DR. WILLIS G PARSONS (M.D.) – Gastroenterology Physician, NPI 1972578698
Gastroenterology Physician
Main info
Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
978 GASTROENTEROLOGY in IL
Provider Addresses for DR. WILLIS G PARSONS (M.D.)
880 W CENTRAL RD STE 4500
ARLINGTON HEIGHTS, IL 600052388
Phone: (847) 725-8640
Fax: (847) 394-2777
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 58 Open Payments records for all available years, with a total value of $47,667.
Total Amount is formed as General ($47,667) + Research ($0) + Ownership ($0) = $47,667.
Last reported payment date: 2024-12-04 • Largest payer in this snapshot: Cook Incorporated ($19,720).
Total Amount
$47,667
General + Research + Ownership
Payments
58
Total payment records
General Amount
$47,667
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-04
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Cook Incorporated | $19,720 |
| FUJIFILM Healthcare Americas Corporation | $14,695 |
| Wilson Cook Medical Incorporated | $10,000 |
| Cook Medical LLC | $1,109 |
| Boston Scientific Corporation | $513 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-11-13
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20071113000220 | I | Gastroenterology | IL | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 250 | 250 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 246 | 121 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 171 | 145 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 151 | 140 | $0 |
| 74328 | Review by radiologist of image from tube placement into bile duct using an endoscope | 130 | 111 | $0 |
Insurance plans in this area (ZIP 60005)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| N E U R O L O G Y | IL | |
| Hospitalist, Internal Medicine | IL | |
| O P H T H A L M O L O G Y | IL | |
| - | IL | |
| E N D O C R I N O L O G Y | IL | |
| Cardiovascular Disease (Cardiology), Interventional Cardiology | IL | |
| Clinical Social Worker | IL | |
| Certified Nurse Midwife (Cnm) | IL |
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