Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ahmed Faraz Siddiqui, D.O.

Nephrology Physician in Chicago, IL · enumerated 2016.

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

National Provider Identifier

1235584541

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ahmed Faraz Siddiqui

Credential D.O.

Sex Male

Practice address 1426 W Washington Blvd, Chicago, IL, 60607

Phone (312) 829-1424

Enumeration date Apr 25, 2016

Last updated in NPPES Jul 10, 2020

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 02005873A (IN) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License 036148488 (IL) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

Is NPI 1235584541 active?

Yes, as of the latest NPPES snapshot, NPI 1235584541 is active (record last updated 2020-07-10).

How do I verify Ahmed Siddiqui's NPI record?

Cross-check NPI 1235584541 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Circle Medical Management, Inc. Specialist · Chicago, IL NPI 1184636516 Roger Rodby Nephrology Physician · Chicago, IL NPI 1043327927 Marvin Sinsakul Nephrology Physician · Chicago, IL NPI 1073620936 Edmund J Lewis Specialist · Chicago, IL NPI 1306900386 Karen Rezabek Registered Dietitian · Chicago, IL NPI 1902015605 Jennifer Lazor Nephrology Physician · Chicago, IL NPI 1346515871 Chaudhry Hamood Dhillon Nephrology Physician · Chicago, IL NPI 1306331277 Srs-Chicago Circle, LLC End-Stage Renal Disease (ESRD) Treatment Clinic/Center · Chicago, IL NPI 1497402770

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-10.