Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Florence Denby, RN, CNP, APN
Nurse Practitioner in Chicago, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598773103
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Registry record
Entity type Individual (Type 1)
Name Florence Denby
Credential RN, CNP, APN
Sex Female
Practice address 345 E Superior St, Chicago, IL, 60611
Phone (312) 238-1000
Enumeration date Aug 3, 2006
Last updated in NPPES Feb 27, 2009
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209-001557 (IL) Primary
363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209-001557 (IL) Secondary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| P00068068 | Other | IL | RAILROAD MEDICARE |
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
Is NPI 1598773103 active?
Yes, as of the latest NPPES snapshot, NPI 1598773103 is active (record last updated 2009-02-27).
How do I verify Florence Denby's NPI record?
Cross-check NPI 1598773103 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-02-27.