodium	Alendronate Sodium	13	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	12
Estradiol	Estradiol	13	suppressed
Jublia	Efinaconazole	13	suppressed
Ketoconazole	Ketoconazole	13	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	13	suppressed
Linzess	Linaclotide	13	suppressed
Meclizine Hcl	Meclizine Hcl	13	suppressed
Moxifloxacin Hcl	Moxifloxacin Hcl	13	11
Cefdinir	Cefdinir	12	suppressed
Dicyclomine Hcl	Dicyclomine Hcl	12	suppressed
Dutasteride	Dutasteride	12	suppressed
Ondansetron Hcl	Ondansetron Hcl	12	suppressed
Citalopram Hbr	Citalopram Hydrobromide	11	suppressed
Dulera	Mometasone/Formoterol	11	suppressed
Econazole Nitrate	Econazole Nitrate	11	suppressed
Megestrol Acetate	Megestrol Acetate	11	suppressed
Paroxetine Hcl	Paroxetine Hcl	11	suppressed
Serevent Diskus	Salmeterol Xinafoate	11	suppressed
Solifenacin Succinate	Solifenacin Succinate	11	suppressed
Terazosin Hcl	Terazosin Hcl	11	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	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

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