Healthcare provider profile · identity verified

Lydia Zuser, M.D.

Internal Medicine · HAVERHILL, MA · NPI 1437150505

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
Levothyroxine Sodium	Levothyroxine Sodium	642	159
Atorvastatin Calcium	Atorvastatin Calcium	501	134
Amlodipine Besylate	Amlodipine Besylate	368	116
Lisinopril	Lisinopril	325	92
Omeprazole	Omeprazole	314	87
Metoprolol Succinate	Metoprolol Succinate	271	81
Lorazepam	Lorazepam	264	52
Hydrochlorothiazide	Hydrochlorothiazide	254	68
Alprazolam	Alprazolam	218	44
Losartan Potassium	Losartan Potassium	191	51
Albuterol Sulfate Hfa	Albuterol Sulfate	184	50
Gabapentin	Gabapentin	178	45
Simvastatin	Simvastatin	174	50
Metoprolol Tartrate	Metoprolol Tartrate	161	40
Atenolol	Atenolol	148	37
Furosemide	Furosemide	147	48
Pravastatin Sodium	Pravastatin Sodium	137	37
Sertraline Hcl	Sertraline Hcl	137	37
Rosuvastatin Calcium	Rosuvastatin Calcium	135	36
Clonazepam	Clonazepam	134	22
Metformin Hcl	Metformin Hcl	130	42
Trazodone Hcl	Trazodone Hcl	118	29
Pantoprazole Sodium	Pantoprazole Sodium	108	32
Citalopram Hbr	Citalopram Hydrobromide	93	28
Synthroid	Levothyroxine Sodium	89	25
Allopurinol	Allopurinol	86	24
Donepezil Hcl	Donepezil Hcl	84	15
Paroxetine Hcl	Paroxetine Hcl	80	19
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	79	22
Meloxicam	Meloxicam	73	16
Trulicity	Dulaglutide	73	suppressed
Eliquis	Apixaban	70	16
Tamsulosin Hcl	Tamsulosin Hcl	69	21
Duloxetine Hcl	Duloxetine Hcl	66	17
Ezetimibe	Ezetimibe	66	20
Ibuprofen	Ibuprofen	66	17
Breo Ellipta	Fluticasone/Vilanterol	64	11
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	63	suppressed
Enalapril Maleate	Enalapril Maleate	59	16
Fluticasone Propionate	Fluticasone Propionate	57	22
Lamotrigine	Lamotrigine	57	13
Lovastatin	Lovastatin	57	17
Montelukast Sodium	Montelukast Sodium	56	14
Januvia	Sitagliptin Phosphate	54	13
Oxycodone Hcl	Oxycodone Hcl	54	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	51	15
Tramadol Hcl	Tramadol Hcl	51	19
Potassium Chloride	Potassium Chloride	49	18
Famotidine	Famotidine	48	13
Olmesartan Medoxomil	Olmesartan Medoxomil	48	12
Triamcinolone Acetonide	Triamcinolone Acetonide	48	20
Diazepam	Diazepam	46	11
Nystatin	Nystatin	44	23
Amitriptyline Hcl	Amitriptyline Hcl	42	11
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	40	12
Prednisone	Prednisone	40	suppressed
Pregabalin	Pregabalin	39	suppressed
Venlafaxine Hcl	Venlafaxine Hcl	39	suppressed
Azithromycin	Azithromycin	38	29
Clopidogrel	Clopidogrel Bisulfate	38	11
Memantine Hcl	Memantine Hcl	38	suppressed
Propranolol Hcl	Propranolol Hcl	38	suppressed
Bumetanide	Bumetanide	37	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	37	suppressed
Glipizide	Glipizide	36	11
Oxybutynin Chloride	Oxybutynin Chloride	36	11
Valsartan	Valsartan	35	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	34	suppressed
Hydralazine Hcl	Hydralazine Hcl	34	12
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	34	11
Glimepiride	Glimepiride	33	11
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	33	27
Propranolol Hcl Er	Propranolol Hcl	33	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	32	suppressed
Ropinirole Hcl	Ropinirole Hcl	32	11
Benazepril Hcl	Benazepril Hcl	31	suppressed
Jardiance	Empagliflozin	31	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	30	11
Methylprednisolone	Methylprednisolone	29	25
Bupropion Xl	Bupropion Hcl	28	suppressed
Cephalexin	Cephalexin	28	13
Spironolactone	Spironolactone	28	11
Olanzapine	Olanzapine	27	suppressed
Ozempic	Semaglutide	27	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	27	22
Acyclovir	Acyclovir	26	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	26	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	26	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	25	15
Valacyclovir	Valacyclovir Hcl	25	suppressed
Warfarin Sodium	Warfarin Sodium	25	suppressed
Alendronate Sodium	Alendronate Sodium	24	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	24	suppressed
Naproxen	Naproxen	24	suppressed
Ondansetron Hcl	Ondansetron Hcl	24	suppressed
Baclofen	Baclofen	23	suppressed
Meclizine Hcl	Meclizine Hcl	22	14
Rybelsus	Semaglutide	22	suppressed
Carvedilol	Carvedilol	21	suppressed
Diclofenac Sodium	Diclofenac Sodium	21	suppressed
Mounjaro	Tirzepatide	21	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	20	suppressed
Temazepam	Temazepam	20	suppressed
Doxycycline Monohydrate	Doxycycline Monohydrate	19	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	18	suppressed
Bupropion Hcl	Bupropion Hcl	18	suppressed
Fenofibrate	Fenofibrate	18	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	18	suppressed
Methotrexate	Methotrexate Sodium	17	suppressed
Tizanidine Hcl	Tizanidine Hcl	17	suppressed
Dilt-Xr	Diltiazem Hcl	16	suppressed
Klor-Con M20	Potassium Chloride	16	suppressed
Mirtazapine	Mirtazapine	16	suppressed
Amoxicillin	Amoxicillin	15	14
Ciprofloxacin Hcl	Ciprofloxacin Hcl	15	15
Diltiazem Hcl	Diltiazem Hcl	15	suppressed
Fenofibrate	Fenofibrate,micronized	15	suppressed
Jentadueto	Linagliptin/Metformin Hcl	15	suppressed
Topiramate	Topiramate	15	suppressed
Tradjenta	Linagliptin	15	suppressed
Estradiol	Estradiol	14	suppressed
Farxiga	Dapagliflozin Propanediol	14	suppressed
Gemfibrozil	Gemfibrozil	14	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	14	suppressed
Labetalol Hcl	Labetalol Hcl	14	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	14	suppressed
Methenamine Hippurate	Methenamine Hippurate	14	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	14	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	14	suppressed
Verapamil Er	Verapamil Hcl	14	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	14	suppressed
Breztri Aerosphere	Budesonide/Glycopyr/Formoterol	13	suppressed
Chlorhexidine Gluconate	Chlorhexidine Gluconate	13	suppressed
Clindamycin Phosphate	Clindamycin Phosphate	13	suppressed
Hydrocortisone	Hydrocortisone	13	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	13	suppressed
Xarelto	Rivaroxaban	13	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	12	suppressed
Fluconazole	Fluconazole	12	suppressed
Gemtesa	Vibegron	12	suppressed
Levoxyl	Levothyroxine Sodium	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Sulfasalazine	Sulfasalazine	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Trintellix	Vortioxetine Hydrobromide	12	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	11	suppressed
Celecoxib	Celecoxib	11	suppressed
Enalapril-Hydrochlorothiazide	Enalapril/Hydrochlorothiazide	11	suppressed
Finasteride	Finasteride	11	suppressed
Fluticasone-Salmeterol Hfa	Fluticasone Propion/Salmeterol	11	suppressed
Glipizide Er	Glipizide	11	suppressed
Irbesartan	Irbesartan	11	suppressed
Klor-Con M10	Potassium Chloride	11	suppressed
Metformin Hcl Er	Metformin Hcl	11	suppressed
Symbicort	Budesonide/Formoterol Fumarate	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