DR. JOHN NICHOLAS TASIOPOULOS (D.O.) – Gastroenterology Physician, NPI 1346384492
Gastroenterology Physician
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Doctor Profile
Contacts
Profile Insights
NPPES metrics only — not quality of care.
978 GASTROENTEROLOGY in IL
Provider Addresses for DR. JOHN NICHOLAS TASIOPOULOS (D.O.)
1880 W WINCHESTER RD
SUITE 201
LIBERTYVILLE, IL 600485341
Phone: (847) 247-0187
Fax: (847) 247-0487
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 366 Open Payments records for all available years, with a total value of $8,183.
Total Amount is formed as General ($8,183) + Research ($0) + Ownership ($0) = $8,183.
Last reported payment date: 2024-12-23 • Largest payer in this snapshot: ABBVIE INC. ($1,640).
Total Amount
$8,183
General + Research + Ownership
Payments
366
Total payment records
General Amount
$8,183
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| ABBVIE INC. | $1,640 |
| CapsoVision, Inc. | $1,250 |
| Janssen Biotech, Inc. | $1,059 |
| Salix Pharmaceuticals, a division of Bausch Health US, LLC | $699 |
| Takeda Pharmaceuticals U.S.A., Inc. | $664 |
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: 2005-10-05
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 |
|---|---|---|---|---|
| I20051005001257 | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 387 | 327 | $0 |
| 99204 | New patient office or other outpatient visit, 45-59 minutes | 271 | 271 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 230 | 227 | $0 |
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 166 | 160 | $0 |
| G0105 | Colorectal cancer screening; colonoscopy on individual at high risk | 45 | 45 | $0 |
Insurance plans in this area (ZIP 60048)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| - | IL | |
| Gastroenterology, Internal Medicine | CA | |
| Gastroenterology, Internal Medicine | IL | |
| G A S T R O E N T E R O L O G Y | IL | |
| Nurse Practitioner | IL | |
| Physician Assistant | IL | |
| Gastroenterology, Internal Medicine | IL |
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