Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Ahmet Fatih Atik, MD

Neurological Surgery Physician in Chicago, IL · enumerated 2017.

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

National Provider Identifier

1003339185

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Registry record

Entity type Individual (Type 1)

Name Dr. Ahmet Fatih Atik

Credential MD

Sex Male

Practice address Chicago, IL, 60637

Phone (177) 370-2123

Enumeration date Jul 20, 2017

Last updated in NPPES Aug 27, 2025

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 35.137605 (OH) Secondary

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License MD475216 (PA) Secondary

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License MD475216 (PA) Primary

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Ahmet Atik?

Ahmet Atik is registered in NPPES with the primary taxonomy of Neurological Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-27.