Healthcare provider profile · identity verified

Colin H Combs, MD

Internal Medicine · WHEAT RIDGE, CO · NPI 1740317775

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	1100	308
Losartan Potassium	Losartan Potassium	544	154
Levothyroxine Sodium	Levothyroxine Sodium	511	146
Simvastatin	Simvastatin	496	134
Omeprazole	Omeprazole	446	149
Amlodipine Besylate	Amlodipine Besylate	415	120
Lisinopril	Lisinopril	413	124
Tamsulosin Hcl	Tamsulosin Hcl	412	129
Rosuvastatin Calcium	Rosuvastatin Calcium	322	95
Pradaxa	Dabigatran Etexilate Mesylate	314	100
Metformin Hcl	Metformin Hcl	280	80
Albuterol Sulfate Hfa	Albuterol Sulfate	198	105
Alendronate Sodium	Alendronate Sodium	192	68
Metoprolol Tartrate	Metoprolol Tartrate	190	57
Trazodone Hcl	Trazodone Hcl	184	59
Duloxetine Hcl	Duloxetine Hcl	173	62
Furosemide	Furosemide	170	58
Potassium Chloride	Potassium Chloride	169	57
Allopurinol	Allopurinol	168	51
Hydrochlorothiazide	Hydrochlorothiazide	163	49
Warfarin Sodium	Warfarin Sodium	161	50
Gabapentin	Gabapentin	160	58
Finasteride	Finasteride	147	45
Atenolol	Atenolol	145	40
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	132	41
Sertraline Hcl	Sertraline Hcl	129	37
Pantoprazole Sodium	Pantoprazole Sodium	126	36
Doxazosin Mesylate	Doxazosin Mesylate	124	36
Metoprolol Succinate	Metoprolol Succinate	123	39
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	120	37
Fluoxetine Hcl	Fluoxetine Hcl	114	31
Arexvy	Rsvpref3 Antigen/As01e/Pf	113	113
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	108	13
Glipizide	Glipizide	106	33
Alvesco	Ciclesonide	95	34
Wixela Inhub	Fluticasone Propion/Salmeterol	92	39
Metformin Hcl Er	Metformin Hcl	88	27
Mirtazapine	Mirtazapine	87	30
Ezetimibe	Ezetimibe	82	23
Meloxicam	Meloxicam	81	32
Adacel Tdap	Diph,pertuss(Acell),tet Vac/Pf	71	71
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	69	suppressed
Carvedilol	Carvedilol	63	20
Citalopram Hbr	Citalopram Hydrobromide	63	20
Humulin N	Insulin Nph Human Isophane	61	23
Venlafaxine Hcl Er	Venlafaxine Hcl	60	17
Acyclovir	Acyclovir	58	22
Tramadol Hcl	Tramadol Hcl	57	18
Ketoconazole	Ketoconazole	56	34
Famotidine	Famotidine	55	19
Insulin Glargine-Yfgn	Insulin Glargine-Yfgn	55	22
Triamcinolone Acetonide	Triamcinolone Acetonide	54	27
Jardiance	Empagliflozin	49	16
Ozempic	Semaglutide	49	suppressed
Shingrix	Varicella-Zoster Ge/As01b/Pf	48	45
Clopidogrel	Clopidogrel Bisulfate	47	17
Trospium Chloride	Trospium Chloride	47	15
Eliquis	Apixaban	46	11
Clonazepam	Clonazepam	44	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	44	17
Fluticasone Propionate	Fluticasone Propionate	42	21
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	42	13
Spironolactone	Spironolactone	41	14
Oxycodone Hcl	Oxycodone Hcl	39	suppressed
Prednisone	Prednisone	39	26
Estradiol	Estradiol	38	15
Lorazepam	Lorazepam	38	17
Hydrocortisone	Hydrocortisone	34	11
Escitalopram Oxalate	Escitalopram Oxalate	33	11
Morphine Sulfate Er	Morphine Sulfate	33	suppressed
Pravastatin Sodium	Pravastatin Sodium	33	suppressed
Propranolol Hcl	Propranolol Hcl	32	suppressed
Spiriva Respimat	Tiotropium Bromide	32	12
Bupropion Xl	Bupropion Hcl	31	11
Insulin Syringe	Syringe-Needle,insulin,0.5 Ml	30	13
Lovastatin	Lovastatin	29	suppressed
Azelastine Hcl	Azelastine Hcl	28	suppressed
Cefuroxime	Cefuroxime Axetil	26	24
Dabigatran Etexilate	Dabigatran Etexilate Mesylate	26	26
Terbinafine Hcl	Terbinafine Hcl	26	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	24	suppressed
Humulin R	Insulin Regular, Human	24	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	24	suppressed
Alprazolam	Alprazolam	22	suppressed
Methadone Hcl	Methadone Hcl	22	suppressed
Primidone	Primidone	22	suppressed
Trimethoprim	Trimethoprim	22	suppressed
Cartia Xt	Diltiazem Hcl	20	15
Digoxin	Digoxin	20	suppressed
Fluorouracil	Fluorouracil	20	19
Solifenacin Succinate	Solifenacin Succinate	20	suppressed
Breyna	Budesonide/Formoterol Fumarate	18	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	18	14
Insulin Syringe	Syringe And Needle,insulin,1ml	18	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	17	16
Chlorthalidone	Chlorthalidone	17	suppressed
Clobetasol Propionate	Clobetasol Propionate	16	suppressed
Fenofibrate	Fenofibrate	16	suppressed
Testosterone	Testosterone	16	suppressed
Carbidopa-Levodopa	Carbidopa/Levodopa	15	suppressed
Nystatin	Nystatin	15	suppressed
Pregabalin	Pregabalin	15	suppressed
Cholestyramine Light	Cholestyramine	13	suppressed
Donepezil Hcl	Donepezil Hcl	13	suppressed
Nitroglycerin	Nitroglycerin	13	suppressed
Ultra-Fine Short Pen Needle	Pen Needle, Diabetic	13	suppressed
Humalog	Insulin Lispro	12	suppressed
Insulin Syringe	Syring-Needl,disp,insul,0.3 Ml	12	suppressed
Potassium Citrate Er	Potassium Citrate	12	suppressed
Torsemide	Torsemide	12	suppressed
Amoxicillin	Amoxicillin	11	suppressed
Glimepiride	Glimepiride	11	suppressed
Hydralazine Hcl	Hydralazine Hcl	11	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	11	suppressed
Metronidazole	Metronidazole	11	suppressed
Naloxone Hcl	Naloxone Hcl	11	11
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	11	suppressed
Repatha Sureclick	Evolocumab	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