Medical Team
Outpatient Advanced Practice Providers
Gretchen Calhoun, APRN, ANP-C
Liver Program
Joined Ohio Gastro in 2022. Graduated from George Mason University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Adult Nurse Practitioner Program at The Ohio State University.
Sara Doran, APRN, CNP
Westerville
Joined Ohio Gastro in 2023. Graduated from Mercy College of Ohio with an Associate of Science in Nursing. Then went onto obtain a Master of Science at Chamberlain College of Nursing.
Makayla Durrant, CNP
Pickerington
Joined Ohio Gastro in 2024. Graduated from Kettering College of Medical Arts with an Associate in Science in Nursing. Then went onto obtain a Bachelor of Science in Nursing from Ohio University. Makayla then obtained a Master of Science in Nursing from the University Of Cincinnati.
Brittney Dye, CNP
East, Gahanna
Joined Ohio Gastro in 2025. Graduated Cum Laude from Mount Carmel College of Nursing with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science – Adult Gerontological Acute Care Nurse Practitioner from Mount Carmel College of Nursing.
Abagail Garcia, MSN, CNP
Dublin
Joined Ohio Gastro in 2023. Graduated from Ohio State University with a Bachelor of Science in Nursing. Then continued at Ohio State to receive a Master of Science in Nursing.
Courtney Garvin, PA-C
Pickerington
Joined Ohio Gastro in 2024. Graduated from Wittenberg University with a Bachelor of Arts in Biology. Then went onto obtain a Master of Medical Sciences in Physician Assistant Studies from Salus University, College of Health Science.
Michelle Geise, FNP-C
Westerville
Joined Ohio Gastro in 2021. Graduated Cum Laude 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 The University of Cincinnati.
Pamella Kibbe, APRN, DNP, ANP-BC
Liver Program
Joined Ohio Gastro in 2021. Graduated from Bowling Green State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Adult Nursing Practitioner Program at The Ohio State University.
Kellie Lenker, FNP-C
Olentangy
Joined Ohio Gastro in 2022. Graduated from The Ohio State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Nursing Practitioner Program at the Mount Carmel College of Nursing.
Shelby McMullen, CNP
Olentangy
Joined Ohio Gastro in 2024. Graduated from Western Michigan University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program from The Ohio State University.
Joseph Price, AGNP-C
Olentangy
Joined Ohio Gastro in 2022. Graduated from The Ohio State University with a Bachelor of Science in Biology. Then went onto obtain a RN degree and a Master of Science in the Adult-Gerontology Primary Care Nurse Practitioner Program at The Ohio State University.
Jena Ren, FNP-C
East, Gahanna
Joined Ohio Gastro in 2022. Graduated from Wright State University with a Bachelor of Science in Nursing. Then went onto obtain a Master of Science in the Family Nurse Practitioner Program at Ohio University.
Andrew Scholl, PAC
Dublin
Joined Ohio Gastro in 2025. Graduated from the University of Findlay with a Bachelor of Science. Then went onto obtain a Masters of Science in Physician Assistant Studies from the University of Nebraska Omaha.
Christine Vereb, PA-C
Olentangy
Joined Ohio Gastro in 2023. Graduated from The Ohio State University with a Bachelor of Science in Biology. She then went onto obtain a Master of Medical Science in Physician Assistant Studies from Kettering College.
Amanda Viles, CNP
Westerville
Joined Ohio Gastro in 2024. Graduated from Chamberlain College of Nursing with a Associates Degree in Nursing. Then went onto obtain a Bachelor of Science in Nursing and a Master’s Degree in Nursing, Family Nurse Practitioner from Mount Carmel College of Nursing.
Melissa Writesel, FNP
Dublin
Joined Ohio Gastro in 2024. Graduated from Columbus State Community College with an Associate of Science in Nursing. Then went onto Ohio University and received a Bachelor of Science in Nursing. Melissa then received a Master of Science as a Family Nurse Practitioner from Ohio State University.