Healthcare provider profile · identity verified

Chaya Devi Ray, M.D.

Family Practice · MERRIMAC, MA · NPI 1679853139

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	721	200
Lisinopril	Lisinopril	451	114
Amlodipine Besylate	Amlodipine Besylate	329	91
Omeprazole	Omeprazole	308	102
Levothyroxine Sodium	Levothyroxine Sodium	283	72
Metoprolol Succinate	Metoprolol Succinate	229	61
Losartan Potassium	Losartan Potassium	209	63
Albuterol Sulfate Hfa	Albuterol Sulfate	194	57
Hydrochlorothiazide	Hydrochlorothiazide	188	53
Gabapentin	Gabapentin	180	42
Simvastatin	Simvastatin	162	48
Metformin Hcl	Metformin Hcl	147	42
Alprazolam	Alprazolam	139	26
Atenolol	Atenolol	135	38
Lorazepam	Lorazepam	130	32
Pantoprazole Sodium	Pantoprazole Sodium	128	36
Sertraline Hcl	Sertraline Hcl	127	32
Trazodone Hcl	Trazodone Hcl	122	29
Furosemide	Furosemide	114	36
Metoprolol Tartrate	Metoprolol Tartrate	114	27
Fluoxetine Hcl	Fluoxetine Hcl	108	26
Eliquis	Apixaban	104	23
Tramadol Hcl	Tramadol Hcl	98	18
Tamsulosin Hcl	Tamsulosin Hcl	97	29
Clonazepam	Clonazepam	89	16
Alendronate Sodium	Alendronate Sodium	81	25
Metformin Hcl Er	Metformin Hcl	80	22
Citalopram Hbr	Citalopram Hydrobromide	76	21
Rosuvastatin Calcium	Rosuvastatin Calcium	72	25
Escitalopram Oxalate	Escitalopram Oxalate	67	20
Zolpidem Tartrate	Zolpidem Tartrate	66	13
Bupropion Xl	Bupropion Hcl	65	14
Fluticasone Propionate	Fluticasone Propionate	61	24
Ibuprofen	Ibuprofen	60	19
Allopurinol	Allopurinol	56	17
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	55	suppressed
Famotidine	Famotidine	47	16
Buspirone Hcl	Buspirone Hcl	45	16
Fluconazole	Fluconazole	42	26
Pravastatin Sodium	Pravastatin Sodium	42	15
Diazepam	Diazepam	40	suppressed
Ozempic	Semaglutide	38	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	37	suppressed
Duloxetine Hcl	Duloxetine Hcl	36	12
Prednisone	Prednisone	36	13
Warfarin Sodium	Warfarin Sodium	36	suppressed
Oxycodone Hcl	Oxycodone Hcl	35	suppressed
Synthroid	Levothyroxine Sodium	35	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	34	16
Sumatriptan Succinate	Sumatriptan Succinate	34	suppressed
Trulicity	Dulaglutide	34	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	33	18
Quetiapine Fumarate	Quetiapine Fumarate	33	suppressed
Propranolol Hcl Er	Propranolol Hcl	32	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	32	suppressed
Potassium Chloride	Potassium Chloride	29	suppressed
Meloxicam	Meloxicam	28	12
Oxybutynin Chloride Er	Oxybutynin Chloride	28	suppressed
Spironolactone	Spironolactone	28	suppressed
Xarelto	Rivaroxaban	27	suppressed
Glipizide Er	Glipizide	26	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	26	16
Ventolin Hfa	Albuterol Sulfate	26	suppressed
Paroxetine Hcl	Paroxetine Hcl	25	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	24	suppressed
Montelukast Sodium	Montelukast Sodium	24	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	24	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	24	suppressed
Clonidine Hcl	Clonidine Hcl	23	suppressed
Glipizide	Glipizide	22	suppressed
Mounjaro	Tirzepatide	22	suppressed
Pulmicort Flexhaler	Budesonide	22	suppressed
Boostrix Tdap	Diphth,pertuss(Acell),tet Vac	21	21
Bupropion Hcl Sr	Bupropion Hcl	21	suppressed
Irbesartan	Irbesartan	21	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	21	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	21	12
Baclofen	Baclofen	20	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	20	suppressed
Glimepiride	Glimepiride	20	suppressed
Loperamide	Loperamide Hcl	20	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	20	suppressed
Clopidogrel	Clopidogrel Bisulfate	19	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	19	suppressed
Ropinirole Hcl	Ropinirole Hcl	19	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Diclofenac Sodium	Diclofenac Sodium	18	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	18	suppressed
Ondansetron Odt	Ondansetron	18	suppressed
Propranolol Hcl	Propranolol Hcl	18	suppressed
Nystatin	Nystatin	17	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Pregabalin	Pregabalin	16	suppressed
Amiodarone Hcl	Amiodarone Hcl	15	suppressed
Dextroamphetamine-Amphet Er	Dextroamphetamine/Amphetamine	15	suppressed
Hydralazine Hcl	Hydralazine Hcl	15	suppressed
Hydroxyzine Pamoate	Hydroxyzine Pamoate	15	suppressed
Valsartan	Valsartan	15	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	14	suppressed
Carvedilol	Carvedilol	14	suppressed
Myrbetriq	Mirabegron	14	suppressed
Prazosin Hcl	Prazosin Hcl	14	suppressed
Azithromycin	Azithromycin	13	12
Benazepril Hcl	Benazepril Hcl	13	suppressed
Breo Ellipta	Fluticasone/Vilanterol	13	suppressed
Eszopiclone	Eszopiclone	13	suppressed
Ezetimibe	Ezetimibe	13	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	13	suppressed
Ketoconazole	Ketoconazole	13	suppressed
Lamotrigine	Lamotrigine	13	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	13	suppressed
Meclizine Hcl	Meclizine Hcl	13	suppressed
Finasteride	Finasteride	12	suppressed
Jardiance	Empagliflozin	12	suppressed
Levalbuterol Tartrate Hfa	Levalbuterol Tartrate	12	suppressed
Levofloxacin	Levofloxacin	12	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	12	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	12	suppressed
Roflumilast	Roflumilast	12	suppressed
Sildenafil Citrate	Sildenafil Citrate	12	suppressed
Valacyclovir	Valacyclovir Hcl	12	suppressed
Acyclovir	Acyclovir	11	suppressed
Enalapril-Hydrochlorothiazide	Enalapril/Hydrochlorothiazide	11	suppressed
Folic Acid	Folic Acid	11	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	11	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	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