Healthcare provider profile · identity verified

Michael R Block, MD

Internal Medicine · LOS ANGELES, CA · NPI 1134203656

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	602	184
Metformin Hcl	Metformin Hcl	318	96
Omeprazole	Omeprazole	256	79
Losartan Potassium	Losartan Potassium	254	74
Levothyroxine Sodium	Levothyroxine Sodium	236	63
Amlodipine Besylate	Amlodipine Besylate	215	64
Gabapentin	Gabapentin	215	61
Pantoprazole Sodium	Pantoprazole Sodium	170	52
Furosemide	Furosemide	147	49
Ibuprofen	Ibuprofen	142	49
Tamsulosin Hcl	Tamsulosin Hcl	139	46
Hydrochlorothiazide	Hydrochlorothiazide	136	45
Sertraline Hcl	Sertraline Hcl	135	34
Lisinopril	Lisinopril	119	38
Alprazolam	Alprazolam	109	29
Rosuvastatin Calcium	Rosuvastatin Calcium	99	29
Mirtazapine	Mirtazapine	92	25
Simvastatin	Simvastatin	91	27
Alendronate Sodium	Alendronate Sodium	88	25
Glipizide	Glipizide	88	26
Meclizine Hcl	Meclizine Hcl	86	32
Eliquis	Apixaban	85	20
Metoprolol Succinate	Metoprolol Succinate	84	24
Potassium Chloride	Potassium Chloride	84	23
Lorazepam	Lorazepam	75	17
Azithromycin	Azithromycin	71	56
Januvia	Sitagliptin Phosphate	69	16
Tramadol Hcl	Tramadol Hcl	68	23
Allopurinol	Allopurinol	65	13
Clopidogrel	Clopidogrel Bisulfate	64	18
Carvedilol	Carvedilol	63	21
Albuterol Sulfate Hfa	Albuterol Sulfate	60	16
Benazepril Hcl	Benazepril Hcl	57	15
Azelastine Hcl	Azelastine Hcl	56	20
Triamcinolone Acetonide	Triamcinolone Acetonide	56	26
Zolpidem Tartrate	Zolpidem Tartrate	56	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	54	14
Memantine Hcl	Memantine Hcl	54	14
Fluticasone Propionate	Fluticasone Propionate	52	16
Clonidine Hcl	Clonidine Hcl	50	13
Jardiance	Empagliflozin	50	18
Prednisone	Prednisone	48	21
Diclofenac Sodium	Diclofenac Sodium	47	23
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	47	40
Clonazepam	Clonazepam	45	suppressed
Atenolol	Atenolol	44	13
Meloxicam	Meloxicam	43	16
Chlorthalidone	Chlorthalidone	41	suppressed
Isosorbide Mononitrate Er	Isosorbide Mononitrate	41	12
Glimepiride	Glimepiride	40	11
Hydralazine Hcl	Hydralazine Hcl	39	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	39	11
Enalapril Maleate	Enalapril Maleate	37	11
Famotidine	Famotidine	37	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	37	suppressed
Metoprolol Tartrate	Metoprolol Tartrate	37	12
Montelukast Sodium	Montelukast Sodium	37	12
Dicyclomine Hcl	Dicyclomine Hcl	36	13
Ciprofloxacin Hcl	Ciprofloxacin Hcl	34	24
Synthroid	Levothyroxine Sodium	34	suppressed
Nifedipine Er	Nifedipine	32	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	32	suppressed
Donepezil Hcl	Donepezil Hcl	31	suppressed
Ketoconazole	Ketoconazole	31	19
Sucralfate	Sucralfate	30	suppressed
Naproxen	Naproxen	29	suppressed
Lovastatin	Lovastatin	28	suppressed
Promethazine-Dm	Promethazine/Dextromethorphan	28	20
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	27	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	27	suppressed
Tresiba Flextouch U-100	Insulin Degludec	27	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	25	24
Ozempic	Semaglutide	25	suppressed
Humulin 70-30	Insulin Nph Hum/Reg Insulin Hm	24	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	24	17
Torsemide	Torsemide	24	suppressed
Cephalexin	Cephalexin	23	18
Diazepam	Diazepam	23	suppressed
Duloxetine Hcl	Duloxetine Hcl	23	suppressed
Humalog Kwikpen U-100	Insulin Lispro	23	suppressed
Janumet	Sitagliptin Phos/Metformin Hcl	23	suppressed
Finasteride	Finasteride	22	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	20	suppressed
Dutasteride	Dutasteride	20	suppressed
Levemir Flexpen	Insulin Detemir	20	suppressed
Nebivolol Hcl	Nebivolol Hcl	19	suppressed
Ondansetron Hcl	Ondansetron Hcl	19	suppressed
Comfort Ez Pen Needle	Pen Needle, Diabetic	18	suppressed
Fluocinonide	Fluocinonide	18	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	18	suppressed
Amoxicillin	Amoxicillin	17	12
Ezetimibe	Ezetimibe	17	suppressed
Fluconazole	Fluconazole	17	suppressed
Levetiracetam	Levetiracetam	17	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	17	suppressed
Warfarin Sodium	Warfarin Sodium	17	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	16	suppressed
Glipizide-Metformin	Glipizide/Metformin Hcl	16	suppressed
Hydrocortisone	Hydrocortisone	16	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	16	suppressed
Alcohol Prep Pads	Alcohol Antiseptic Pads	15	suppressed
Baclofen	Baclofen	15	suppressed
Humulin N Kwikpen	Insulin Nph Human Isophane	15	suppressed
Neomycin-Polymyxin-Hydrocort	Neomycin/Polymyxin B/Hydrocort	15	suppressed
Nitroglycerin	Nitroglycerin	15	suppressed
Celecoxib	Celecoxib	14	suppressed
Citalopram Hbr	Citalopram Hydrobromide	14	suppressed
Metolazone	Metolazone	14	suppressed
Metronidazole	Metronidazole	14	12
Paxlovid	Nirmatrelvir/Ritonavir	14	14
Comfort Ez Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	13	suppressed
Eszopiclone	Eszopiclone	13	suppressed
Pravastatin Sodium	Pravastatin Sodium	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	12	suppressed
Bupropion Xl	Bupropion Hcl	12	suppressed
Ciclopirox	Ciclopirox	12	suppressed
Mupirocin	Mupirocin	12	suppressed
Myrbetriq	Mirabegron	12	suppressed
Temazepam	Temazepam	12	suppressed
Trazodone Hcl	Trazodone Hcl	12	suppressed
Trulicity	Dulaglutide	12	suppressed
Breo Ellipta	Fluticasone/Vilanterol	11	suppressed
Brimonidine Tartrate	Brimonidine Tartrate	11	suppressed
Clotrimazole	Clotrimazole	11	suppressed
Loperamide	Loperamide Hcl	11	suppressed
Methylprednisolone	Methylprednisolone	11	11
Neomycin-Polymyxin-Dexameth	Neomycin/Polymyxin B/Dexametha	11	11
Spironolactone	Spironolactone	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