Nurse Practitioner, Family in ALTON, IL
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Marissa Anne Ontis is a board-certified family nurse practitioner (FNP-C) based in Alton, Illinois.
Generated from public NPI Registry data only. Not independently verified — confirm credentials directly with the practice.
Mrs. MARISSA ANNE ONTIS specializes in Nurse Practitioner, Family.
Mrs. MARISSA ANNE ONTIS practices in ALTON, IL.
Mrs. MARISSA ANNE ONTIS's NPI number is 1629704929.