Nadeem Siddiqui, MD
NPI 1770577785ActiveIndividual· Internal Medicine, Gastroenterology· McHenry, IL
Internal Medicine, Gastroenterology (MD) with Agnesian Healthcare Inc, practicing in McHenry, Illinois. Mostly services rather than prescriptions: Medicare paid $20,642 for 116 patients in 2024, with only 24 Part D claims. Abbvie Inc. reported $20.27 in payments in 2024, mostly food and beverage. Lists Ssm Health St Agnes Hospital-Fond Du Lac as a hospital affiliation.
Overview
| NPI | 1770577785 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 6, 2005 |
| Last updated in NPPES | Jun 24, 2026 |
| Certified by provider | Jun 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036175750 | IL |
| Internal Medicine, Gastroenterology | 207RG0100X | 35007 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IL); Practitioner - Gastroenterology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 116 |
|---|---|
| Services billed | 220 across 24 procedure codes |
| Paid by Medicare | $20,642 |
Part D prescriptions in 2024
| Prescriptions (claims) | 24 · 24 30-day fills |
|---|---|
| Total drug cost | $471.98 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Agnesian Healthcare IncWaupun, WI · 388 clinicians
Hospital affiliation
- Ssm Health St Agnes Hospital-Fond Du LacFond Du Lac, WI
Industry payments (Open Payments)
- 2024$20.27 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $20.27 | 1 |
What the 2024 payments were for
- Food and Beverage$20.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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