Providers

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

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

Gregg Stoner, MD, CMO

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…

Read More
David Holden, MD

After Hours

Roxie Oliver-Payne, MD

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…

Read More
Sarah Koscica, MD

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…

Read More
James Kerns, MD

Olt, Carver, East Bluff

Dr. Kerns joined the Heartland team in 2014 and is the Site Lead Provider for the Armstrong location. Dr. Kerns believes that learning from those around you will enrich your life. This philosophy carries over to his medical practice of over 30 years and is evident in his caring nature. In his personal…

Read More
Jim Barnett, MD

East Bluff

Dr. Barnett joined the Heartland team in 2007 and is the Site Lead Provider for the East Bluff and Carver locations. 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…

Read More
Yvonne McCall, PA-C

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…

Read More
Towanda Harris, MD

East Bluff

Dr. Harris joined the Heartland team in 2016. She is dedicated to caring for the entire family, from newborns to the elderly. Her mission as a provider is to help her patients stay well and prevent disease.   Medical School Rosalind Franklin University of Medicine and Science   Residency Advocate…

Read More
Thembi Conner-Garcia, MD, MPH, FACP

East Bluff

Dr. Conner-Garcia joined the Heartland team in 2016. She feels strongly that a patient’s role in their own medical care is important. She takes extra time to develop a medical plan and a health plan alongside each one of her patients. In her personal time, she enjoys reading and spending time…

Read More
Christy Tharenos, MD, MSPH

East Bluff

Dr. Tharenos joined the Heartland team in 2016. From the beginning of her practice, she has made teaching a priority; both with her patients and to medical colleagues. She has a passion for combining visual art and medicine; her research involves the use of art to enhance our understanding of medicine.…

Read More
Annie Parkin-Cohen, MD

East Bluff

Dr. Parkin-Cohen joined the Heartland team in 2017. Passionate about encouraging the bond between families and their pediatrician, she likes being able to put worried parents at ease. With an easygoing and caring nature, she is dedicated to working alongside families to put together the best treatement…

Read More
Tina Saddler, FNP

Garden

Tina joined the Heartland team in 2017. Her wide variety of experience contributes to her vast knowledge of patient care. With a passion for teaching, she makes sure that her patients are involved in and understand their care plan. In her personal time, she is continuing her education and is a member…

Read More
David Gregory, MD, FAAFP

Garden

Dr. Gregory joined the Heartland team in 2017. He is laid back and approachable and makes every visit comfortable for his patients and their family. His motivation for medical practice is centered on his faithhe is here to serve. In his personal time, he enjoys singing, model railroading, playing baseball…

Read More
Douglas Harrington, MD

Olt

Dr. Harrington joined the Heartland team in 2017. He has over 35 years of experience and provides excellent care to women in every different stage of life. His personal and accessible approach to medicine makes him an exceptional choice for women’s healthcare, low and high risk patients alike.…

Read More
Angela Miller, APN

East Bluff

Angela joined the Heartland team in 2017. Her vast range of experience guides her practice and clinical interest of working with patients of all ages and different backgrounds. Her peak interest is taking care of the community and having the ability to assist those who are at greater risk for health…

Read More
John Ramirez

Garden

John Ramirez joined the Heartland team in 2019 and is a Licensed Clinical Social Worker (LCSW) located at the Garden location. John’s outlook and practice are shaped by his faith, which has been influenced by his experience being the son to missionaries (Costa Rica and Honduras), being a…

Read More
Marcus Mutidjo

Garden

Marcus joined the Heartland team in 2018. He enjoys working with the diverse patient population. He strives to help patients achieve their health-related goals using a patient-centered approach. In his personal time, he enjoys playing soccer and spending time with his wife and daughter.   …

Read More
Zackary Ladson

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…

Read More
Nicole Gill

Olt

Nicole Gill, APN, CNP, joined Heartland in 2018. She worked previously as an RN at UPH Methodist in Labor and Delivery and as an nursing instructor at Methodist College. She is passionate about women’s health and is excited to serve Heartland patients in Pekin. In her free time she enjoys being…

Read More
Susannah Dintzis

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…

Read More
Kathryn Endress

Sheridan