Medicare Enrolled
Dr. Amer Kassar, MD
Endocrinology · Dekalb, IL
Practice pattern: Clinical Cardiology
— Primarily office-based clinical cardiology
Speaking/Promotional
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. Kassar 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. Kassar
Dr. Amer Kassar is an endocrinology specialist in Dekalb, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Kassar performed 4,494 Medicare services across 2,791 unique beneficiaries.
Between the years covered by Open Payments, Dr. Kassar received a total of $213,109 from 79 pharmaceutical and/or device companies across 2158 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in endocrinology. The majority of payments are for speaking programs and promotional activities, reflecting participation in industry-sponsored events. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Kassar 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.
✓ 19 years in practice
▲ Top 12% volume in IL
$213,109 industry payments
Medicare Practice Summary
Medicare Utilization ↗4,494
Medicare services
Top 12% in IL for endocrinology
2,791
Unique beneficiaries
$72
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~237 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 (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. |
1,131 | $86 | $310 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
639 | $125 | $420 |
| 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. |
555 | $61 | $210 |
| Ultrasound of head and neck soft tissue This procedure uses sound waves to create images of the soft tissues in the head and neck area. It allows for the visualization of structures beneath the skin without using radiation. |
498 | $78 | $330 |
| Continuous glucose monitoring with interpretation This procedure involves monitoring blood sugar levels in tissue fluid using a sensor placed under the skin, along with the interpretation and reporting of the results. |
294 | $24 | $125 |
| Hemoglobin A1c test (diabetes monitoring) A blood test that measures your average blood sugar levels over the past two to three months. |
258 | $9 | $70 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
188 | $10 | $72 |
| Blood glucose test using hand-held instrument A test that measures the level of sugar in the blood using a portable device. The result helps monitor blood glucose levels. |
184 | $3 | $25 |
| New patient office visit (30-44 min) An initial office visit for a new patient lasting between 30 and 44 minutes. This code is used when the total time spent on the date of the encounter falls within this range. |
74 | $71 | $225 |
| New patient office visit (45-59 min) An initial office visit for a new patient lasting between 45 and 59 minutes. This code covers the total time spent by the physician or qualified healthcare professional on the date of the encounter. |
67 | $109 | $475 |
| Ultrasound of head and neck blood flow, bilateral An ultrasound exam that uses sound waves to visualize and assess blood flow in the vessels of both the head and the neck. |
64 | $133 | $600 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
60 | $1 | $15 |
| Ultrasound of arm and leg arteries A non-invasive imaging test that uses sound waves to examine the blood vessels in the arms and legs. It evaluates blood flow and checks for blockages or other vascular issues. |
59 | $86 | $325 |
| Hospital follow-up visit, moderate complexity Follow-up hospital visit for an existing patient involving moderate medical decision making. The visit requires at least 35 minutes of time spent on the date of service. |
55 | $60 | $215 |
| Ultrasound of leg arteries or grafts An imaging test that uses sound waves to create pictures of the blood vessels in the legs or any surgical grafts present. |
50 | $161 | $700 |
| Ultrasound of arm or leg veins An ultrasound exam of the veins in the arm or leg. The test uses sound waves to check blood flow and may include compression and other maneuvers. |
45 | $116 | $560 |
| Initial hospital admission, moderate complexity Initial hospital inpatient or observation care for a new patient involving moderate-level medical decision making, with at least 55 minutes total time on the date of the encounter. |
41 | $99 | $400 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
41 | $65 | $178 |
| Complete ultrasound of retroperitoneum An ultrasound examination of the structures located behind the abdominal cavity. |
30 | $78 | $290 |
| Continuous glucose monitoring, tissue fluid This procedure involves continuous monitoring of blood sugar levels in tissue fluid using a sensor placed under the skin. |
29 | $45 | $130 |
| New patient office visit, complex (60-74 min) | 27 | $151 | $500 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
23 | $132 | $590 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
21 | $8 | $28 |
| Ultrasound of arm and leg arteries This procedure uses sound waves to create images of the blood vessels in the arms and legs. It allows healthcare providers to examine the structure and blood flow within these arteries. |
19 | $53 | $210 |
| Telephone medical discussion, 5-10 minutes A phone conversation with a physician lasting between 5 and 10 minutes to discuss medical matters. |
17 | $40 | $107 |
| Thyroid stimulating hormone (TSH) test A blood test that measures the level of thyroid stimulating hormone to evaluate thyroid function. |
14 | $13 | $120 |
| Basic metabolic blood panel A blood test that measures a group of basic chemicals, including total calcium levels. |
11 | $8 | $95 |
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 ↗$213,109
Total received (2018-2024)
Avg $30,444/year across 7 years
Top 3% in IL for endocrinology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
79
Companies
2,158
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.
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$173,269 (81.3%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$28,464 (13.4%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$11,376 (5.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$13,358
2023
$22,323
2022
$14,264
2021
$13,346
2020
$18,447
2019
$55,879
2018
$75,492
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Xeris Pharmaceuticals, Inc.
$4,177
CeQur Corporation
$3,511
Lilly USA, LLC
$798
Ascensia Diabetes Care Us Inc.
$788
Abbott Laboratories
$583
Mannkind Corporation
$507
Novo Nordisk Inc
$474
RECORDATI_RARE_DISEASES_INC.
$405
Corcept Therapeutics
$400
ABBVIE INC.
$333
Medtronic, Inc.
$284
Madrigal Pharmaceuticals
$159
Amgen Inc.
$131
BETA BIONICS, INC.
$98
Dexcom, Inc.
$87
Embecta Corp.
$82
Novartis Pharmaceuticals Corporation
$65
Esperion Therapeutics, Inc.
$59
SANOFI-AVENTIS U.S. LLC
$53
Antares Pharma, Inc.
$52
Boehringer Ingelheim Pharmaceuticals, Inc.
$46
Merz Pharmaceuticals, LLC
$43
Astellas Pharma US Inc
$30
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$28
Avvisto Therapeutics, LLC
$28
Radius Health, Inc.
$23
Neurocrine Biosciences, Inc.
$23
Amneal Pharmaceuticals LLC
$20
Chiesi USA, Inc.
$20
IBSA Pharma Inc.
$17
Acella Pharmaceuticals, LLC
$15
Currax Pharmaceuticals LLC
$14
TheracosBio, LLC
$6
Top 3 companies account for 63.5% of 2024 payments
All-time payments by company (2018-2024) ›
SANOFI-AVENTIS U.S. LLC
$39,882
Lilly USA, LLC
$23,270
Janssen Pharmaceuticals, Inc
$21,013
Merck Sharp & Dohme Corporation
$18,064
AstraZeneca Pharmaceuticals LP
$17,795
Novo Nordisk Inc
$15,852
Boehringer Ingelheim Pharmaceuticals, Inc.
$14,838
Dexcom, Inc.
$13,027
Xeris Pharmaceuticals, Inc.
$9,025
CeQur Corporation
$5,944
Bayer HealthCare Pharmaceuticals Inc.
$5,622
Corcept Therapeutics
$5,410
DEXCOM, INC.
$3,044
Abbott Laboratories
$2,160
RECORDATI_RARE_DISEASES_INC.
$1,972
Amgen Inc.
$1,340
Insulet Corporation
$1,277
Mannkind Corporation
$1,176
Zealand Pharma US, Inc.
$1,026
MannKind Corporation
$830
Tandem Diabetes Care, Inc.
$827
Ascensia Diabetes Care Us Inc.
$823
ABBVIE INC.
$817
Antares Pharma, Inc.
$761
Becton, Dickinson and Company
$687
Medtronic, Inc.
$682
Esperion Therapeutics, Inc.
$577
EUSA Pharma (US) LLC
$495
IBSA Pharma Inc.
$391
Shire North American Group Inc
$367
Intuity Medical Inc
$329
AbbVie Inc.
$325
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$246
Novartis Pharmaceuticals Corporation
$214
Amneal Pharmaceuticals LLC
$204
Valeritas, Inc.
$177
Madrigal Pharmaceuticals
$159
Allergan Inc.
$155
Supernus Pharmaceuticals, Inc.
$145
Amarin Pharma Inc.
$143
AbbVie, Inc.
$130
Clarus Therapeutics Inc.
$130
Embecta Corp.
$128
Ascendis Pharma Inc
$118
OptiNose US, Inc.
$101
Currax Pharmaceuticals LLC
$99
BETA BIONICS, INC.
$98
Amryt Pharma Holdings Ltd
$97
Medtronic MiniMed, Inc.
$88
Horizon Therapeutics plc
$67
Radius Health, Inc.
$65
Takeda Pharmaceuticals U.S.A., Inc.
$60
Eisai Inc.
$56
Astellas Pharma US Inc
$56
Alnylam Pharmaceuticals Inc.
$55
LifeScan, Inc.
$54
OPKO Pharmaceuticals, LLC
$49
Bayer Healthcare Pharmaceuticals Inc.
$49
Ironwood Pharmaceuticals, Inc
$49
Itamar Medical Inc
$43
Merz Pharmaceuticals, LLC
$43
Companion Medical, Inc.
$42
PFIZER INC.
$38
Regeneron Healthcare Solutions, Inc.
$30
Merck Sharp & Dohme LLC
$28
Avvisto Therapeutics, LLC
$28
Ultragenyx Pharmaceutical Inc.
$26
Neurocrine Biosciences, Inc.
$23
Chiesi USA, Inc.
$20
Roche Diabetes Care, Inc.
$19
ASSERTIO THERAPEUTICS, INC.
$19
EISAI INC.
$17
Azurity Pharmaceuticals, Inc.
$16
Ipsen Biopharmaceuticals, Inc
$16
Galderma Laboratories, L.P.
$15
Acella Pharmaceuticals, LLC
$15
Gilead Sciences, Inc.
$13
VIVUS, Inc.
$12
TheracosBio, LLC
$6
Top 3 companies account for 39.5% of all-time payments
Associated products mentioned in payments ›
AFREZZA · Accu-Chek Guide Me · Adthyza · Androgel · BAQSIMI · BASAGLAR · BD NANO · BD Nano · BD Nano 2nd Gen Pen Needle · BYDUREON · BYSTOLIC · Belviq · Brenzavvy · CONTRAVE · CREON · CYCLOSET · CeQur Simplicity · DEXCOM CGM · DEXCOM G6 CGM SYSTEM · DEXCOM G6 TRANSMITTER · DEXCOM G7 GSS (161) · Dexcom CGM · Dexcom G6 Transmitter · EFPEGLENATIDE · ENTRESTO · ETERNA · EVENITY · EVERSENSE 365 SENSOR KIT (RETAIL) · EVERSENSE E3 SENSOR KIT - RETAIL · EVERSENSE E3 SMART TRANSMITTER KIT · FARXIGA · FORTEO · FREESTYLE LIBRE · FREESTYLE LIBRE 2 · FREESTYLE LIBRE 3 · FreeStyle Libre · FreeStyle Libre 2 · FreeStyle Libre Pro · FreeStyle Libre blood glucose Flash Monitoring System · FreeStyle Lite system · GVOKE HYPOPEN · GVOKE PFS · Guardian Connect · HUMALOG · HUMULIN · INPEN SMART INSULIN DELIVERY SYSTEM · INVOKANA · ISTURISA · InPen · JANUVIA · JARDIANCE · JATENZO · Kerendia · Korlym · LEQVIO · LICART · LINZESS · LOKELMA · LYUMJEV · Linzess · MOUNJARO · MYALEPT · MYCAPSSA · Minimed 670G System · Minimed 770G System · NATPARA · NATPARA (PARATHYROID HORMONE) · NEXLETOL · NEXLIZET · NOCDURNA · NP Thyroid 60 · ONPATTRO · OTREXUP · Omnipod · OneTouch · OneTouch Verio Reflect · Otrexup · Ozempic · PRALUENT · PROCLAIM · Pogo Automatic Blood Glucose Monitoring System · Prolia · QSYMIA · QULIPTA · RECORLEV · RESMETIROM · REZDIFFRA · RYBELSUS · Rayaldee · Rayaldee (old) · Repatha · Rybelsus · SIGNIFOR LAR · SOLIQUA · SOLIQUA 100/33 · SOMAVERT · STEGLATRO · STEGLUJAN · SYNTHROID · Saxenda · Somatuline Depot · Sylvant · Synthroid · TEPEZZA · TLANDO · TOUJEO · TRADJENTA · TRULICITY · TZIELD · Tempo Welcome Kit · Tirosint · Tresiba · Tymlos · UNITHROID · V-GO · V-GO DISPOSABLE INSULIN DELIVERY · VANTA ADAPTIVESTIM · VIBERZI · Vascepa · Veozah · Victoza · WatchPAT · WatchPATONE · Wegovy · XARELTO · XYOSTED · Xeomin · Xhance · Xultophy 100/3.6 · ZEGALOGUE · Zipsor · iLet Bionic Pancreas · t-slim insulin pump · t:slim X2 Insulin Pump with Control-IQ · t:slim X2 insulin pump
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 →
The majority of payments (81%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in endocrinology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 3% for endocrinology in IL.
Geographic Context
Endocrinologists within 10 mi
10
Per 100K population
9.9
County median income
$69,022
Nearest hospital
NORTHWESTERN MEDICINE KISHWAUKEE HOSPITAL
0.0 mi
0.0 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. Kassar is a clinical cardiology specialist, with above-average Medicare volume (top 12% in IL), with speaking/promotional industry engagement in the top 3% of IL peers, with 19 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. Kassar experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Kassar performed 1,131 office visit, established patient (30-39 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. Kassar receive payments from pharmaceutical companies?
Yes. Dr. Kassar received a total of $213,109 from 79 companies across 2,158 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. Kassar's costs compare to other endocrinologists in Dekalb?
Dr. Kassar's average Medicare payment per service is $72. 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. Kassar) 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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