Medicare Enrolled
Dr. Kamran Ayub, MD
Gastroenterology · Oak Lawn, 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. Ayub 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. Ayub
Dr. Kamran Ayub is a gastroenterology specialist in Oak Lawn, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Ayub performed 3,252 Medicare services across 2,729 unique beneficiaries.
Between the years covered by Open Payments, Dr. Ayub received a total of $253,396 from 51 pharmaceutical and/or device companies across 552 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in gastroenterology. 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. Ayub 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 4% volume in IL
$253,396 industry payments
Medicare Practice Summary
Medicare Utilization ↗3,252
Medicare services
Top 4% in IL for gastroenterology
2,729
Unique beneficiaries
$114
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~171 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. |
615 | $105 | $286 |
| Upper GI endoscopy with biopsy A procedure to collect tissue samples from the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The samples are examined to check for abnormalities. |
375 | $52 | $1,405 |
| 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. |
189 | $71 | $195 |
| Colonoscopy with biopsy A procedure to collect tissue samples from the large intestine using a flexible tube with a camera. The samples are examined to check for abnormalities or disease. |
178 | $125 | $1,688 |
| 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. |
170 | $66 | $192 |
| 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. |
162 | $138 | $300 |
| Endoscopic ultrasound of esophagus, stomach, or upper small bowel An ultrasound exam of the esophagus, stomach, and/or upper small bowel performed using a flexible endoscope. |
152 | $175 | $1,100 |
| Endoscopic removal of bile or pancreatic duct stone A flexible endoscope is used to remove stones or debris from the bile or pancreatic ducts. |
125 | $35 | $1,639 |
| Pancreatic or bile duct stent insertion A flexible endoscope is used to place a stent into the pancreatic or bile duct to keep it open. |
119 | $381 | $2,035 |
| Radiologist review of bile duct tube placement imaging A radiologist reviews images taken during the placement of a tube into the bile duct using an endoscope. |
118 | $19 | $348 |
| 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. |
93 | $110 | $366 |
| Endoscopic ultrasound-guided needle biopsy A procedure using an ultrasound-equipped endoscope to guide a needle for tissue sampling of the esophagus, stomach, or upper small bowel. |
88 | $196 | $1,222 |
| Upper endoscopy with biopsy A procedure using a flexible tube to examine the esophagus, stomach, and upper small intestine, during which tissue samples are collected for microscopic analysis. |
87 | $100 | $750 |
| Balloon dilation of esophagus, stomach, or upper small bowel, less than 3.0 cm A procedure using a flexible endoscope to widen a narrowed section of the esophagus, stomach, or upper small bowel with a balloon that is less than 3.0 cm in length. |
58 | $100 | $1,769 |
| Endoscopic removal of pancreatic or bile duct stent A flexible endoscope is used to remove a stent from the pancreatic or bile duct. This procedure accesses the ducts internally to extract the device. |
56 | $263 | $1,617 |
| Hospital follow-up visit, high complexity Subsequent hospital inpatient or observation care for an existing patient involving high-level medical decision making, with at least 50 minutes total time on the date of the encounter. |
56 | $100 | $278 |
| Colon polyp removal with endoscopic snare This procedure removes polyps or growths from the large bowel using a flexible tube with a camera and a wire loop tool. The snare is used to cut off the growths during the examination. |
53 | $204 | $1,773 |
| Endoscopic destruction of esophagus, stomach, or bowel growth Removal of a polyp or growth in the esophagus, stomach, or upper small intestine using a flexible tube with a camera. The procedure is performed through the mouth to access and destroy the abnormal tissue. |
48 | $171 | $2,177 |
| 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. |
48 | $105 | $175 |
| Moderate sedation during GI endoscopy Sedation services provided by the physician performing a gastrointestinal endoscopic procedure. This requires an independent trained observer to assist in monitoring the patient. |
45 | $4 | $188 |
| 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. |
35 | $144 | $385 |
| Radiologist review of bile and pancreatic duct imaging A radiologist reviews images obtained from a tube placed into the bile and pancreatic ducts using an endoscope. |
34 | $23 | $372 |
| Endoscopic biopsy of gallbladder, pancreas, liver, and bile ducts A procedure using a flexible endoscope to collect tissue samples from the gallbladder, pancreas, liver, and bile ducts for examination. |
32 | $14 | $1,000 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
32 | $123 | $1,439 |
| Removal of large bowel tissue using flexible endoscope A procedure to remove tissue from the large intestine using a flexible tube with a camera. The endoscope allows the provider to access and excise the tissue directly. |
28 | $279 | $1,756 |
| Imaging guidance for procedure, 60 minutes or less Use of imaging technology to guide a medical procedure. This service lasts 60 minutes or less. |
27 | $13 | $200 |
| Endoscopy of digestive tract Imaging of the digestive tract performed from the inside using an endoscope. |
21 | $638 | $2,000 |
| Endoscopic removal of foreign body from esophagus, stomach, or upper small bowel A flexible endoscope is used to locate and remove a foreign object from the esophagus, stomach, or upper small intestine. |
20 | $119 | $1,000 |
| Endoscopic removal of esophagus, stomach, or bowel lining A procedure using a flexible endoscope to remove the tissue lining of the esophagus, stomach, and/or upper small bowel. |
19 | $217 | $1,039 |
| Telephone medical discussion, 11-20 minutes A phone conversation with a physician lasting between 11 and 20 minutes. |
19 | $48 | $125 |
| Esophageal sensation study by balloon distension This procedure evaluates how the esophagus senses pressure or stretching by inflating a small balloon within the esophagus. |
17 | $39 | $418 |
| 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. |
15 | $16 | $25 |
| Esophageal motility study A test that evaluates the movement and function of the esophagus. |
14 | $175 | $700 |
| Endoscopic ultrasound of esophagus, stomach, or small bowel An ultrasound exam of the esophagus, stomach, and/or upper small bowel performed using a flexible endoscope inserted through the mouth. |
12 | $118 | $1,990 |
| Injection to destroy abdominal nerve bundle A procedure involving the injection of an agent to destroy a bundle of nerves in the abdomen. |
12 | $75 | $750 |
| Esophageal function monitoring via nasal tube This procedure involves monitoring and recording esophageal function using a tube inserted through the nose that contains electrodes. |
12 | $137 | $575 |
| 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. |
12 | $70 | $210 |
| New patient office visit, complex (60-74 min) | 12 | $172 | $400 |
| Upper endoscopy (EGD) A diagnostic exam of the esophagus, stomach, and upper small bowel using a flexible endoscope. |
11 | $104 | $1,200 |
| Endoscopic insertion of feeding tube A flexible tube is placed into the esophagus, stomach, or upper small intestine using an endoscope to allow for feeding or medication administration. |
11 | $75 | $845 |
| Stomach outlet dilation via endoscopy A flexible tube with a camera is used to widen the opening at the bottom of the stomach. This procedure helps relieve blockages or narrowing in the stomach outlet. |
11 | $99 | $1,547 |
| Endoscopic ultrasound of lower large bowel An ultrasound examination of the lower large intestine performed using a flexible endoscope to visualize internal structures. |
11 | $89 | $489 |
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.
5.4% high complexity
38.3% medium
56.3% routine
Industry Payment Transparency
Open Payments through 2024 ↗$253,396
Total received (2018-2024)
Avg $36,199/year across 7 years
Top 3% in IL for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
51
Companies
552
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
$133,555 (52.7%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$101,091 (39.9%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$16,961 (6.7%)
Scientific / Research
Research funding and grants
$1,789 (0.7%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$31,876
2023
$26,718
2022
$54,192
2021
$66,201
2020
$16,947
2019
$31,931
2018
$25,532
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
AIMMUNE THERAPEUTICS, INC.
$14,468
Madrigal Pharmaceuticals
$5,203
Pinnacle Biologics, Inc
$5,124
ABBVIE INC.
$3,755
Olympus Corporation of the Americas
$1,935
Laborie Medical Technologies Corp.
$360
CONMED Corporation
$307
Boston Scientific Corporation
$263
Endogastric Solutions, Inc
$120
Mauna Kea Technologies, Inc.
$108
AnX Robotica Corp
$100
QOL Medical, LLC
$79
Takeda Pharmaceuticals U.S.A., Inc.
$27
Janssen Biotech, Inc.
$23
Merit Medical Systems Inc
$4
Top 3 companies account for 77.8% of 2024 payments
All-time payments by company (2018-2024) ›
Mauna Kea Technologies, Inc.
$35,928
Ambu A/S
$31,786
CONMED Corporation
$29,232
Covidien LP
$21,449
NESTLE HEALTHCARE NUTRITION INC.
$20,474
Pinnacle Biologics, Inc
$18,079
Nestle HealthCare Nutrition Inc.
$14,483
AIMMUNE THERAPEUTICS, INC.
$14,468
Allergan Inc.
$12,015
Medtronic, Inc.
$10,115
ABBVIE INC.
$7,417
AbbVie Inc.
$5,476
Madrigal Pharmaceuticals
$5,203
Endogastric Solutions, Inc
$3,686
Wilson Cook Medical Incorporated
$3,665
Aries Pharmaceuticals, Inc.
$3,444
Olympus Corporation of the Americas
$2,796
US Endoscopy
$2,660
GI Supply, Inc.
$1,993
Cook Medical LLC
$1,876
PENTAX of America, Inc.
$1,117
CapsoVision, Inc.
$1,080
Lumendi LLC
$894
Medrobotics Inc.
$587
Laborie Medical Technologies Corp.
$457
Apollo Endosurgery US Inc
$449
Ambu Inc.
$330
Boston Scientific Corporation
$297
Ethicon US, LLC
$255
Digestive Care, Inc.
$226
Gilead Sciences, Inc.
$180
QOL Medical, LLC
$155
Takeda Pharmaceuticals U.S.A., Inc.
$143
Micro-tech Endoscopy USA, Inc.
$116
AbbVie, Inc.
$114
Ardelyx, Inc.
$111
AnX Robotica Corp
$100
Janssen Biotech, Inc.
$85
Olympus America Inc.
$85
ERBE USA Inc
$80
VIVUS LLC
$48
DAVOL INC.
$47
Merck Sharp & Dohme LLC
$37
Prometheus Laboratories Inc.
$37
Merck Sharp & Dohme Corporation
$28
Amgen Inc.
$26
RedHill Biopharma Inc.
$18
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$17
PFIZER INC.
$14
Celgene Corporation
$14
Merit Medical Systems Inc
$4
Top 3 companies account for 38.3% of all-time payments
Associated products mentioned in payments ›
AMJEVITA · Axios · Barrx · Beacon · Bravo · CONMED BILIARY · CONMED GENERATORS · CONMED HEMOSTASIS · COOK MEDICAL HEMOSTASIS · CREON · CapsoCam Plus · Cook Medical Biliary · Cook Medical Sphincterotomy · Creon · DIFICID · DILUMEN · DISPOSABLE DISTAL ATTACHMENT · DiLumen · ELEVIEW · ENTYVIO · ERBE · ESOPHYX · EchoTip · Endo GIA · EndoFlip · Entyvio · FUSION QUATTRO · GATTEX · GI Genius · HET · HUMIRA · Humira · IBSRELA · LINX Reflux Management System · LINZESS · Lockado · MAVYRET · Manometry · Olympus EMR & ESD Devices · Orbera · Overstitch · PHASIX · Pancreaze · Pertzye · Photofrin · PillCam · RESMETIROM · REZDIFFRA · RINVOQ · SKYRIZI · STELARA · SUCRAID · Single Use Electrosurgical Knife KD-655 · Small Bowel · Smart Pill · SpyGlass · Sucraid · TRULANCE · VIBERZI · VOWST · XELJANZ · ZENPEP · ZEPOSIA · alpHaONE
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 (53%) are for speaking programs and promotional activities, which reflect participation in industry-sponsored educational or marketing events. This is common in gastroenterology and does not inherently indicate bias, but patients may wish to be aware. Total industry engagement is in the top 3% for gastroenterology in IL.
Geographic Context
Gastroenterologists within 10 mi
426
Per 100K population
8.2
County median income
$81,797
Nearest hospital
ADVOCATE CHRIST HOSPITAL & MEDICAL CENTER
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. Ayub is a clinical cardiology specialist, with above-average Medicare volume (top 4% 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. Ayub experienced with office visit, established patient (30-39 min)?
Based on Medicare claims data, Dr. Ayub performed 615 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. Ayub receive payments from pharmaceutical companies?
Yes. Dr. Ayub received a total of $253,396 from 51 companies across 552 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. Ayub's costs compare to other gastroenterologists in Oak Lawn?
Dr. Ayub's average Medicare payment per service is $114. 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. Ayub) 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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