Individual provider · Type 1 NPI

Marissa Anne Ontis, FNP-C

Family Nurse Practitioner · Alton, IL

NPI number 1629704929 Active

Practice location

1 Memorial Dr # G181
Alton, IL 62002-6755

Call (618) 433-7066 Map

Fax (618) 433-7060

Mailing address

1 Memorial Dr # G-181
Alton, IL 62002-6722

Specialties and licenses

TaxonomyCodeLicense
Family Nurse Practitioner Primary 363LF0000X209025582 (IL)

Family Nurse Practitioner: Definition to come...

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About NPI 1629704929

Marissa Anne Ontis, FNP-C's National Provider Identifier is 1629704929, issued on Jul 28, 2022. The primary taxonomy on file is Family Nurse Practitioner (363LF0000X), and the practice location is in Alton, IL. The record was last updated on May 1, 2026.