Healthcare provider profile · identity verified

Lawrence E Colassacco, MD

Family Practice · DEPERE, WI · NPI 1366451429

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	564	141
Amlodipine Besylate	Amlodipine Besylate	396	97
Pantoprazole Sodium	Pantoprazole Sodium	331	87
Rosuvastatin Calcium	Rosuvastatin Calcium	279	72
Lisinopril	Lisinopril	253	61
Levothyroxine Sodium	Levothyroxine Sodium	237	47
Hydrochlorothiazide	Hydrochlorothiazide	201	54
Losartan Potassium	Losartan Potassium	179	46
Metformin Hcl	Metformin Hcl	165	43
Metoprolol Succinate	Metoprolol Succinate	165	41
Omeprazole	Omeprazole	162	43
Tamsulosin Hcl	Tamsulosin Hcl	157	37
Potassium Chloride	Potassium Chloride	145	30
Olmesartan Medoxomil	Olmesartan Medoxomil	141	38
Trazodone Hcl	Trazodone Hcl	130	31
Escitalopram Oxalate	Escitalopram Oxalate	125	34
Simvastatin	Simvastatin	122	30
Atenolol	Atenolol	114	26
Furosemide	Furosemide	110	28
Gabapentin	Gabapentin	110	25
Mounjaro	Tirzepatide	103	17
Sertraline Hcl	Sertraline Hcl	100	23
Allopurinol	Allopurinol	97	31
Albuterol Sulfate Hfa	Albuterol Sulfate	95	31
Eliquis	Apixaban	89	19
Pravastatin Sodium	Pravastatin Sodium	81	20
Fluticasone Propionate	Fluticasone Propionate	74	31
Meloxicam	Meloxicam	73	26
Bupropion Xl	Bupropion Hcl	71	19
Glipizide	Glipizide	70	19
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	69	17
Venlafaxine Hcl Er	Venlafaxine Hcl	67	12
Finasteride	Finasteride	65	14
Jardiance	Empagliflozin	63	12
Pregabalin	Pregabalin	62	suppressed
Duloxetine Hcl	Duloxetine Hcl	61	16
Valsartan	Valsartan	60	14
Montelukast Sodium	Montelukast Sodium	56	12
Xarelto	Rivaroxaban	56	11
Donepezil Hcl	Donepezil Hcl	54	suppressed
Metformin Hcl Er	Metformin Hcl	54	15
Tizanidine Hcl	Tizanidine Hcl	54	20
Spironolactone	Spironolactone	53	13
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	50	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	50	11
Hydroxyzine Hcl	Hydroxyzine Hcl	50	19
Ketoconazole	Ketoconazole	49	13
Fluoxetine Hcl	Fluoxetine Hcl	48	13
Metoprolol Tartrate	Metoprolol Tartrate	45	14
Amoxicillin	Amoxicillin	43	24
Ozempic	Semaglutide	43	suppressed
Famotidine	Famotidine	42	14
Warfarin Sodium	Warfarin Sodium	42	11
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	41	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	41	13
Buspirone Hcl	Buspirone Hcl	40	11
Diclofenac Sodium	Diclofenac Sodium	40	18
Paroxetine Hcl	Paroxetine Hcl	38	suppressed
Carvedilol	Carvedilol	35	suppressed
Clonazepam	Clonazepam	34	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	34	suppressed
Azithromycin	Azithromycin	32	28
Lorazepam	Lorazepam	32	suppressed
Prednisone	Prednisone	30	21
Temazepam	Temazepam	30	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	29	26
Celecoxib	Celecoxib	29	13
Alendronate Sodium	Alendronate Sodium	28	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	27	suppressed
Alprazolam	Alprazolam	26	15
Amitriptyline Hcl	Amitriptyline Hcl	26	suppressed
Clopidogrel	Clopidogrel Bisulfate	26	suppressed
Colchicine	Colchicine	26	14
Oxybutynin Chloride Er	Oxybutynin Chloride	26	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	25	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	24	12
Isosorbide Mononitrate Er	Isosorbide Mononitrate	23	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	23	22
Chlorthalidone	Chlorthalidone	22	suppressed
Enalapril Maleate	Enalapril Maleate	22	suppressed
Myrbetriq	Mirabegron	21	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	21	suppressed
Synthroid	Levothyroxine Sodium	21	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	20	11
Prochlorperazine Maleate	Prochlorperazine Maleate	20	suppressed
Tramadol Hcl	Tramadol Hcl	20	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	20	suppressed
Valacyclovir	Valacyclovir Hcl	20	suppressed
Ondansetron Odt	Ondansetron	19	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	18	suppressed
Olmesartan-Hydrochlorothiazide	Olmesartan/Hydrochlorothiazide	18	suppressed
Baclofen	Baclofen	17	suppressed
Naltrexone Hcl	Naltrexone Hcl	17	suppressed
Novolog Mix 70-30 Flexpen	Insulin Aspart Prot/Insuln Asp	17	suppressed
Nystatin	Nystatin	17	suppressed
Oxcarbazepine	Oxcarbazepine	17	suppressed
Bumetanide	Bumetanide	16	suppressed
Dutasteride	Dutasteride	16	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	16	suppressed
Rabeprazole Sodium	Rabeprazole Sodium	16	suppressed
Irbesartan	Irbesartan	15	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	15	suppressed
Levocetirizine Dihydrochloride	Levocetirizine Dihydrochloride	15	suppressed
Symbicort	Budesonide/Formoterol Fumarate	15	suppressed
Terazosin Hcl	Terazosin Hcl	15	suppressed
Testosterone Cypionate	Testosterone Cypionate	15	suppressed
Valsartan-Hydrochlorothiazide	Valsartan/Hydrochlorothiazide	15	suppressed
Varenicline Tartrate	Varenicline Tartrate	15	suppressed
Clonidine Hcl	Clonidine Hcl	14	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	14	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	14	suppressed
Nebivolol Hcl	Nebivolol Hcl	14	suppressed
Torsemide	Torsemide	14	suppressed
Ezetimibe	Ezetimibe	13	suppressed
Imipramine Hcl	Imipramine Hcl	13	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	13	12
Quetiapine Fumarate Er	Quetiapine Fumarate	13	suppressed
Aripiprazole	Aripiprazole	12	suppressed
Austedo	Deutetrabenazine	12	suppressed
Cephalexin	Cephalexin	12	11
Ciprofloxacin Hcl	Ciprofloxacin Hcl	12	suppressed
Humalog Kwikpen U-100	Insulin Lispro	12	suppressed
Ibuprofen	Ibuprofen	12	suppressed
Klor-Con M20	Potassium Chloride	12	suppressed
Ondansetron Hcl	Ondansetron Hcl	12	suppressed
Ramipril	Ramipril	12	suppressed
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	11	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	11	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	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