NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Abhimanyu Mahajan, M.D.

Neurology Physician in Chicago, IL · enumerated 2014.

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

National Provider Identifier

1063831089

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Abhimanyu Mahajan
Credential M.D.
Sex Male
Practice address 1725 W Harrison St Ste 755, Chicago, IL, 60612
Phone (312) 563-2030
Enumeration date Apr 8, 2014
Last updated in NPPES Jun 20, 2023

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036-151253 (IL) Secondary
2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 35133018 (OH) 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.

Read the full guide → Validate an NPI →

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 Abhimanyu Mahajan?
Abhimanyu Mahajan is registered in NPPES with the primary taxonomy of Neurology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-20.