Quick answers
- Which hospitals does Sumaiya Siddiqi work at?
- Medicare's official clinician data lists Sumaiya Siddiqi at 5 hospitals: Black River Memorial Hospital, Crossing Rivers Health Medical Center, Gundersen Lutheran Medical Center, Gundersen St Josephs Hospital and Clinics and Tomah Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sumaiya Siddiqi see patients?
- Medicare's clinician data lists 13 practice locations, including Sparta, WI, Waukon, IA and Onalaska, WI. Call before your visit to confirm the address.
- What is Sumaiya Siddiqi's specialty?
- Medicare lists Nephrology as the primary specialty, and also Internal Medicine.
- Does Sumaiya Siddiqi accept Medicare assignment?
- Yes. Medicare's clinician data says Sumaiya Siddiqi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Sumaiya Siddiqi offer telehealth?
- Medicare's clinician data says Sumaiya Siddiqi offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Sumaiya Siddiqi?
- (608) 269-6731, as listed in official Medicare / NPI Registry data.
- What is Sumaiya Siddiqi's NPI number?
- 1679607709. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sumaiya Siddiqi works
Medicare's Facility Affiliation Data lists Sumaiya Siddiqi at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Black River Memorial HospitalBlack River Falls, WI · Critical Access Hospital · CCN 521333
- Crossing Rivers Health Medical CenterPrairie Du Chien, WI · Critical Access Hospital · CCN 521330
- Gundersen Lutheran Medical CenterLa Crosse, WI · Acute Care Hospital · CCN 520087
- Gundersen St Josephs Hospital and ClinicsHillsboro, WI · Critical Access Hospital · CCN 521304
- Tomah Memorial HospitalTomah, WI · Critical Access Hospital · CCN 521320
Practice locations
Addresses where Sumaiya Siddiqi is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 13; the Medicare profile lists all.
- 1111 W Wisconsin StSparta, WI 54656 (608) 269‑6731
- 120 2nd Ave SEWaukon, IA 52172 (563) 568‑3000
- 1600 Main StOnalaska, WI 54650 (608) 783‑4681
- 16812 S Main StGalesville, WI 54630 (608) 582‑2025
- 1830 State Hwy 9, Suite 100Decorah, IA 52101 (563) 382‑3140
Group practices
Medicare enrollment lists Sumaiya Siddiqi as a member of these groups (CMS data updated 2026-10-02).
- Gundersen Lutheran Medical Center Inc895 clinicians in the group
- Gundersen Clinic Ltd418 clinicians in the group
- Gundersen Regional Clinics, LLC53 clinicians in the group
Specialties
- Nephrologyprimary
- Internal Medicinealso
Other nephrologists in Wisconsin
Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1991 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1679607709 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians