Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Annissa M Sullivan, MA
Counselor in Alton, IL · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689440885
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Registry record
Entity type Individual (Type 1)
Name Annissa M Sullivan
Credential MA
Sex Female
Practice address 2615 Edwards St, Alton, IL, 62002
Phone (618) 462-2331
Fax (618) 462-2504
Enumeration date Nov 29, 2023
Last updated in NPPES Nov 29, 2023
Taxonomy & licenses
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
Where does Annissa Sullivan practice?
The practice location on file with NPPES is in Alton, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Annissa Sullivan?
The National Provider Identifier (NPI) for Annissa Sullivan is 1689440885, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-29.