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Internal Medicine

Nimra Siddiqui, MD

Works at hospitals in Smithtown, NY · New York

Summary

Dr. Nimra Siddiqui, MD is an internal medicine doctor at 50 Route 25a, Smithtown, NY 11787. Phone: (631) 862-3000. Accepts Medicare assignment. NPI 1528709037. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 50 Route 25a, Smithtown, NY 11787 · Directions
  • Phone: (631) 862‑3000
  • Medicare: Accepts Medicare assignment
  • Hospital: St Catherine of Siena Hospital
  • Group practice: Southwest Suffolk Medical PC
  • Medical school: graduated 2015 (11 years since medical school)
  • Gender (as listed): Female

From official Medicare data

This page shows what Medicare's official clinician data says about Nimra Siddiqui, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Nimra Siddiqui accept Medicare assignment?
Yes. Medicare's clinician data says Nimra Siddiqui accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
What is Nimra Siddiqui's NPI number?
1528709037. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Nimra Siddiqui works

Medicare's Facility Affiliation Data lists Nimra Siddiqui at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • St Catherine of Siena HospitalSmithtown, NY · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 330401

Practice locations

Addresses where Nimra Siddiqui is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Nimra Siddiqui as a member of this group (CMS data updated October 2, 2026).

  • Southwest Suffolk Medical PC199 clinicians in the group

Specialties

Find other Internal Medicine doctors in New York →

Other internal medicine doctors in Smithtown

Clinicians with the same Medicare primary specialty in Smithtown, NY — not a recommendation.

All internal medicine doctors in Smithtown →

Other clinicians in Southwest Suffolk Medical PC

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year2015 (11 years since medical school)
Gender (as listed)Female
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1528709037
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians