Medicare Enrolled
Dr. Willis Parsons, M.D.
Gastroenterology · Arlington Heights, 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. Parsons 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. Parsons
Dr. Willis Parsons is a gastroenterology specialist in Arlington Heights, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Parsons performed 2,036 Medicare services across 1,801 unique beneficiaries.
Between the years covered by Open Payments, Dr. Parsons received a total of $126,438 from 34 pharmaceutical and/or device companies across 219 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. Parsons 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 6% volume in IL
$126,438 industry payments
Medicare Practice Summary
Medicare Utilization ↗2,036
Medicare services
Top 6% in IL for gastroenterology
1,801
Unique beneficiaries
$121
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~102 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 |
|---|---|---|---|
| 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. |
250 | $132 | $343 |
| 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. |
246 | $67 | $144 |
| 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. |
171 | $97 | $246 |
| 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. |
151 | $69 | $175 |
| 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. |
130 | $19 | $290 |
| 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. |
100 | $191 | $1,593 |
| 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. |
82 | $164 | $1,360 |
| Endoscopic removal of bile or pancreatic duct stone A flexible endoscope is used to remove stones or debris from the bile or pancreatic ducts. |
76 | $145 | $3,242 |
| 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. |
63 | $51 | $1,313 |
| Endoscopic incision of pancreatic outlet A procedure where a flexible endoscope is used to make an incision in the pancreatic outlet. |
63 | $87 | $2,998 |
| 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. |
61 | $394 | $1,707 |
| 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. |
52 | $24 | $305 |
| 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. |
48 | $110 | $282 |
| Imaging guidance for procedure, 60 minutes or less Use of imaging technology to guide a medical procedure. This service lasts 60 minutes or less. |
43 | $14 | $135 |
| 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. |
38 | $309 | $1,396 |
| 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. |
38 | $148 | $401 |
| New patient office visit, complex (60-74 min) | 37 | $189 | $435 |
| 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. |
35 | $281 | $977 |
| Destruction of large bowel polyp via endoscope Removal of a polyp or growth in the large intestine using a flexible tube with a camera. The procedure is performed through the endoscope to destroy the tissue. |
29 | $128 | $8,882 |
| Liver stiffness measurement A non-invasive test that uses ultrasound or similar technology to measure the stiffness of liver tissue. This measurement helps assess the degree of liver fibrosis or scarring. |
29 | $8 | $37 |
| Stent replacement in pancreatic or bile duct A flexible endoscope is used to remove an existing stent and insert a new one into the pancreatic or bile duct. |
23 | $388 | $1,782 |
| 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. |
21 | $130 | $1,003 |
| 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. |
20 | $97 | $1,507 |
| Endoscopic exam of gallbladder, pancreas, liver, and bile ducts A diagnostic procedure using an endoscope to examine the gallbladder, pancreas, liver, and bile ducts. |
19 | $259 | $1,855 |
| 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. |
19 | $88 | $2,147 |
| 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. |
18 | $203 | $1,004 |
| Balloon dilation of pancreatic or bile duct A procedure using a flexible endoscope to widen a narrowed pancreatic or bile duct with a balloon. This helps restore the flow of digestive fluids. |
18 | $249 | $1,432 |
| 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. |
17 | $158 | $2,073 |
| Esophageal polyp or growth removal via endoscope A procedure to remove a polyp or growth from the esophagus using a flexible tube with a camera. The device is inserted through the mouth to access and destroy the abnormal tissue. |
16 | $170 | $1,945 |
| Colonoscopy A diagnostic exam of the large bowel using a flexible endoscope to visualize the interior of the colon. |
16 | $156 | $1,442 |
| Radiologist review of pancreatic duct tube placement imaging A radiologist reviews images taken during the placement of a tube into the pancreatic duct using an endoscope. |
16 | $20 | $285 |
| Upper endoscopy (EGD) A diagnostic exam of the esophagus, stomach, and upper small bowel using a flexible endoscope. |
15 | $88 | $1,258 |
| Endoscopic ultrasound of lower large bowel An ultrasound examination of the lower large intestine performed using a flexible endoscope to visualize internal structures. |
14 | $97 | $510 |
| Endoscopic injection of esophagus, stomach, or upper small bowel A procedure where a flexible endoscope is used to deliver an injection into the esophagus, stomach, or upper small intestine. |
13 | $65 | $1,882 |
| Esophageal or gastric stent placement A flexible endoscope is used to place a stent in the esophagus, stomach, or upper small bowel to keep the passage open. |
13 | $148 | $810 |
| 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. |
12 | $79 | $1,561 |
| 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. |
12 | $67 | $1,543 |
| 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. |
12 | $155 | $2,036 |
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.
6.6% high complexity
29.3% medium
64.1% routine
Industry Payment Transparency
Open Payments through 2024 ↗$126,438
Total received (2018-2024)
Avg $18,063/year across 7 years
Top 5% in IL for gastroenterology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
34
Companies
219
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
$99,689 (78.8%)
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$18,962 (15.0%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$7,787 (6.2%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$35,860
2023
$11,806
2022
$22,160
2021
$1,977
2020
$9,976
2019
$22,479
2018
$22,180
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Cook Incorporated
$19,720
FUJIFILM Healthcare Americas Corporation
$14,695
Cook Medical LLC
$432
CONMED Corporation
$310
Boston Scientific Corporation
$173
Olympus America Inc.
$166
Laborie Medical Technologies Corp.
$137
Regeneron Healthcare Solutions, Inc.
$68
ABBVIE INC.
$52
GENZYME CORPORATION
$36
Medtronic, Inc.
$33
Phathom Pharmaceuticals, Inc.
$20
Takeda Pharmaceuticals U.S.A., Inc.
$18
Top 3 companies account for 97.2% of 2024 payments
All-time payments by company (2018-2024) ›
Cook Medical LLC
$52,155
Wilson Cook Medical Incorporated
$21,066
Cook Incorporated
$19,723
FUJIFILM Healthcare Americas Corporation
$14,995
GI Supply, Inc.
$8,278
Laborie Medical Technologies Corp.
$3,337
Covidien LP
$1,707
Ambu Inc.
$898
Boston Scientific Corporation
$663
CONMED Corporation
$404
Olympus America Inc.
$343
Endogastric Solutions, Inc
$324
AbbVie, Inc.
$313
BOSTON SCIENTIFIC CORPORATION
$280
Medtronic, Inc.
$278
Takeda Pharmaceuticals U.S.A., Inc.
$250
Regeneron Healthcare Solutions, Inc.
$161
Salix Pharmaceuticals, a division of Bausch Health US, LLC
$160
Medical Device Business Services, Inc.
$148
Creo Medical Inc.
$121
Janssen Biotech, Inc.
$112
Mauna Kea Technologies, Inc.
$109
Micro-tech Endoscopy USA, Inc.
$107
GENZYME CORPORATION
$96
UCB, Inc.
$94
Braintree Laboratories, Inc.
$90
ABBVIE INC.
$75
STERIS CORPORATION
$67
Phathom Pharmaceuticals, Inc.
$20
Becton, Dickinson and Company
$17
Alfasigma USA, Inc.
$14
Allergan Inc.
$12
Aries Pharmaceuticals, Inc.
$12
Ethicon US, LLC
$11
Top 3 companies account for 73.5% of all-time payments
Associated products mentioned in payments ›
AXIOS · Axios · BEACON · BRAVO · Barrx · Beacon · CONMED BILIARY · CONMED GENERATORS · COOK MEDICAL BILIARY · COOK MEDICAL D.A.S.H · COOK MEDICAL ENDOSCOPIC ULTRASOUND · COOK MEDICAL HEMOSPRAY · COOK MEDICAL INSTINCT · CREON · Cimzia · Cook Medical Biliary · Cook Medical Endoscopic Ultrasound · Cook Medical Endoscopy · Cook Medical Hemospray · Cook Medical Hemostasis · Cook Medical Instinct · Creon · D.A.S.H. · DISPOSABLE TRIPLE LUMEN SPHINCTEROTOME · DUPIXENT · ECHOTIP INSIGHT · ELEVIEW · ENTYVIO · ESOPHYX · EXALT · EXALT BX 2 · EXALT Model D · Entyvio · Exacto Cold Snare · FUJIFILM · FUSION · FUSION QUATTRO · Fusion Quattro · GENERAL BILIARY DEVICES · GI GENIUS · GI Genius · HEMOSPRAY · Humira · Instinct · LINX Reflux Management System · LINZESS · Lockado · ManoScan · Manometry · Olympus Hemostasis Devices · Optilume BPH Drug Coated Balloon Catheter · REMICADE · SPEEDBOAT · SPYGLASS · STELARA · SUFLAVE · SUPREP · SUPREP BOWEL PREP · SUTAB · Single Use Electrosurgical Knife KD-655 · VISIGLIDE · VOQUEZNA · XIFAXAN · XIFIXAN
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 (79%) 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 5% for gastroenterology in IL.
Geographic Context
Gastroenterologists within 10 mi
410
Per 100K population
7.9
County median income
$81,797
Nearest hospital
NORTHWEST COMMUNITY HOSPITAL 1
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. Parsons is a clinical cardiology specialist, with above-average Medicare volume (top 6% in IL), with speaking/promotional industry engagement in the top 5% of IL 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. Parsons experienced with new patient office visit (45-59 min)?
Based on Medicare claims data, Dr. Parsons performed 250 new patient office visit (45-59 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. Parsons receive payments from pharmaceutical companies?
Yes. Dr. Parsons received a total of $126,438 from 34 companies across 219 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. Parsons's costs compare to other gastroenterologists in Arlington Heights?
Dr. Parsons's average Medicare payment per service is $121. 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. Parsons) 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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