NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Cassandra Leigh Ferguson, DC

Chiropractor in Chicago, IL · enumerated 2013.

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

National Provider Identifier

1477890416

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ms. Cassandra Leigh Ferguson
Credential DC
Sex Female
Practice address 1147 S Wabash Ave Ste 250b, Chicago, IL, 60605
Phone (312) 987-4878
Fax (312) 235-0909
Enumeration date Jan 10, 2013
Last updated in NPPES Jul 18, 2022

Taxonomy & licenses

111N00000X Chiropractor Chiropractic Providers · License 038012338 (IL) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC 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

What specialty is Cassandra Ferguson?
Cassandra Ferguson is registered in NPPES with the primary taxonomy of Chiropractor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-18.