Healthcare provider profile · identity verified

Bruce Gardner Karlin, MD

Internal Medicine · WORCESTER, MA · NPI 1245311166

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	304	91
Lisinopril	Lisinopril	247	75
Amlodipine Besylate	Amlodipine Besylate	222	70
Oxycodone Hcl	Oxycodone Hcl	184	21
Albuterol Sulfate Hfa	Albuterol Sulfate	131	35
Omeprazole	Omeprazole	126	42
Gabapentin	Gabapentin	120	21
Metformin Hcl	Metformin Hcl	109	26
Pantoprazole Sodium	Pantoprazole Sodium	100	31
Hydrochlorothiazide	Hydrochlorothiazide	87	30
Furosemide	Furosemide	84	22
Metoprolol Succinate	Metoprolol Succinate	83	26
Ibuprofen	Ibuprofen	82	20
Levothyroxine Sodium	Levothyroxine Sodium	67	24
Sertraline Hcl	Sertraline Hcl	65	17
Trazodone Hcl	Trazodone Hcl	61	18
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	60	16
Fluticasone Propionate	Fluticasone Propionate	60	23
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	60	suppressed
Simvastatin	Simvastatin	53	17
Lorazepam	Lorazepam	51	12
Losartan Potassium	Losartan Potassium	49	20
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	47	suppressed
Pregabalin	Pregabalin	45	suppressed
Eliquis	Apixaban	38	11
Ventolin Hfa	Albuterol Sulfate	38	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	37	13
Tamsulosin Hcl	Tamsulosin Hcl	35	13
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	31	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	31	suppressed
Metformin Hcl Er	Metformin Hcl	31	suppressed
Tramadol Hcl	Tramadol Hcl	31	suppressed
Alendronate Sodium	Alendronate Sodium	29	suppressed
Atenolol	Atenolol	29	suppressed
Famotidine	Famotidine	29	11
Ondansetron Hcl	Ondansetron Hcl	29	suppressed
Potassium Chloride	Potassium Chloride	29	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	28	suppressed
Lamotrigine	Lamotrigine	27	suppressed
Allopurinol	Allopurinol	26	suppressed
Pravastatin Sodium	Pravastatin Sodium	26	suppressed
Rosuvastatin Calcium	Rosuvastatin Calcium	25	11
Ezetimibe	Ezetimibe	23	suppressed
Spironolactone	Spironolactone	23	suppressed
Duloxetine Hcl	Duloxetine Hcl	21	suppressed
Propranolol Hcl	Propranolol Hcl	21	suppressed
Carvedilol	Carvedilol	20	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	20	suppressed
Citalopram Hbr	Citalopram Hydrobromide	19	suppressed
Clonazepam	Clonazepam	19	suppressed
Diclofenac Sodium	Diclofenac Sodium	19	suppressed
Divalproex Sodium	Divalproex Sodium	19	suppressed
Finasteride	Finasteride	19	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	19	suppressed
Levetiracetam	Levetiracetam	18	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	17	suppressed
Baclofen	Baclofen	16	suppressed
Glipizide	Glipizide	16	suppressed
Naproxen	Naproxen	16	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	15	suppressed
Ibu	Ibuprofen	15	suppressed
Mirtazapine	Mirtazapine	15	suppressed
Olanzapine	Olanzapine	15	suppressed
Chlorthalidone	Chlorthalidone	14	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	14	suppressed
Meloxicam	Meloxicam	14	suppressed
Diazepam	Diazepam	13	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	13	suppressed
Loperamide	Loperamide Hcl	13	suppressed
Olmesartan Medoxomil	Olmesartan Medoxomil	13	suppressed
Rybelsus	Semaglutide	13	suppressed
Clonidine Hcl	Clonidine Hcl	12	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	12	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	12	suppressed
Naloxone Hcl	Naloxone Hcl	12	suppressed
Trintellix	Vortioxetine Hydrobromide	12	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	11	suppressed
Breo Ellipta	Fluticasone/Vilanterol	11	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	11	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	11	suppressed
Entresto	Sacubitril/Valsartan	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Lidocaine	Lidocaine	11	suppressed
Risperidone	Risperidone	11	suppressed
Terazosin Hcl	Terazosin 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