Medicare Enrolled
Dr. Kenneth Guarnieri, M.D.
Internal Medicine · Webster, MA
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
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 in 2023. These records do not provide a deduplicated patient total.
Between the years covered by Open Payments, Dr. Guarnieri received a total of $25,872 from 59 pharmaceutical and/or device companies across 1431 payment records. A record can group multiple payments. These transfers are publicly reported through CMS Open Payments. Disclosure alone does not establish their effect on care. A reliable breakdown by payment category is not available in this snapshot. 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 of NPI registration
▲ Top 12% volume in MA
$25,872 industry payments
Medicare Practice Summary — 2023
Medicare Utilization ↗1,956
Medicare services
Top 12% in MA for internal medicine
Not available
Unique patients (not deduplicated)
$57
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
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. These counts do not measure clinical quality or years of experience.
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
Payment records
Payments are publicly reported; disclosure does not establish legality · Not evidence of wrongdoing · How to interpret →
Payment categories are unavailable while the source breakdown is being rebuilt. Company and year totals do not identify how much belongs to each category.
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)
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 ›
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Should you be concerned? Industry payments are disclosed through CMS Open Payments. Disclosure alone does not establish their purpose, legality, or effect on care. 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 →
Geographic Context
Internal medicine physicians in nearby ZIP areas
800
County median income
$93,561
Nearest hospital to ZIP centroid (approximate)
UMASS MEMORIAL HEALTH - HARRINGTON HOSPITAL
9.7 mi
9.7 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not included | 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 12% in MA), 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. These records cover Medicare fee-for-service activity, including eligible younger beneficiaries; they do not measure total practice volume or clinical quality.
Does Dr. Guarnieri receive payments from pharmaceutical companies?
Yes. Dr. Guarnieri received a total of $25,872 from 59 companies across 1,431 payment records. A record can group multiple payments. These transfers are publicly disclosed through CMS Open Payments. Disclosure alone does not establish their legality or effect on care. 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 the presence of registry, enrollment, activity or payment records, not verified experience or clinical quality. 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?
Source publication dates and the snapshots loaded on this site can differ. Rebuilding a page does not refresh its source records. Check the Medicare reporting year and the payment interval shown above; consult the linked official sources for newer releases and current registry details. See our data freshness policy →
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About this page
This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: 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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