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

Dr. Sandeep Mahajan, MD

Gastroenterology Physician in Rolling Meadows, IL · enumerated 2012.

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

National Provider Identifier

1700142395

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Sandeep Mahajan

Credential MD

Sex Male

Practice address Rolling Meadows, IL, 60008

Phone (847) 618-0850

Fax (847) 618-0859

Enumeration date Apr 9, 2012

Last updated in NPPES May 5, 2021

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

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 036145318 (IL) Primary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD043311 (DC) 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

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 Sandeep Mahajan?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-05.