Healthcare provider profile · identity verified

Gregory S Holst, MD

Family Practice · EUREKA, CA · NPI 1881601615

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	626	169
Rosuvastatin Calcium	Rosuvastatin Calcium	623	173
Atorvastatin Calcium	Atorvastatin Calcium	421	112
Lisinopril	Lisinopril	304	80
Levothyroxine Sodium	Levothyroxine Sodium	253	70
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	228	36
Amlodipine Besylate	Amlodipine Besylate	224	67
Gabapentin	Gabapentin	209	70
Tamsulosin Hcl	Tamsulosin Hcl	183	51
Omeprazole	Omeprazole	182	54
Hydrochlorothiazide	Hydrochlorothiazide	175	53
Trazodone Hcl	Trazodone Hcl	174	51
Simvastatin	Simvastatin	172	50
Eliquis	Apixaban	168	33
Sertraline Hcl	Sertraline Hcl	163	43
Metoprolol Succinate	Metoprolol Succinate	149	45
Pantoprazole Sodium	Pantoprazole Sodium	130	43
Pregabalin	Pregabalin	129	27
Fluoxetine Hcl	Fluoxetine Hcl	110	28
Metformin Hcl Er	Metformin Hcl	107	32
Allopurinol	Allopurinol	103	23
Mirtazapine	Mirtazapine	95	22
Metformin Hcl	Metformin Hcl	90	25
Potassium Chloride	Potassium Chloride	83	26
Indapamide	Indapamide	75	22
Escitalopram Oxalate	Escitalopram Oxalate	73	18
Albuterol Sulfate Hfa	Albuterol Sulfate	69	34
Carvedilol	Carvedilol	68	12
Montelukast Sodium	Montelukast Sodium	68	19
Spironolactone	Spironolactone	64	17
Pioglitazone Hcl	Pioglitazone Hcl	61	16
Tizanidine Hcl	Tizanidine Hcl	61	25
Furosemide	Furosemide	60	16
Ibuprofen	Ibuprofen	57	13
Ozempic	Semaglutide	57	14
Atenolol	Atenolol	54	14
Quetiapine Fumarate	Quetiapine Fumarate	53	suppressed
Trulicity	Dulaglutide	51	11
Azelastine Hcl	Azelastine Hcl	49	15
Citalopram Hbr	Citalopram Hydrobromide	49	14
Famotidine	Famotidine	48	14
Metoprolol Tartrate	Metoprolol Tartrate	47	15
Alendronate Sodium	Alendronate Sodium	45	13
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	44	14
Buprenorphine Hcl	Buprenorphine Hcl	43	12
Ezetimibe	Ezetimibe	42	13
Finasteride	Finasteride	41	12
Baclofen	Baclofen	40	suppressed
Synthroid	Levothyroxine Sodium	39	11
Tramadol Hcl	Tramadol Hcl	38	suppressed
Valacyclovir	Valacyclovir Hcl	38	15
Acyclovir	Acyclovir	36	suppressed
Hydralazine Hcl	Hydralazine Hcl	36	suppressed
Clopidogrel	Clopidogrel Bisulfate	35	11
Januvia	Sitagliptin Phosphate	35	11
Olanzapine	Olanzapine	34	suppressed
Zolpidem Tartrate	Zolpidem Tartrate	32	suppressed
Meloxicam	Meloxicam	31	11
Lorazepam	Lorazepam	30	21
Venlafaxine Hcl Er	Venlafaxine Hcl	30	suppressed
Celecoxib	Celecoxib	29	14
Bupropion Xl	Bupropion Hcl	28	suppressed
Fluticasone Propionate	Fluticasone Propionate	28	15
Triamcinolone Acetonide	Triamcinolone Acetonide	28	21
Alprazolam	Alprazolam	26	12
Xarelto	Rivaroxaban	26	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	25	suppressed
Metolazone	Metolazone	25	suppressed
Duloxetine Hcl	Duloxetine Hcl	24	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	24	24
Potassium Citrate Er	Potassium Citrate	23	suppressed
Pramipexole Dihydrochloride	Pramipexole Di-Hcl	23	suppressed
Sucralfate	Sucralfate	23	suppressed
Benazepril Hcl	Benazepril Hcl	22	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	22	suppressed
Klor-Con M20	Potassium Chloride	22	suppressed
Nortriptyline Hcl	Nortriptyline Hcl	22	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	21	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	21	suppressed
Warfarin Sodium	Warfarin Sodium	21	suppressed
Clonazepam	Clonazepam	20	suppressed
Glipizide Er	Glipizide	20	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	20	suppressed
Prednisone	Prednisone	20	suppressed
Buspirone Hcl	Buspirone Hcl	19	suppressed
Glimepiride	Glimepiride	19	suppressed
Jardiance	Empagliflozin	19	suppressed
Naproxen	Naproxen	19	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	19	14
Betamethasone Dipropionate	Betamethasone Dipropionate	18	suppressed
Farxiga	Dapagliflozin Propanediol	18	suppressed
Lansoprazole	Lansoprazole	18	suppressed
Terazosin Hcl	Terazosin Hcl	18	suppressed
Eletriptan Hbr	Eletriptan Hydrobromide	17	suppressed
Estradiol	Estradiol	17	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	17	suppressed
Lantus	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Fenofibrate	Fenofibrate	15	suppressed
Levetiracetam	Levetiracetam	15	suppressed
Mupirocin	Mupirocin	15	suppressed
Doxepin Hcl	Doxepin Hcl	14	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	14	suppressed
Repatha Sureclick	Evolocumab	14	suppressed
Balsalazide Disodium	Balsalazide Disodium	13	suppressed
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	13	suppressed
Donepezil Hcl	Donepezil Hcl	13	suppressed
Mounjaro	Tirzepatide	13	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	13	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	13	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	13	suppressed
Azithromycin	Azithromycin	12	12
Lovastatin	Lovastatin	12	suppressed
Meclizine Hcl	Meclizine Hcl	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Ropinirole Hcl	Ropinirole Hcl	12	suppressed
Symbicort	Budesonide/Formoterol Fumarate	12	suppressed
Basaglar Kwikpen U-100	Insulin Glargine,hum.Rec.Anlog	11	suppressed
Cephalexin	Cephalexin	11	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	11	suppressed
Ketoconazole	Ketoconazole	11	suppressed
Testosterone	Testosterone	11	suppressed
Ventolin Hfa	Albuterol Sulfate	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