Healthcare provider profile · identity verified

Marcelle Mahan, M.D.

Family Practice · EUREKA, CA · NPI 1245292085

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	363	114
Losartan Potassium	Losartan Potassium	250	81
Levothyroxine Sodium	Levothyroxine Sodium	238	75
Lorazepam	Lorazepam	223	66
Gabapentin	Gabapentin	214	69
Amlodipine Besylate	Amlodipine Besylate	210	57
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	209	46
Omeprazole	Omeprazole	159	42
Metoprolol Succinate	Metoprolol Succinate	157	40
Lisinopril	Lisinopril	147	43
Zolpidem Tartrate	Zolpidem Tartrate	133	27
Hydrochlorothiazide	Hydrochlorothiazide	120	37
Pantoprazole Sodium	Pantoprazole Sodium	117	26
Rosuvastatin Calcium	Rosuvastatin Calcium	115	36
Metformin Hcl Er	Metformin Hcl	110	36
Pregabalin	Pregabalin	107	20
Eliquis	Apixaban	103	24
Tamsulosin Hcl	Tamsulosin Hcl	100	35
Tramadol Hcl	Tramadol Hcl	100	23
Duloxetine Hcl	Duloxetine Hcl	91	16
Albuterol Sulfate Hfa	Albuterol Sulfate	79	33
Celecoxib	Celecoxib	79	24
Montelukast Sodium	Montelukast Sodium	75	24
Alprazolam	Alprazolam	73	18
Estradiol	Estradiol	65	31
Escitalopram Oxalate	Escitalopram Oxalate	64	19
Metformin Hcl	Metformin Hcl	59	17
Ozempic	Semaglutide	59	15
Famotidine	Famotidine	51	19
Carvedilol	Carvedilol	50	13
Simvastatin	Simvastatin	50	15
Fluoxetine Hcl	Fluoxetine Hcl	49	suppressed
Furosemide	Furosemide	49	19
Sertraline Hcl	Sertraline Hcl	49	12
Trazodone Hcl	Trazodone Hcl	49	19
Azithromycin	Azithromycin	46	22
Oxycodone Hcl	Oxycodone Hcl	46	11
Alendronate Sodium	Alendronate Sodium	45	13
Atenolol	Atenolol	45	11
Breo Ellipta	Fluticasone/Vilanterol	45	16
Prednisone	Prednisone	45	17
Benazepril Hcl	Benazepril Hcl	42	12
Metoprolol Tartrate	Metoprolol Tartrate	42	17
Meloxicam	Meloxicam	40	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	39	16
Naproxen	Naproxen	39	suppressed
Clonazepam	Clonazepam	37	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	37	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	37	11
Trulicity	Dulaglutide	37	suppressed
Potassium Chloride	Potassium Chloride	34	11
Spironolactone	Spironolactone	34	13
Allopurinol	Allopurinol	33	11
Jardiance	Empagliflozin	33	13
Mirtazapine	Mirtazapine	33	suppressed
Xarelto	Rivaroxaban	33	suppressed
Diazepam	Diazepam	32	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	32	11
Ondansetron Hcl	Ondansetron Hcl	32	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	32	suppressed
Valacyclovir	Valacyclovir Hcl	32	16
Tizanidine Hcl	Tizanidine Hcl	31	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	29	suppressed
Memantine Hcl	Memantine Hcl	29	suppressed
Mounjaro	Tirzepatide	29	suppressed
Paxlovid	Nirmatrelvir/Ritonavir	29	27
Quetiapine Fumarate	Quetiapine Fumarate	29	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	28	suppressed
Chlorthalidone	Chlorthalidone	27	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	27	suppressed
Quetiapine Fumarate Er	Quetiapine Fumarate	27	suppressed
Methadone Hcl	Methadone Hcl	26	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	26	suppressed
Bupropion Xl	Bupropion Hcl	24	suppressed
Finasteride	Finasteride	24	suppressed
Ondansetron Odt	Ondansetron	24	suppressed
Acyclovir	Acyclovir	22	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	22	16
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	22	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	21	16
Fluticasone Propionate	Fluticasone Propionate	21	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	21	suppressed
Citalopram Hbr	Citalopram Hydrobromide	20	suppressed
Eszopiclone	Eszopiclone	20	suppressed
Glipizide Er	Glipizide	20	suppressed
Hydromorphone Hcl	Hydromorphone Hcl	20	suppressed
Warfarin Sodium	Warfarin Sodium	20	suppressed
Buspirone Hcl	Buspirone Hcl	19	suppressed
Cephalexin	Cephalexin	19	suppressed
Ezetimibe	Ezetimibe	19	suppressed
Synthroid	Levothyroxine Sodium	19	suppressed
Ibuprofen	Ibuprofen	18	suppressed
Ramipril	Ramipril	18	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	17	12
Ipratropium Bromide	Ipratropium Bromide	17	suppressed
Methenamine Hippurate	Methenamine Hippurate	17	suppressed
Sucralfate	Sucralfate	17	suppressed
Donepezil Hcl	Donepezil Hcl	16	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	16	suppressed
Terbinafine Hcl	Terbinafine Hcl	16	suppressed
Ventolin Hfa	Albuterol Sulfate	16	suppressed
Clopidogrel	Clopidogrel Bisulfate	15	suppressed
Divalproex Sodium Er	Divalproex Sodium	15	suppressed
Lidocaine	Lidocaine	15	suppressed
Liothyronine Sodium	Liothyronine Sodium	15	suppressed
Propranolol Hcl	Propranolol Hcl	15	suppressed
Baclofen	Baclofen	14	suppressed
Pioglitazone Hcl	Pioglitazone Hcl	14	suppressed
Pravastatin Sodium	Pravastatin Sodium	14	suppressed
Zolpidem Tartrate Er	Zolpidem Tartrate	14	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	13	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	13	suppressed
Fluconazole	Fluconazole	13	11
Methocarbamol	Methocarbamol	13	suppressed
Armour Thyroid	Thyroid,pork	12	suppressed
Carisoprodol	Carisoprodol	12	suppressed
Gemfibrozil	Gemfibrozil	12	suppressed
Morphine Sulfate	Morphine Sulfate	12	suppressed
Myrbetriq	Mirabegron	12	suppressed
Nifedipine Er	Nifedipine	12	suppressed
Nystatin	Nystatin	12	suppressed
Ropinirole Hcl	Ropinirole Hcl	12	suppressed
Spironolactone-Hctz	Spironolact/Hydrochlorothiazid	12	suppressed
Temazepam	Temazepam	12	suppressed
Verapamil Er	Verapamil Hcl	12	suppressed
Nano 2nd Gen Pen Needle	Pen Needle, Diabetic	11	suppressed
Pirfenidone	Pirfenidone	11	suppressed
Premarin	Estrogens, Conjugated	11	suppressed
Rybelsus	Semaglutide	11	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	11	suppressed
Sulfasalazine	Sulfasalazine	11	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	11	11

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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