Medicare Enrolled
Dr. Kenneth Guarnieri, M.D.
Internal Medicine · Webster, MA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Low-engagement
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Guarnieri from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Guarnieri
Dr. Kenneth Guarnieri is an internal medicine specialist in Webster, MA, with 20 years of NPI registration. Based on federal Medicare data, Dr. Guarnieri performed 1,956 Medicare services across 1,193 unique beneficiaries.
Between the years covered by Open Payments, Dr. Guarnieri received a total of $25,872 from 59 pharmaceutical and/or device companies across 1431 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in internal medicine. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Guarnieri is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
✓ 20 years in practice
▲ Top 11% volume in MA
$25,872 industry payments
Medicare Practice Summary
Medicare Utilization ↗1,956
Medicare services
Top 11% in MA for internal medicine
1,193
Unique beneficiaries
$57
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~98 Medicare services per year of practice
Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
489 | $65 | $325 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
452 | $90 | $375 |
| Annual wellness visit, follow-up A follow-up annual wellness visit that includes a personalized prevention plan of service. |
153 | $135 | $270 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
146 | $11 | $65 |
| Annual depression screening | 140 | $20 | $50 |
| Health risk assessment administration and interpretation This procedure involves administering a health risk assessment to a patient and interpreting the results. |
130 | $2 | $60 |
| Office visit for established patient An office visit for an existing patient that may not require the healthcare professional to be present. |
123 | $18 | $75 |
| Prothrombin time test (blood clotting) A laboratory test that measures how long it takes for blood to clot. This procedure evaluates the body's coagulation process. |
122 | $4 | $18 |
| Advance care planning consultation, first 30 min A session focused on discussing and documenting future healthcare preferences and goals. This service covers the initial 30 minutes of the planning discussion. |
110 | $74 | $200 |
| Stool test for blood to screen for colon tumors A test that analyzes a stool sample to detect hidden blood, which is used to screen for colon tumors. |
51 | $4 | $18 |
| Smoking cessation counseling, 4-10 minutes A brief counseling session focused on helping patients quit smoking and tobacco use. The provider spends 4 to 10 minutes discussing strategies and support for cessation. |
23 | $15 | $50 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
17 | $100 | $275 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
Industry Payment Transparency
Open Payments through 2024 ↗$25,872
Total received (2018-2024)
Avg $3,696/year across 7 years
Top 7% in MA for internal medicine
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
59
Companies
1,431
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$25,872 (100.0%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$3,910
2023
$4,935
2022
$4,690
2021
$4,341
2020
$3,043
2019
$2,645
2018
$2,309
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AstraZeneca Pharmaceuticals LP
$631
Lilly USA, LLC
$398
PFIZER INC.
$391
ABBVIE INC.
$318
Amgen Inc.
$288
Novo Nordisk Inc
$245
Novartis Pharmaceuticals Corporation
$229
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$184
Exact Sciences Corporation
$142
Alnylam Pharmaceuticals Inc.
$141
Bayer Healthcare Pharmaceuticals Inc.
$133
Phathom Pharmaceuticals, Inc.
$132
Sumitomo Pharma America, Inc.
$131
Boehringer Ingelheim Pharmaceuticals, Inc.
$116
Inspire Medical Systems, Inc.
$86
Abbott Laboratories
$76
E.R. Squibb & Sons, L.L.C.
$40
Esperion Therapeutics, Inc.
$39
Janssen Pharmaceuticals, Inc
$38
Paratek Pharmaceuticals, Inc.
$37
Boston Scientific Corporation
$36
Astellas Pharma US Inc
$22
Ardelyx, Inc.
$20
GlaxoSmithKline, LLC.
$20
Kowa Pharmaceuticals America, Inc.
$16
Top 3 companies account for 36.3% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$4,301
Lilly USA, LLC
$1,907
PFIZER INC.
$1,881
Amgen Inc.
$1,856
ABBVIE INC.
$1,586
Novo Nordisk Inc
$1,404
Boehringer Ingelheim Pharmaceuticals, Inc.
$1,377
Novartis Pharmaceuticals Corporation
$1,113
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$881
Janssen Pharmaceuticals, Inc
$793
Amarin Pharma Inc.
$672
GlaxoSmithKline, LLC.
$618
E.R. Squibb & Sons, L.L.C.
$610
AbbVie Inc.
$588
Astellas Pharma US Inc
$549
Bayer Healthcare Pharmaceuticals Inc.
$402
SANOFI-AVENTIS U.S. LLC
$393
Merck Sharp & Dohme Corporation
$374
Sumitomo Pharma America, Inc.
$363
Teva Pharmaceuticals USA, Inc.
$346
Abbott Laboratories
$341
Exact Sciences Corporation
$317
Allergan, Inc.
$235
Esperion Therapeutics, Inc.
$200
Biohaven Pharmaceutical Holding Company Ltd.
$199
Bayer HealthCare Pharmaceuticals Inc.
$188
Takeda Pharmaceuticals U.S.A., Inc.
$187
Alnylam Pharmaceuticals Inc.
$184
Allergan Inc.
$166
Kowa Pharmaceuticals America, Inc.
$151
Sunovion Pharmaceuticals Inc.
$137
Antares Pharma, Inc.
$132
Phathom Pharmaceuticals, Inc.
$132
Mylan Specialty L.P.
$127
NESTLE HEALTHCARE NUTRITION INC.
$115
IDORSIA PHARMACEUTICALS US INC
$95
Inspire Medical Systems, Inc.
$86
Dexcom, Inc.
$86
Nestle HealthCare Nutrition Inc.
$81
Merck Sharp & Dohme LLC
$62
RedHill Biopharma Inc.
$61
SANOFI PASTEUR INC.
$55
Scilex Pharmaceuticals Inc.
$50
Shire North American Group Inc
$48
Lexicon Pharmaceuticals, Inc.
$43
Regeneron Healthcare Solutions, Inc.
$43
Bardy Diagnostics, Inc.
$40
Paratek Pharmaceuticals, Inc.
$37
Boston Scientific Corporation
$36
Genentech USA, Inc.
$31
Almatica Pharma LLC
$28
Otsuka America Pharmaceutical, Inc.
$25
Medtronic, Inc.
$25
Kiniksa Pharmaceuticals, Ltd.
$23
Eisai Inc.
$23
Ardelyx, Inc.
$20
UROVANT SCIENCES INC
$19
Ironwood Pharmaceuticals, Inc
$17
Purdue Pharma L.P.
$12
Top 3 companies account for 31.3% of all-time payments
Associated products mentioned in payments ›
ADVAIR · AIRSUPRA · AJOVY · AMITIZA · ANORO ELLIPTA · Aimovig · Amitiza · BASAGLAR · BELSOMRA · BREO · BREZTRI · BREZTRI AEROSPHERE · BRILINTA · CAMZYOS · CHANTIX · COLOGUARD · COLOGUARD DNA CAPTURE REAGENTS · COMIRNATY · CREON · Carnation Ambulatory Monitor · Cologuard Collection Kit · Corlanor · DUZALLO · Dayvigo · Dexcom G6 Transmitter · ELIQUIS · EMGALITY · ENTRESTO · EUCRISA · EVENITY · FARXIGA · FASENRA · FLUZONE HIGH-DOSE · FLUZONE QUADRIVALENT · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · FreeStyle Libre 2 · GARDASIL 9 · GEMTESA · GRALISE · IBSRELA · INSPIRE · INVOKANA · Inpefa · JANUVIA · JARDIANCE · Kerendia · LEQVIO · LINZESS · LOKELMA · LYRICA · Livalo · MOTEGRITY · MOUNJARO · MYDAYIS · MYFEMBREE · MYRBETRIQ · Movantik · Myrbetriq · NEXLETOL · NOCDURNA · NURTEC ODT · NUZYRA · ONPATTRO · Otezla · Ozempic · PAXLOVID · PNEUMOVAX 23 · PRADAXA · PRALUENT · PRALUENT ALIROCUMAB INJECTION · PREMARIN · PREVNAR - 13 · PREVNAR 20 · Prolia · QULIPTA · QUVIVIQ · QVAR · REXULTI · RYBELSUS · Repatha · Rybelsus · SHINGRIX · SOLIQUA · SOLIQUA 100/33 · SOMAVERT · SPIRIVA · SPIRIVA RESPIMAT · SPRAVATO · STIOLTO · STIOLTO RESPIMAT · SYMBICORT · SYMPROIC · Saxenda · TAGRISSO · TOUJEO · TOVIAZ · TRADJENTA · TRELEGY ELLIPTA · TRULICITY · Tresiba · Trintellix · UBRELVY · Uloric · Utibron · VENASEAL · VERQUVO · VIBERZI · VIIBRYD · VOQUEZNA · VRAYLAR · VYNDAQEL · VYVANSE · Vascepa · Veozah · Victoza · WATCHMAN Access System · WATCHMAN FLX · Wegovy · XARELTO · XIFAXAN · Xofluza · YUPELRI · Yupelri · ZENPEP · ZORYVE · ZTLido 30 POUCH in 1 CARTON 1 PATCH in 1 POUCH
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
Most payments (100%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians. Total industry engagement is in the top 7% for internal medicine in MA.
Geographic Context
Internal medicine physicians within 10 mi
800
Per 100K population
92.8
County median income
$93,561
Nearest hospital
UMASS MEMORIAL HEALTH - HARRINGTON HOSPITAL
9.7 mi
9.7 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Guarnieri is a clinical cardiology specialist, with above-average Medicare volume (top 11% in MA), with low-engagement industry engagement in the top 7% of MA peers, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Guarnieri experienced with office visit, established patient (20-29 min)?
Based on Medicare claims data, Dr. Guarnieri performed 489 office visit, established patient (20-29 min) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Guarnieri receive payments from pharmaceutical companies?
Yes. Dr. Guarnieri received a total of $25,872 from 59 companies across 1,431 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Guarnieri's costs compare to other internal medicine physicians in Webster?
Dr. Guarnieri's average Medicare payment per service is $57. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Guarnieri) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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