Healthcare provider profile · identity verified

William James Mugg, MD

Internal Medicine · SO HADLEY, MA · NPI 1689761959

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	387	92
Losartan Potassium	Losartan Potassium	269	67
Metoprolol Succinate	Metoprolol Succinate	235	52
Omeprazole	Omeprazole	226	55
Simvastatin	Simvastatin	222	53
Levothyroxine Sodium	Levothyroxine Sodium	210	43
Gabapentin	Gabapentin	194	28
Oxycodone Hcl	Oxycodone Hcl	174	20
Eliquis	Apixaban	168	19
Amlodipine Besylate	Amlodipine Besylate	165	41
Lorazepam	Lorazepam	161	34
Lisinopril	Lisinopril	159	37
Butalbital-Acetaminophen-Caffe	Butalb/Acetaminophen/Caffeine	153	suppressed
Furosemide	Furosemide	147	34
Naproxen	Naproxen	127	36
Metoprolol Tartrate	Metoprolol Tartrate	120	36
Rosuvastatin Calcium	Rosuvastatin Calcium	100	27
Metformin Hcl	Metformin Hcl	98	23
Warfarin Sodium	Warfarin Sodium	97	suppressed
Hydrocodone-Acetaminophen	Hydrocodone/Acetaminophen	95	21
Clonazepam	Clonazepam	90	16
Tamsulosin Hcl	Tamsulosin Hcl	86	19
Amoxicillin-Clavulanate Potass	Amoxicillin/Potassium Clav	76	54
Zolpidem Tartrate	Zolpidem Tartrate	75	19
Alprazolam	Alprazolam	71	suppressed
Prednisone	Prednisone	67	27
Albuterol Sulfate Hfa	Albuterol Sulfate	65	23
Lactulose	Lactulose	65	12
Carvedilol	Carvedilol	64	11
Baclofen	Baclofen	62	12
Cyclobenzaprine Hcl	Cyclobenzaprine Hcl	62	17
Jardiance	Empagliflozin	62	suppressed
Sertraline Hcl	Sertraline Hcl	62	14
Allopurinol	Allopurinol	61	14
Atenolol	Atenolol	59	16
Meclizine Hcl	Meclizine Hcl	59	16
Diazepam	Diazepam	57	suppressed
Pantoprazole Sodium	Pantoprazole Sodium	57	16
Paroxetine Hcl	Paroxetine Hcl	57	suppressed
Finasteride	Finasteride	56	11
Tramadol Hcl	Tramadol Hcl	56	suppressed
Citalopram Hbr	Citalopram Hydrobromide	55	16
Potassium Chloride	Potassium Chloride	55	suppressed
Trazodone Hcl	Trazodone Hcl	53	suppressed
Clopidogrel	Clopidogrel Bisulfate	48	suppressed
Glipizide	Glipizide	48	11
Nifedipine Er	Nifedipine	48	14
Oxybutynin Chloride Er	Oxybutynin Chloride	46	18
Clotrimazole-Betamethasone	Clotrimazole/Betamethasone Dip	45	19
Cephalexin	Cephalexin	44	21
Fluticasone Propionate	Fluticasone Propionate	43	14
Alendronate Sodium	Alendronate Sodium	42	15
Tresiba Flextouch U-100	Insulin Degludec	42	suppressed
Ibuprofen	Ibuprofen	40	suppressed
Triamcinolone Acetonide	Triamcinolone Acetonide	38	12
Pioglitazone Hcl	Pioglitazone Hcl	37	suppressed
Pravastatin Sodium	Pravastatin Sodium	37	suppressed
Valsartan	Valsartan	37	suppressed
Hydralazine Hcl	Hydralazine Hcl	36	suppressed
Fentanyl	Fentanyl	35	suppressed
Digoxin	Digoxin	34	suppressed
Hydrochlorothiazide	Hydrochlorothiazide	34	suppressed
Ondansetron Odt	Ondansetron	34	12
Pregabalin	Pregabalin	33	suppressed
Spironolactone	Spironolactone	31	suppressed
Celecoxib	Celecoxib	29	suppressed
Amoxicillin	Amoxicillin	27	15
Mirtazapine	Mirtazapine	27	suppressed
Ciprofloxacin Hcl	Ciprofloxacin Hcl	26	23
Nystatin	Nystatin	26	suppressed
Ezetimibe	Ezetimibe	25	suppressed
Methadone Hcl	Methadone Hcl	25	suppressed
Bupropion Hcl Sr	Bupropion Hcl	24	suppressed
Ozempic	Semaglutide	24	suppressed
Diltiazem 24hr Er (Cd)	Diltiazem Hcl	23	suppressed
Doxycycline Hyclate	Doxycycline Hyclate	23	18
Midodrine Hcl	Midodrine Hcl	23	suppressed
Olanzapine	Olanzapine	23	suppressed
Propranolol Hcl Er	Propranolol Hcl	23	suppressed
Trelegy Ellipta	Fluticasone/Umeclidin/Vilanter	23	suppressed
Gemfibrozil	Gemfibrozil	21	suppressed
Amitriptyline Hcl	Amitriptyline Hcl	20	suppressed
Methylphenidate Hcl	Methylphenidate Hcl	20	suppressed
Diphenoxylate-Atropine	Diphenoxylate Hcl/Atropine	19	suppressed
Escitalopram Oxalate	Escitalopram Oxalate	19	suppressed
Temazepam	Temazepam	19	suppressed
Acetaminophen-Codeine	Acetaminophen With Codeine	17	suppressed
Montelukast Sodium	Montelukast Sodium	17	suppressed
Entresto	Sacubitril/Valsartan	16	suppressed
Labetalol Hcl	Labetalol Hcl	16	suppressed
Lantus Solostar	Insulin Glargine,hum.Rec.Anlog	16	suppressed
Sulindac	Sulindac	16	suppressed
Azithromycin	Azithromycin	15	suppressed
Bumetanide	Bumetanide	15	suppressed
Doxazosin Mesylate	Doxazosin Mesylate	15	suppressed
Famotidine	Famotidine	15	suppressed
Ondansetron Hcl	Ondansetron Hcl	15	suppressed
Oxycontin	Oxycodone Hcl	15	suppressed
Terazosin Hcl	Terazosin Hcl	15	suppressed
Trulicity	Dulaglutide	15	suppressed
Fluoxetine Hcl	Fluoxetine Hcl	14	suppressed
Sulfamethoxazole-Trimethoprim	Sulfamethoxazole/Trimethoprim	14	11
Levofloxacin	Levofloxacin	13	suppressed
Novolog Flexpen	Insulin Aspart	13	suppressed
Ventolin Hfa	Albuterol Sulfate	13	suppressed
Advair Diskus	Fluticasone Propion/Salmeterol	12	suppressed
Glipizide Er	Glipizide	12	suppressed
Ibandronate Sodium	Ibandronate Sodium	12	suppressed
Metformin Hcl Er	Metformin Hcl	12	suppressed
Morphine Sulfate Er	Morphine Sulfate	12	suppressed
Naltrexone Hcl	Naltrexone Hcl	12	suppressed
Nitrofurantoin	Nitrofurantoin Macrocrystal	12	suppressed
Otezla	Apremilast	12	suppressed
Tolterodine Tartrate Er	Tolterodine Tartrate	12	suppressed
Triamterene-Hydrochlorothiazid	Triamterene/Hydrochlorothiazid	12	suppressed
Fiasp	Insulin Aspart (Niacinamide)	11	suppressed
Fluconazole	Fluconazole	11	suppressed
Lyrica	Pregabalin	11	suppressed
Xarelto	Rivaroxaban	11	suppressed
Xtampza Er	Oxycodone Myristate	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