Healthcare provider profile · identity verified

Samar Chamas, MD

Family Practice · DETROIT, MI · NPI 1902395908

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	663	222
Amlodipine Besylate	Amlodipine Besylate	437	144
Losartan Potassium	Losartan Potassium	415	136
Lisinopril	Lisinopril	319	89
Metformin Hcl	Metformin Hcl	284	88
Levothyroxine Sodium	Levothyroxine Sodium	259	82
Metoprolol Succinate	Metoprolol Succinate	227	77
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	199	43
Omeprazole	Omeprazole	198	70
Hydrochlorothiazide	Hydrochlorothiazide	179	55
Nifedipine Er	Nifedipine	159	53
Simvastatin	Simvastatin	149	47
Gabapentin	Gabapentin	143	53
Furosemide	Furosemide	128	47
Ozempic	Semaglutide	127	35
Albuterol Sulfate Hfa	Albuterol Sulfate	120	41
Eliquis	Apixaban	118	38
Fluticasone Propionate	Fluticasone Propionate	111	51
Metoprolol Tartrate	Metoprolol Tartrate	109	28
Rosuvastatin Calcium	Rosuvastatin Calcium	106	36
Jardiance	Empagliflozin	103	33
Allopurinol	Allopurinol	96	29
Metformin Hcl Er	Metformin Hcl	93	30
Alprazolam	Alprazolam	77	28
Mounjaro	Tirzepatide	76	15
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	74	24
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	71	23
Pantoprazole Sodium	Pantoprazole Sodium	70	30
Sertraline Hcl	Sertraline Hcl	69	25
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	68	26
Tamsulosin Hcl	Tamsulosin Hcl	68	29
Famotidine	Famotidine	64	24
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	63	21
Ibuprofen	Ibuprofen	57	28
Pravastatin Sodium	Pravastatin Sodium	57	18
Abrysvo	Rsv Vacc, Pref A And Pref B/Pf	54	54
Carvedilol	Carvedilol	54	20
Glipizide Er	Glipizide	52	20
Trulicity	Dulaglutide	51	13
Trazodone Hcl	Trazodone Hcl	48	15
Tramadol Hcl	Tramadol Hcl	47	12
Glipizide	Glipizide	46	14
Duloxetine Hcl	Duloxetine Hcl	43	15
Zolpidem Tartrate	Zolpidem Tartrate	43	suppressed
Spironolactone	Spironolactone	40	15
Chlorthalidone	Chlorthalidone	39	13
Warfarin Sodium	Warfarin Sodium	39	12
Atenolol	Atenolol	38	13
Azithromycin	Azithromycin	38	29
Diclofenac Sodium	Diclofenac Sodium	37	18
Hydrocortisone	Hydrocortisone	36	17
Methylprednisolone	Methylprednisolone	36	30
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	34	15
Montelukast Sodium	Montelukast Sodium	34	17
Potassium Chloride	Potassium Chloride	34	17
Tizanidine Hcl	Tizanidine Hcl	32	12
Methocarbamol	Methocarbamol	31	19
Nystop	Nystatin	31	14
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	30	12
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	29	13
Shingrix	Varicella-Zoster Ge/As01b/Pf	29	23
Ventolin Hfa	Albuterol Sulfate	29	16
Acetaminophen-Codeine	Acetaminophen With Codeine	28	suppressed
Alendronate Sodium	Alendronate Sodium	27	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	26	16
Doxycycline Hyclate	Doxycycline Hyclate	24	21
Symbicort	Budesonide/Formoterol Fumarate	24	suppressed
Boostrix Tdap	Diphth,pertuss(Acell),tet Vac	23	23
Clopidogrel	Clopidogrel Bisulfate	23	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	23	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	23	11
Donepezil Hcl	Donepezil Hcl	21	suppressed
Mirtazapine	Mirtazapine	21	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	20	suppressed
Hydralazine Hcl	Hydralazine Hcl	20	suppressed
Novolog Flexpen	Insulin Aspart	20	suppressed
Sotalol	Sotalol Hcl	20	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	19	17
Lidocaine	Lidocaine	19	12
Lorazepam	Lorazepam	19	suppressed
Oxycodone Hcl	Oxycodone Hcl	19	suppressed
Pregabalin	Pregabalin	19	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	19	suppressed
Benzonatate	Benzonatate	18	suppressed
Ezetimibe	Ezetimibe	18	suppressed
Januvia	Sitagliptin Phosphate	18	suppressed
Xarelto	Rivaroxaban	18	suppressed
Citalopram Hbr	Citalopram Hydrobromide	17	suppressed
Felodipine Er	Felodipine	17	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	17	suppressed
Paroxetine Hcl	Paroxetine Hcl	17	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Calcitriol	Calcitriol	16	suppressed
Meloxicam	Meloxicam	16	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	16	suppressed
Folic Acid	Folic Acid	15	suppressed
Klor-Con M20	Potassium Chloride	15	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	14	suppressed
Fluconazole	Fluconazole	14	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	14	suppressed
Lamotrigine	Lamotrigine	14	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	14	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	14	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	14	suppressed
Estradiol	Estradiol	13	suppressed
Ipratropium Bromide	Ipratropium Bromide	13	suppressed
Levetiracetam	Levetiracetam	13	suppressed
Nadolol	Nadolol	13	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	12	suppressed
Prednisone	Prednisone	12	11
Propranolol Hcl Er	Propranolol Hcl	12	suppressed
Synthroid	Levothyroxine Sodium	12	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	12	suppressed
Celecoxib	Celecoxib	11	suppressed
Clonidine Hcl	Clonidine Hcl	11	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	11	suppressed
Colchicine	Colchicine	11	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Linzess	Linaclotide	11	suppressed
Mupirocin	Mupirocin	11	suppressed
Spiriva Respimat	Tiotropium Bromide	11	suppressed
Tiotropium Bromide	Tiotropium Bromide	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