Sumaiya Waseem Siddiqi, MD
NPI 1679607709ActiveIndividual· Internal Medicine, Nephrology· La Crosse, WI
Internal Medicine, Nephrology (MD) with Gundersen Lutheran Medical Center Inc and 2 other groups, practicing in La Crosse, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $248,526 for 3,689 claims, against $93,878 paid for services in 2024. Lists Black River Memorial Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1679607709 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 14, 2007 |
| Last updated in NPPES | Jun 26, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 55111 | WI |
| Internal Medicine, Nephrology | 207RN0300X | 22688 | WV |
| Internal Medicine, Nephrology | 207RN0300X | 40028 | IA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (IA); Practitioner - Nephrology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 297 |
|---|---|
| Services billed | 1,453 across 30 procedure codes |
| Paid by Medicare | $93,878 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,689 · 8,487 30-day fills |
|---|---|
| Patients | 488 |
| Total drug cost | $248,526 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1991 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
- Gundersen Clinic LtdOnalaska, WI · 418 clinicians
- Gundersen Regional Clinics, LLCDecorah, IA · 53 clinicians
Hospital affiliations
- Black River Memorial HospitalBlack River Falls, WI
- Crossing Rivers Health Medical CenterPrairie Du Chien, WI
- Gundersen Lutheran Medical CenterLa Crosse, WI
- Gundersen St Josephs Hospital and ClinicsHillsboro, WI
- Tomah Memorial HospitalTomah, WI
Other facilities
- Gundersen Lutheran Renal Dialysis - la CrosseDialysis facility · La Crosse, WI
- Gundersen Lutheran Renal Dialysis - OnalaskaDialysis facility · Onalaska, WI
- Gundersen Lutheran Renal Dialysis - TomahDialysis facility · Tomah, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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