Healthcare provider profile · identity verified

Mark Ferlan, DO

Internal Medicine · MANCHESTER, NH · NPI 1124230370

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	405	124
Amlodipine Besylate	Amlodipine Besylate	326	91
Levothyroxine Sodium	Levothyroxine Sodium	324	83
Lisinopril	Lisinopril	260	80
Pantoprazole Sodium	Pantoprazole Sodium	238	70
Metoprolol Succinate	Metoprolol Succinate	200	63
Omeprazole	Omeprazole	185	56
Rosuvastatin Calcium	Rosuvastatin Calcium	185	58
Losartan Potassium	Losartan Potassium	173	51
Metformin Hcl	Metformin Hcl	169	52
Escitalopram Oxalate	Escitalopram Oxalate	123	35
Tamsulosin Hcl	Tamsulosin Hcl	123	29
Lorazepam	Lorazepam	120	31
Sertraline Hcl	Sertraline Hcl	113	31
Simvastatin	Simvastatin	112	33
Alprazolam	Alprazolam	110	20
Albuterol Sulfate Hfa	Albuterol Sulfate	109	34
Gabapentin	Gabapentin	105	30
Furosemide	Furosemide	102	33
Hydrochlorothiazide	Hydrochlorothiazide	102	33
Eliquis	Apixaban	89	24
Metoprolol Tartrate	Metoprolol Tartrate	87	28
Pravastatin Sodium	Pravastatin Sodium	75	22
Allopurinol	Allopurinol	74	21
Zolpidem Tartrate	Zolpidem Tartrate	69	13
Tramadol Hcl	Tramadol Hcl	67	15
Atenolol	Atenolol	63	21
Trazodone Hcl	Trazodone Hcl	60	19
Clonazepam	Clonazepam	59	suppressed
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	59	18
Synthroid	Levothyroxine Sodium	58	14
Potassium Chloride	Potassium Chloride	56	17
Diazepam	Diazepam	53	13
Prednisone	Prednisone	50	28
Diclofenac Sodium	Diclofenac Sodium	49	19
Glipizide Er	Glipizide	49	14
Clopidogrel	Clopidogrel Bisulfate	48	17
Montelukast Sodium	Montelukast Sodium	48	14
Duloxetine Hcl	Duloxetine Hcl	46	12
Lovastatin	Lovastatin	44	13
Metformin Hcl Er	Metformin Hcl	44	14
Trulicity	Dulaglutide	43	suppressed
Famotidine	Famotidine	42	14
Meloxicam	Meloxicam	40	13
Benazepril Hcl	Benazepril Hcl	38	11
Jardiance	Empagliflozin	33	12
Mirtazapine	Mirtazapine	33	suppressed
Paroxetine Hcl	Paroxetine Hcl	32	suppressed
Propranolol Hcl	Propranolol Hcl	32	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	31	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	31	suppressed
Breo Ellipta	Fluticasone/Vilanterol	29	suppressed
Chlorthalidone	Chlorthalidone	29	suppressed
Ezetimibe	Ezetimibe	29	12
Symbicort	Budesonide/Formoterol Fumarate	29	suppressed
Bupropion Xl	Bupropion Hcl	28	suppressed
Finasteride	Finasteride	28	suppressed
Rybelsus	Semaglutide	28	suppressed
Tizanidine Hcl	Tizanidine Hcl	28	suppressed
Fenofibrate	Fenofibrate Nanocrystallized	27	suppressed
Klor-Con M20	Potassium Chloride	27	suppressed
Citalopram Hbr	Citalopram Hydrobromide	26	suppressed
Fluticasone-Salmeterol	Fluticasone Propion/Salmeterol	26	suppressed
Valsartan	Valsartan	26	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	25	suppressed
Lisinopril-Hydrochlorothiazide	Lisinopril/Hydrochlorothiazide	25	suppressed
Terazosin Hcl	Terazosin Hcl	25	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	25	19
Doxycycline Hyclate	Doxycycline Hyclate	24	22
Januvia	Sitagliptin Phosphate	24	suppressed
Meclizine Hcl	Meclizine Hcl	24	suppressed
Torsemide	Torsemide	24	suppressed
Levetiracetam	Levetiracetam	23	suppressed
Myrbetriq	Mirabegron	23	suppressed
Nitrofurantoin Mono-Macro	Nitrofurantoin Monohyd/M-Cryst	23	15
Donepezil Hcl	Donepezil Hcl	22	suppressed
Warfarin Sodium	Warfarin Sodium	22	suppressed
Fenofibrate	Fenofibrate	21	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	21	suppressed
Methylprednisolone	Methylprednisolone	21	19
Pioglitazone Hcl	Pioglitazone Hcl	21	suppressed
Venlafaxine Hcl Er	Venlafaxine Hcl	21	suppressed
Alendronate Sodium	Alendronate Sodium	20	suppressed
Bupropion Hcl Sr	Bupropion Hcl	20	suppressed
Carvedilol	Carvedilol	20	suppressed
Glipizide	Glipizide	20	suppressed
Acyclovir	Acyclovir	19	suppressed
Budesonide-Formoterol Fumarate	Budesonide/Formoterol Fumarate	19	suppressed
Enalapril Maleate	Enalapril Maleate	19	suppressed
Lansoprazole	Lansoprazole	19	suppressed
Fluticasone Propionate	Fluticasone Propionate	18	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	18	suppressed
Levemir Flexpen	Insulin Detemir	18	suppressed
Oxycodone Hcl	Oxycodone Hcl	18	suppressed
Celecoxib	Celecoxib	17	suppressed
Esomeprazole Magnesium	Esomeprazole Magnesium	17	suppressed
Hydroxyzine Hcl	Hydroxyzine Hcl	17	suppressed
Toujeo Solostar	Insulin Glargine,hum.Rec.Anlog	17	suppressed
Tradjenta	Linagliptin	17	suppressed
Wixela Inhub	Fluticasone Propion/Salmeterol	17	suppressed
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	16	14
Colchicine	Colchicine	16	suppressed
Glimepiride	Glimepiride	15	suppressed
Ibuprofen	Ibuprofen	15	suppressed
Labetalol Hcl	Labetalol Hcl	15	suppressed
Ozempic	Semaglutide	15	suppressed
Spironolactone	Spironolactone	15	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	14	suppressed
Levofloxacin	Levofloxacin	14	suppressed
Oxybutynin Chloride	Oxybutynin Chloride	14	suppressed
Spiriva Respimat	Tiotropium Bromide	14	suppressed
Amlodipine Besylate-Benazepril	Amlodipine Besylate/Benazepril	13	suppressed
Losartan-Hydrochlorothiazide	Losartan/Hydrochlorothiazide	13	suppressed
Ondansetron Odt	Ondansetron	13	suppressed
Pregabalin	Pregabalin	13	suppressed
Quetiapine Fumarate	Quetiapine Fumarate	13	suppressed
Ramipril	Ramipril	13	suppressed
Testosterone Cypionate	Testosterone Cypionate	13	suppressed
Xarelto	Rivaroxaban	13	suppressed
Bisoprolol Fumarate	Bisoprolol Fumarate	12	suppressed
Dutasteride	Dutasteride	12	suppressed
Fluvastatin Er	Fluvastatin Sodium	12	suppressed
Irbesartan	Irbesartan	12	suppressed
Oxybutynin Chloride Er	Oxybutynin Chloride	12	suppressed
Oxycodone-Acetaminophen	Oxycodone Hcl/Acetaminophen	12	suppressed
Diflunisal	Diflunisal	11	suppressed
Nitroglycerin	Nitroglycerin	11	suppressed
Testosterone	Testosterone	11	suppressed
Valacyclovir	Valacyclovir Hcl	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