Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nabiya Nadir Siddiqui, MD

Infectious Disease Physician in Great Falls, MT · enumerated 2018.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1518451640

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Registry record

Entity type Individual (Type 1)

Name Nabiya Nadir Siddiqui

Credential MD

Sex Female

Practice address 2800 11th Ave S Ste 29, Great Falls, MT, 59405

Phone (406) 731-8851

Fax (406) 731-8318

Enumeration date Jun 21, 2018

Last updated in NPPES May 20, 2026

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 313241 (NY) Primary

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 114298 (MT) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Nabiya Siddiqui's NPI record?

Cross-check NPI 1518451640 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1518451640 active?

Yes, as of the latest NPPES snapshot, NPI 1518451640 is active (record last updated 2026-05-20).

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Bowen Trystianson Nurse Practitioner · Great Falls, MT NPI 1720604929

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-20.