Healthcare provider profile · identity verified

Jonathan David Lowenthal, MD

Internal Medicine · PRINCE FREDERICK, MD · NPI 1861553711

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
Amlodipine Besylate	Amlodipine Besylate	438	124
Atorvastatin Calcium	Atorvastatin Calcium	396	116
Losartan Potassium	Losartan Potassium	382	103
Metformin Hcl	Metformin Hcl	232	64
Levothyroxine Sodium	Levothyroxine Sodium	219	58
Pantoprazole Sodium	Pantoprazole Sodium	201	63
Rosuvastatin Calcium	Rosuvastatin Calcium	197	64
Metoprolol Succinate	Metoprolol Succinate	173	48
Hydrochlorothiazide	Hydrochlorothiazide	168	49
Simvastatin	Simvastatin	159	42
Escitalopram Oxalate	Escitalopram Oxalate	151	45
Lisinopril	Lisinopril	145	43
Glimepiride	Glimepiride	143	45
Allopurinol	Allopurinol	141	37
Tamsulosin Hcl	Tamsulosin Hcl	130	43
Furosemide	Furosemide	129	44
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	120	36
Eliquis	Apixaban	115	30
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	105	32
Pravastatin Sodium	Pravastatin Sodium	101	28
Atenolol	Atenolol	97	26
Omeprazole	Omeprazole	94	28
Potassium Chloride	Potassium Chloride	92	29
Gabapentin	Gabapentin	88	31
Methylprednisolone	Methylprednisolone	78	63
Albuterol Sulfate Hfa	Albuterol Sulfate	77	29
Montelukast Sodium	Montelukast Sodium	76	23
Trazodone Hcl	Trazodone Hcl	74	21
Tramadol Hcl	Tramadol Hcl	68	17
Bupropion Xl	Bupropion Hcl	66	19
Famotidine	Famotidine	66	19
Sertraline Hcl	Sertraline Hcl	65	23
Alprazolam	Alprazolam	64	13
Metoprolol Tartrate	Metoprolol Tartrate	64	18
Prednisone	Prednisone	59	28
Metformin Hcl Er	Metformin Hcl	54	15
Azithromycin	Azithromycin	52	47
Trulicity	Dulaglutide	52	suppressed
Xarelto	Rivaroxaban	51	15
Pregabalin	Pregabalin	50	suppressed
Spironolactone	Spironolactone	50	13
Fluticasone Propionate	Fluticasone Propionate	49	16
Farxiga	Dapagliflozin Propanediol	47	14
Clopidogrel	Clopidogrel Bisulfate	46	15
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	45	14
Meloxicam	Meloxicam	44	13
Finasteride	Finasteride	41	12
Colchicine	Colchicine	39	suppressed
Mirtazapine	Mirtazapine	38	12
Mounjaro	Tirzepatide	38	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	38	suppressed
Verapamil Er	Verapamil Hcl	38	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	38	suppressed
Duloxetine Hcl	Duloxetine Hcl	36	13
Ketoconazole	Ketoconazole	36	15
Lorazepam	Lorazepam	36	suppressed
Anoro Ellipta	Umeclidinium Brm/Vilanterol Tr	35	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	33	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	33	suppressed
Synthroid	Levothyroxine Sodium	33	12
Breo Ellipta	Fluticasone/Vilanterol	32	suppressed
Diazepam	Diazepam	32	suppressed
Ropinirole Hcl	Ropinirole Hcl	32	suppressed
Warfarin Sodium	Warfarin Sodium	32	suppressed
Celecoxib	Celecoxib	31	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	31	suppressed
Carvedilol	Carvedilol	30	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	29	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	29	20
Hydralazine Hcl	Hydralazine Hcl	28	suppressed
Ipratropium Bromide	Ipratropium Bromide	28	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	28	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	28	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	27	suppressed
Klor-Con M20	Potassium Chloride	25	suppressed
Propranolol Hcl Er	Propranolol Hcl	25	suppressed
Ibuprofen	Ibuprofen	24	13
Symbicort	Budesonide/Formoterol Fumarate	23	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	22	suppressed
Rabeprazole Sodium	Rabeprazole Sodium	21	suppressed
Carbamazepine	Carbamazepine	20	suppressed
Digoxin	Digoxin	20	suppressed
Donepezil Hcl	Donepezil Hcl	20	suppressed
Cefuroxime	Cefuroxime Axetil	19	17
Chlorthalidone	Chlorthalidone	19	suppressed
Methenamine Hippurate	Methenamine Hippurate	19	suppressed
Bumetanide	Bumetanide	18	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	18	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	18	suppressed
Baclofen	Baclofen	17	suppressed
Clonazepam	Clonazepam	17	suppressed
Incruse Ellipta	Umeclidinium Bromide	17	suppressed
Naproxen	Naproxen	17	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	17	suppressed
Valacyclovir	Valacyclovir Hcl	17	suppressed
Clarithromycin	Clarithromycin	16	13
Ezetimibe	Ezetimibe	16	suppressed
Levetiracetam	Levetiracetam	16	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	16	suppressed
Estradiol	Estradiol	15	suppressed
Mupirocin	Mupirocin	15	13
Oxybutynin Chloride Er	Oxybutynin Chloride	15	suppressed
Oxycodone Hcl	Oxycodone Hcl	15	suppressed
Folic Acid	Folic Acid	14	suppressed
Glipizide	Glipizide	14	suppressed
Levofloxacin	Levofloxacin	14	suppressed
Ultra-Fine Mini Pen Needle	Pen Needle, Diabetic	14	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	13	11
Labetalol Hcl	Labetalol Hcl	13	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	13	13
Ramipril	Ramipril	13	suppressed
Azelastine Hcl	Azelastine Hcl	12	suppressed
Febuxostat	Febuxostat	12	suppressed
Lansoprazole	Lansoprazole	12	suppressed
Nitroglycerin	Nitroglycerin	12	suppressed
Promethazine Hcl	Promethazine Hcl	12	suppressed
Sumatriptan Succinate	Sumatriptan Succinate	12	suppressed
Valsartan	Valsartan	12	suppressed
Zenpep	Lipase/Protease/Amylase	12	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	11	suppressed
Cephalexin	Cephalexin	11	suppressed
Ibu	Ibuprofen	11	suppressed
Lactulose	Lactulose	11	suppressed
Methimazole	Methimazole	11	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	11	suppressed
Tresiba Flextouch U-100	Insulin Degludec	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