Medical Team
Inpatient Advanced Practice Providers
Kori Devoll, MSN, APRN, FNP-C
Joined Ohio Gastro in 2013. Graduating from Otterbein University with a Master of Science in Nursing.
Amanda Gayetsky, PA-C
Joined Ohio Gastro in 2014. Graduated from Westminster College with a Bachelor of Science in Biology. Then went onto obtain a Master of Medical Science in Physician Assistant Studies from Lincoln Memorial University – Debusk College of Osteopathic Medicine.
Erika Gillette, PA-C
Joined Ohio Gastro in 2023. Graduated from Ohio University with a Bachelor of Science in Chemistry. Then went onto obtain a Master of Medical Science in Physician Assistant Studies from Ohio Dominican University.
Jessica Gligora, MS, APRN, FNP-C
Joined Ohio Gastro in 2017. Graduated Summa Cum Laude from Mount Carmel College of Nursing with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program at Otterbein University.
Erin Hartman, MS, APRN, FNP-BC
Joined Ohio Gastro in 2015. Graduated from Mount Carmel College of Nursing with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science from Mount Carmel College of Nursing.
Ellyn Kegelmeyer, PA
Joined Ohio Gastro in 2023. Graduated from Ohio Dominican University with a Bachelor of Science. Then went onto obtain a Master of Science in Physician Assistant Studies also at Ohio Dominican University.
Tracy King, CNP
Joined Ohio Gastro in 2026. Graduated from Columbus State Community College with an Associate Degree of Science. Then went onto obtain a Bachelor of Science in Nursing from Ohio University. Tracy then obtained a Master of Science in Nursing from Kaplan University and completed the Post Graduate Certificate Program at Mount Carmel College of Nursing.
Kathryn Linkous, CNP
Joined Ohio Gastro in 2026. Graduated from Mount Carmel College of Nursing with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in Nursing – Family Nurse Practitioner from Mount Carmel College of Nursing.
Barbara Looser, MS, APRN, ANP-C
Joined Ohio Gastro in 2005. Graduated Summa Cum Laude from The Ohio State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science with studies in Adult Health & Illness at The Ohio State University.
Diana Mamula, MS, APRN, FNP-C
Joined Ohio Gastro in 2022. Graduated from Kent State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program at Mount Carmel College of Nursing.
Iryna Miller, MSN, APRN, AGACNP-BC, CCRN
Joined Ohio Gastro in 2020. Graduated from Ohio University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Adult-Gerontology Acute Care Nurse Practitioner Program at The Ohio State University.
Erin Piontkowski, CNP
Joined Ohio Gastro in 2024. Graduated from Ohio State University with a Bachelor of Science in Nursing. Then went onto Otterbein University and received a Master of Science in Nursing in the Family Nurse Practitioner program.
Stephana Reed, MSN, APRN, FNP-C
Joined Ohio Gastro in 2022. Graduated from The University of Cincinnati with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program at The University of Cincinnati.
Antoniya Robinson, MS, APRN, FNP-C
Joined Ohio Gastro in 2021. Graduated from The Ohio State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program at The Ohio State University.
Ashley Spain, PA-C
Joined Ohio Gastro in 2024. Graduated from Kettering College with a Bachelor of Science in Human Biology. Then went onto obtain a Master of Physician Assistant Studies from Kettering College.
Katherine Van Volkinburg, CNP
Joined Ohio Gastro in 2025. Graduated from Firelands Regional Medical Center School of Nursing – Bowling Green State University with an Associate RN – Associate of Science. Then went onto obtain a Bachelor Science of Nursing from Bowling Green State University. Katherine then obtained a Masters of Science – FNP from The Ohio State University.
Tyler Weaver, MSN, APRN, AGNP-C
Joined Ohio Gastro in 2014. Graduated from Western Michigan University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science from the University of Cincinnati.