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Infectious Disease

Nabiya N. Siddiqui, MD

Works at hospitals in Great Falls, MT · Havre, MT · Conrad, MT … · Montana

Summary

Dr. Nabiya N. Siddiqui, MD is an infectious disease doctor at 1101 26th St S, Great Falls, MT 59405. Phone: (406) 455-5000. Accepts Medicare assignment. In 2024, Nabiya N. Siddiqui had 111 Original Medicare patients and 392 services. NPI 1518451640. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

From official Medicare data

This page shows what Medicare's official clinician data says about Nabiya N. 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 Nabiya N. Siddiqui accept Medicare assignment?
Yes. Medicare's clinician data says Nabiya N. 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.
How many Medicare patients does Nabiya N. Siddiqui see?
In 2024, CMS data shows 111 Original Medicare patients and 392 services for Nabiya N. Siddiqui. This counts Original Medicare only and measures volume, not quality.
What is Nabiya N. Siddiqui's NPI number?
1518451640. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Nabiya N. Siddiqui, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients111
Services billed to Medicare392
Different services or procedures7
Participating Medicare providerYes
Average age of these patients69

Most frequent services

  1. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)147 services
  2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)122 services
  3. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)78 services
  4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)41 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol70%
  • Arthritis59%
  • Diabetes50%
  • Depression50%
  • Chronic kidney disease42%

Hospitals where Nabiya N. Siddiqui works

Medicare's Facility Affiliation Data lists Nabiya N. 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.

  • Benefis Hospitals IncGreat Falls, MT · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 270012
  • Northern Montana HospitalHavre, MT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 271348
  • Pondera Medical CenterConrad, MT · Critical Access Hospital · Emergency services: listed by Medicare · CCN 271324
  • St Peters HealthHelena, MT · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 270003

Practice locations

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

Group practices

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

  • Benefis Hospitals Inc384 clinicians in the group

Specialties

Find other Infectious Disease doctors in Montana →

Other infectious disease doctors in Montana

Clinicians with the same Medicare primary specialty in Montana — not a recommendation.

All infectious disease doctors in Montana →

Other clinicians in Benefis Hospitals Inc

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)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1518451640
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. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians