Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey Warren Hamilton, MD

Critical Care Medicine (Internal Medicine) Physician in Bannockburn, IL · enumerated 2005.

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

National Provider Identifier

1912990052

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey Warren Hamilton

Credential MD

Sex Male

Practice address 2151 Waukegan Rd Ste 110, Bannockburn, IL, 60015

Phone (847) 236-1300

Fax (847) 236-9637

Enumeration date Aug 24, 2005

Last updated in NPPES Oct 13, 2020

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036088379 (IL) Primary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036088379 (IL) Secondary

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

Other identifiers

Identifier	Type	State	Issuer
36-3200051	Other	IL	FEIN
036088379	Medicaid	IL	-

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 Jeffrey Hamilton's NPI record?

Cross-check NPI 1912990052 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1912990052 active?

Yes, as of the latest NPPES snapshot, NPI 1912990052 is active (record last updated 2020-10-13).

Other providers at this practice address

Browse all →

Semil Mehta Critical Care Medicine (Internal Medicine) Physician · Bannockburn, IL NPI 1972596021 Benjamin Margolis Pulmonary Disease Physician · Bannockburn, IL NPI 1174600514 Payal Naik Pulmonary Disease Physician · Bannockburn, IL NPI 1609063403 Deepanjali Jain Internal Medicine Physician · Bannockburn, IL NPI 1477114064 Ali Khan Pulmonary Disease Physician · Bannockburn, IL NPI 1326278417

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