NADEEM SIDDIQUI (MD) – Gastroenterology Physician, NPI 1770577785
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
382 GASTROENTEROLOGY in WI
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Provider Addresses for NADEEM SIDDIQUI (MD)
Saint Mary's Hospital Medical Center, 1726, Shawano Avenue, Green Bay, Brown County, Wisconsin, 54303, United States
GREEN BAY, WI 543033216
Phone: (920) 496-4700
Type: Mailing
East Enterprise Avenue, Appleton, Outagamie County, Wisconsin, 54912, United States
UNIT C
APPLETON, WI 54913
Phone: (920) 738-7300
Fax: (920) 738-7301
Type: Location
4309 W MEDICAL CENTER DR STE B202
MCHENRY, IL 600508417
Phone: (847) 535-6083
Fax: (815) 455-2789
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $96.
Total Amount is formed as General ($96) + Research ($0) + Ownership ($0) = $96.
Last reported payment date: 2024-12-04 • Largest payer in this snapshot: Janssen Biotech, Inc. ($76).
Total Amount
$96
General + Research + Ownership
Payments
2
Total payment records
General Amount
$96
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 |
|---|---|
| Janssen Biotech, Inc. | $76 |
| ABBVIE INC. | $20 |
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: 2025-07-14
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20061018000040 | I | Gastroenterology | WI | TBD |
| I20250714000575 | 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 |
|---|---|---|---|---|
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 52 | 51 | $0 |
| 99222 | Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | 35 | 35 | $0 |
| 43235 | Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 22 | 21 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 14 | 13 | $0 |
| 99232 | Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | 14 | 14 | $0 |
Insurance plans in this area (ZIP 54303)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Certified Registered Nurse Anesthetist (Crna) | WI | |
| - | WI | |
| U R O L O G Y | WI | |
| - | WI | |
| P S Y C H I A T R Y | WI | |
| Certified Registered Nurse Anesthetist (Crna) | WI | |
| Vascular Surgery, General Surgery | WI | |
| - | ND | |
| Nephrology, Internal Medicine | WI | |
| Family Practice | WI |
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