Providers

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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Jim Barnett, MD

Doctor of Medicine HHS 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…

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Towanda Harris, MD

Doctor of Medicine HHS 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…

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Kwabena Boateng, MD

Doctor of Medicine, HHS East Bluff

Thembi Conner-Garcia, MD, MPH, FACP

Doctor of Medicine HHS 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…

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Christy Tharenos, MD, MSPH

Doctor of Medicine HHS 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.…

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Angela Miller, APN

Advance Practice Nurse HHS 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…

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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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Natasha Rodriguez, APN

Advanced Practice Nurse, HHS Carver

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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Tina Saddler, FNP

Family Nurse Practitioner HHS 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…

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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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David Gregory, MD, FAAFP

Doctor of Medicine HHS 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…

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Marcus Mutidjo, APN

Advanced Nurse Practice, HHS 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.   …

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Jennifer Kolettis, NP

Nurse Practitioner, HHS Knoxville, HHS East Bluff

Karen Collins, NP

Nurse Practitioner, HHS Knoxville

Zackary Ladson PAC

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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Nicole Gill APN

Advanced Practice Nurse HHS 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…

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Eric Judd II, CNM, APN

Certified Nurse Midwife Advance 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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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

John Ramirez, LCSW

Licensed Clinical Social Worker, HHS 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…

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David Holden, MD

Doctor of Medicine HHS East Bluff After Hours

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…

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Kathryn Endress

Sheridan