Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Dennis B Liu, M.D.
Urology Physician in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1124076724
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Registry record
Entity type Individual (Type 1)
Name Dr. Dennis B Liu
Credential M.D.
Sex Male
Practice address 225 E Chicago Ave, Box 24, Chicago, IL, 60611
Phone (312) 227-6340
Fax (312) 227-9412
Enumeration date May 5, 2006
Last updated in NPPES Sep 2, 2013
Taxonomy & licenses
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 |
|---|---|---|---|
| 36111648 | 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.
Frequently asked questions
How do I verify Dennis Liu's NPI record?
Cross-check NPI 1124076724 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1124076724 active?
Yes, as of the latest NPPES snapshot, NPI 1124076724 is active (record last updated 2013-09-02).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-02.