Healthcare provider profile · identity verified

Ross P Chambers, MD

Family Practice · MILACA, MN · NPI 1538107891

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
Losartan Potassium	Losartan Potassium	280	75
Atorvastatin Calcium	Atorvastatin Calcium	274	81
Simvastatin	Simvastatin	212	59
Gabapentin	Gabapentin	187	51
Lisinopril	Lisinopril	179	53
Omeprazole	Omeprazole	159	41
Metoprolol Succinate	Metoprolol Succinate	153	57
Levothyroxine Sodium	Levothyroxine Sodium	140	41
Metformin Hcl Er	Metformin Hcl	128	32
Amlodipine Besylate	Amlodipine Besylate	123	42
Oxycodone Hcl	Oxycodone Hcl	121	12
Metoprolol Tartrate	Metoprolol Tartrate	104	24
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	95	16
Furosemide	Furosemide	89	38
Albuterol Sulfate Hfa	Albuterol Sulfate	88	32
Hydrochlorothiazide	Hydrochlorothiazide	87	29
Metformin Hcl	Metformin Hcl	71	29
Carvedilol	Carvedilol	69	15
Rosuvastatin Calcium	Rosuvastatin Calcium	66	18
Sertraline Hcl	Sertraline Hcl	66	21
Tamsulosin Hcl	Tamsulosin Hcl	61	22
Alprazolam	Alprazolam	55	12
Finasteride	Finasteride	53	13
Atenolol	Atenolol	52	17
Jantoven	Warfarin Sodium	52	18
Clopidogrel	Clopidogrel Bisulfate	51	16
Jardiance	Empagliflozin	51	suppressed
Citalopram Hbr	Citalopram Hydrobromide	50	13
Escitalopram Oxalate	Escitalopram Oxalate	50	suppressed
Fluticasone Propionate	Fluticasone Propionate	48	26
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	48	13
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	48	13
Lorazepam	Lorazepam	44	12
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	43	15
Alendronate Sodium	Alendronate Sodium	42	suppressed
Allopurinol	Allopurinol	42	16
Glipizide Er	Glipizide	41	12
Montelukast Sodium	Montelukast Sodium	41	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	40	suppressed
Pantoprazole Sodium	Pantoprazole Sodium	39	12
Pravastatin Sodium	Pravastatin Sodium	38	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	35	suppressed
Warfarin Sodium	Warfarin Sodium	35	suppressed
Tramadol Hcl	Tramadol Hcl	34	11
Prednisone	Prednisone	33	19
Clonazepam	Clonazepam	31	suppressed
Diazepam	Diazepam	30	suppressed
Pregabalin	Pregabalin	30	suppressed
Duloxetine Hcl	Duloxetine Hcl	29	suppressed
Baclofen	Baclofen	27	suppressed
Eliquis	Apixaban	27	suppressed
Spironolactone	Spironolactone	27	suppressed
Terazosin Hcl	Terazosin Hcl	27	suppressed
Bupropion Xl	Bupropion Hcl	26	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	26	14
Tizanidine Hcl	Tizanidine Hcl	26	suppressed
Meloxicam	Meloxicam	25	12
Mirtazapine	Mirtazapine	25	suppressed
Sucralfate	Sucralfate	25	suppressed
Phenobarbital	Phenobarbital	24	suppressed
Breo Ellipta	Fluticasone/Vilanterol	23	suppressed
Glipizide	Glipizide	23	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	22	suppressed
Stiolto Respimat	Tiotropium Br/Olodaterol Hcl	22	suppressed
Xarelto	Rivaroxaban	22	suppressed
Clonidine Hcl	Clonidine Hcl	21	suppressed
Dextroamphetamine-Amphetamine	Dextroamphetamine/Amphetamine	21	suppressed
Donepezil Hcl	Donepezil Hcl	21	suppressed
Januvia	Sitagliptin Phosphate	21	suppressed
Propranolol Hcl	Propranolol Hcl	21	suppressed
Trazodone Hcl	Trazodone Hcl	20	suppressed
Levetiracetam	Levetiracetam	19	suppressed
Valacyclovir	Valacyclovir Hcl	19	suppressed
Celecoxib	Celecoxib	18	suppressed
Klor-Con M20	Potassium Chloride	18	suppressed
Phenytoin Sodium Extended	Phenytoin Sodium Extended	18	suppressed
Potassium Chloride	Potassium Chloride	18	suppressed
Spiriva Respimat	Tiotropium Bromide	18	suppressed
Ventolin Hfa	Albuterol Sulfate	18	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	18	suppressed
Estradiol	Estradiol	17	suppressed
Methocarbamol	Methocarbamol	17	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	17	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	16	16
Azithromycin	Azithromycin	16	15
Nitroglycerin	Nitroglycerin	16	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	16	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	16	14
Glimepiride	Glimepiride	15	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	14	suppressed
Fenofibrate	Fenofibrate	14	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	14	suppressed
Torsemide	Torsemide	14	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	13	suppressed
Combivent Respimat	Ipratropium/Albuterol Sulfate	13	suppressed
Enalapril Maleate	Enalapril Maleate	13	suppressed
Insulin Lispro Kwikpen U-100	Insulin Lispro	13	suppressed
Spiriva Handihaler	Tiotropium Bromide	13	suppressed
Trikafta	Elexacaftor/Tezacaftor/Ivacaft	13	suppressed
Bumetanide	Bumetanide	12	suppressed
Carbamazepine Er	Carbamazepine	12	suppressed
Insulin Aspart Flexpen	Insulin Aspart	12	suppressed
Methylphenidate Hcl Er (Cd)	Methylphenidate Hcl	12	suppressed
Mometasone Furoate	Mometasone Furoate	12	suppressed
Morphine Sulfate Er	Morphine Sulfate	12	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	12	12
Sotalol	Sotalol Hcl	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Carbamazepine	Carbamazepine	11	suppressed
Ezetimibe	Ezetimibe	11	suppressed
Latanoprost	Latanoprost	11	suppressed
Paroxetine Hcl	Paroxetine Hcl	11	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	11	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Ultra-Fine Nano Pen Needle	Pen Needle, Diabetic	11	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	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