Heartland Health Services provides high quality care for the entire family. 

To schedule an appointment call (309) 680-7600.

Gregg Stoner, MD, CMO

Doctor of Medicine HHS Garden

Dr. Stoner has been at Heartland since 1991 when it was a free clinic and staffed by all volunteer physicians. In 2006, he took on the role of Chief Medical Officer and has an integral role in the growth and success of HHS. In his personal time he enjoys spending time with his wife, three children and…

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James Barnett, MD

Doctor of Medicine HHS East Bluff

Dr. Barnett joined the Heartland team in 2007. His roots and early medical practice were in Africa which nurtured an enjoyment of work with many cultures. He hopes to bring a ‘love our neighbors as ourselves’ focus to medical practice. In his personal time, he enjoys his family (wife and…

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Sarah Koscica, MD

Doctor of Medicine HHS Garden

Dr. Koscica joined the Heartland team in 2014. With over 15 years experience in family medicine, she enjoys seeing multiple generations within the same family.   In her spare time, Dr. Koscica likes to stay busy. When she’s not spending time with her family and twin boys, you can find her…

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Roxie Oliver-Payne, MD

Doctor of Medicine HHS Carver

Dr. Oliver- Payne joined the Heartland team in 2015. She is a proud University of Illinois graduate and has studied on almost all of the U of I campuses. She is passionate about all aspects of women’s health and family planning.   As a mother of two, she is interested in all baby related…

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Brogan Bahler, MD

Doctor of Medicine HHS East Bluff/Olt

Dr. Bahler joined the Heartland team in 2022. He has practiced medicine for 6 years.  Dr. Bahler's characteristic style of practice is patient centered, focusing on patient education and advocacy.      He has been married to his high school sweetheart for 13 years and has 3 sons.…

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Christopher Johnson, MD, CSCS

Doctor of Medicine HHS East Bluff

Dr. Johnson joined the Heartland team in 2022. He has been practicing medicine since 2013. Dr. Johnson has received numerous awards and recognitions for his work. He is a father to 4 kids and several pugs, and is married to his wife Michelle. In his spare time he enjoys practicing martial arts, strength…

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Jennifer Kolettis, APN, CNP

Nurse Practitioner, HHS Knoxville, HHS East Bluff

Jennifer joined the Heartland team in 2019. It is important to create a partnership with the women I care for.  My approach is friendly, open and non-judgmental.  Jennifer began her medical career by training in the Army as a Surgical Tech and worked in that field for about 7 years.  In…

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Victoria Cadena, APN

Advanced Practice Nurse HHS Knoxville

Victoria joined the Heartland team in 2022. She has been a registered nurse for over 10 years and became an Advanced Practice Nurse in 2020. She also teaches nursing clinicals for Bradley University to help new up and coming nurses how to provide excellent and compassionate care. She describes…

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Eric Judd II, CNM, APN

Certified Nurse Midwife Advanced Practice Nurse HHS Olt

Eric joined the Heartland team in 2020 as a Certified Nurse Midwife (APRN) Advance Practice Registered Nurse for HHS OLT.Eric specializes in care before, during, and after pregnancy as well as gynecologic care.  He is passionate about women's health and access to care for the LGBTQ+ population.…

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Yvonne McCall, PA-C

Physician Assistant Certified HHS Garden

Yvonne joined the Heartland team in 2009 and serves on the provider retention committee. With over 15 years experience in community health she is dedicated to promoting overall wellness among her patients. In her personal time she enjoys running, spending time with family, and watching her two children…

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Zackary Ladson PA-C

Physician Assistant Certified HHS Tazwood

Zack joined the Heartland team in 2019 and is the Lead Site Provider for the Heartland Tazwood site in Pekin. He specializes in family practice with subspecialties in psychiatry and addiction medicine. His dedication is to ensure that his patients feel respected and valued during their visits while…

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Julie Ludlum CNM

Certified Nurse Midwife HHS Olt

Julie joined the Heartland team in 2018. Her wide variety of experience contributes to her vast knowledge of patient care. With a passion for Obstetrics, Julie became a Registered Nurse and worked for Pekin Hospitals Baby Place. Board Certified as an AMCB Certified Midwife. Julie is an active member…

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Cristy Tomaszewski, LCSW

Licensed Clinical Social Worker HHS Carver/ HHS Knoxville

Cristy joined Heartland Health Services in 2020 as a Licensed Clinical Social Worker.  Cristy is based at the Carver location and provides services at our Knoxville location one day a week. She comes to us with nearly ten years of experience in community mental health and inpatient behavioral health…

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Mary Jennifer Meister, LCSW

Licensed Clinical Social Worker, HHS East Bluff

Mary Jennifer received her Masters of Social Work and Masters of Divinity from Loyola University in 2006. She brings with her a wide range of experience including chaplaincy work, hospice, social work, foster care therapy, pastoral care, youth ministry, and community mental health. Mary Jennifer is…

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Kathryn Endress


Kathryn joined the Heartland team in September of 2014 at our Garden location. She began splitting her time between Garden and the Human Service Center the following year in 2015. In early 2018, She accepted a position at the Health Department, but continued serving Heartland patients at the After-Hours…

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Susannah Dintzis, APN,

Advanced Practice Nurse East Bluff

Susannah Dintzis, APN. BC-FNP, joined Heartland Health Services in 2019.   She has worked in a variety of settings, including school based health care, the Chicago Health Department and an urgent care.   She enjoys serving culturally diverse patient populations.     She spent time…

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