Healthcare provider profile · identity verified

William Lamb, DO

Internal Medicine · PITTSBURGH, PA · NPI 1235103359

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	720	243
Amlodipine Besylate	Amlodipine Besylate	442	135
Lisinopril	Lisinopril	442	142
Levothyroxine Sodium	Levothyroxine Sodium	418	127
Metformin Hcl	Metformin Hcl	266	87
Omeprazole	Omeprazole	266	100
Rosuvastatin Calcium	Rosuvastatin Calcium	254	90
Losartan Potassium	Losartan Potassium	236	72
Simvastatin	Simvastatin	210	71
Metoprolol Tartrate	Metoprolol Tartrate	187	59
Eliquis	Apixaban	165	42
Hydrochlorothiazide	Hydrochlorothiazide	155	53
Valsartan	Valsartan	154	54
Tamsulosin Hcl	Tamsulosin Hcl	138	40
Lorazepam	Lorazepam	137	40
Trazodone Hcl	Trazodone Hcl	137	40
Famotidine	Famotidine	136	40
Gabapentin	Gabapentin	132	44
Furosemide	Furosemide	131	47
Jardiance	Empagliflozin	121	34
Alprazolam	Alprazolam	112	35
Metoprolol Succinate	Metoprolol Succinate	109	36
Prednisone	Prednisone	107	48
Allopurinol	Allopurinol	104	30
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	104	23
Pantoprazole Sodium	Pantoprazole Sodium	104	39
Carvedilol	Carvedilol	93	31
Albuterol Sulfate Hfa	Albuterol Sulfate	88	31
Tramadol Hcl	Tramadol Hcl	88	25
Citalopram Hbr	Citalopram Hydrobromide	85	23
Synthroid	Levothyroxine Sodium	85	23
Meloxicam	Meloxicam	80	31
Sertraline Hcl	Sertraline Hcl	80	29
Clopidogrel	Clopidogrel Bisulfate	79	25
Alendronate Sodium	Alendronate Sodium	71	26
Potassium Chloride	Potassium Chloride	71	22
Pravastatin Sodium	Pravastatin Sodium	61	23
Fluticasone Propionate	Fluticasone Propionate	58	19
Zolpidem Tartrate	Zolpidem Tartrate	56	16
Clonidine Hcl	Clonidine Hcl	55	16
Duloxetine Hcl	Duloxetine Hcl	55	14
Atenolol	Atenolol	52	21
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	50	43
Celecoxib	Celecoxib	50	21
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	48	15
Buspirone Hcl	Buspirone Hcl	47	15
Venlafaxine Hcl Er	Venlafaxine Hcl	47	14
Glimepiride	Glimepiride	43	15
Paroxetine Hcl	Paroxetine Hcl	43	16
Ezetimibe	Ezetimibe	42	16
Spironolactone	Spironolactone	42	15
Clonazepam	Clonazepam	41	suppressed
Finasteride	Finasteride	38	12
Ozempic	Semaglutide	38	suppressed
Temazepam	Temazepam	38	suppressed
Ibuprofen	Ibuprofen	37	14
Warfarin Sodium	Warfarin Sodium	37	11
Methylprednisolone	Methylprednisolone	34	27
Montelukast Sodium	Montelukast Sodium	34	suppressed
Ropinirole Hcl	Ropinirole Hcl	31	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	30	suppressed
Oxycodone Hcl	Oxycodone Hcl	30	11
Propranolol Hcl	Propranolol Hcl	30	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	29	12
Metformin Hcl Er	Metformin Hcl	29	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	29	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	28	suppressed
Chlorzoxazone	Chlorzoxazone	28	16
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	28	11
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	27	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	26	12
Donepezil Hcl	Donepezil Hcl	26	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	26	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	25	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	25	22
Ibu	Ibuprofen	25	12
Ondansetron Hcl	Ondansetron Hcl	25	14
Cephalexin	Cephalexin	24	14
Nitrofurantoin	Nitrofurantoin Macrocrystal	24	22
Azithromycin	Azithromycin	23	22
Diazepam	Diazepam	23	suppressed
Jantoven	Warfarin Sodium	23	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	23	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	23	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	23	suppressed
Methocarbamol	Methocarbamol	22	suppressed
Naproxen	Naproxen	22	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	21	suppressed
Advair Hfa	Fluticasone Propion/Salmeterol	20	suppressed
Arnuity Ellipta	Fluticasone Furoate	20	suppressed
Irbesartan	Irbesartan	20	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	20	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	20	suppressed
Trulicity	Dulaglutide	20	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	19	suppressed
Ventolin Hfa	Albuterol Sulfate	19	suppressed
Baclofen	Baclofen	18	suppressed
Entresto	Sacubitril/Valsartan	18	suppressed
Meclizine Hcl	Meclizine Hcl	18	12
Amoxicillin	Amoxicillin	16	15
Isosorbide Mononitrate Er	Isosorbide Mononitrate	16	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	16	suppressed
Glipizide	Glipizide	15	suppressed
Tradjenta	Linagliptin	15	suppressed
Bupropion Hcl	Bupropion Hcl	14	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	14	suppressed
Hydralazine Hcl	Hydralazine Hcl	14	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	14	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	14	suppressed
Acyclovir	Acyclovir	13	suppressed
Cimetidine	Cimetidine	13	suppressed
Digoxin	Digoxin	13	suppressed
Enalapril Maleate	Enalapril Maleate	13	suppressed
Lansoprazole	Lansoprazole	13	suppressed
Mirtazapine	Mirtazapine	13	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	13	suppressed
Torsemide	Torsemide	13	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	12	suppressed
Armour Thyroid	Thyroid,pork	12	suppressed
Carisoprodol	Carisoprodol	12	suppressed
Omega-3 Acid Ethyl Esters	Omega-3 Acid Ethyl Esters	12	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	12	11
Tiotropium Bromide	Tiotropium Bromide	12	suppressed
Xarelto	Rivaroxaban	12	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	11	11
Valacyclovir	Valacyclovir 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

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