Clinicians

Sarah Koscica, MD

Interim Chief Medical Officer
Family Medicine
Site Medical Director
HHS Garden

Dr. Koscica joined the Heartland team in 2014. With over 15 years of 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…

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James Barnett, MD

Family Medicine
HHS Wisconsin

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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Roxie Oliver-Payne, MD

Family Medicine
HHS Wisconsin

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

Family Medicine & Obstetrics
Director of Obstetrics
HHS Wisconsin & 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. He…

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Archana Ramesh, MD

Family Medicine & Obstetrics
HHS Olt & Wisconsin

Dr. Ramesh joined the Heartland team in 2022. She looks forward to growing her practice and connecting with her community.   Medical School Chicago Medical School Residency University of Illinois College of Medicine, Peoria Fellowship University of Illinois College of Medicine Professional Memberships…

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Brian Bamberger, MD

After Hours Care Director
Internal Medicine & Pediatric Medicine
HHS Knoxville

Dr. Bamberger has been practicing medicine for over 9 years. He joined the Heartland Health Services team in 2014 as a resident and continues to serve the community as our After Hours Care Director.   In his free time, Dr. Bamberger enjoys long distance running.    Medical School Doctorate…

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John Mihelcic, MD

Director of Behavioral Health and Medication Assisted Therapy
Family Medicine, Obstetrics, and Gynecology
HHS Wisconsin

Dr. John Mihelcic practices medicine by treating the patient as a whole person, including their emotional, mental, and spiritual health, not just their physical wellbeing. He empowers his patients to take charge of their health and tailor the care plan to the individual. While caring for pregnant women…

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Bobby Lucia, DNP, FCCP

Family Medicine & Pediatric
HHS Vandever, John H. Gwynn Jr., and
After Hours Care

Dr. Bobby Lucia has a deep commitment to making tangible differences in the lives of his patients through patient-centered care and education. Dr. Lucia joined Heartland Health Services to align himself with an organization that shares his dedication to compassionate care and a commitment to helping…

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Todd Karas, DPM

Podiatry
HHS Knoxville

Julie Ludlum, CNM, APN

Certified Nurse Midwife
HHS Olt & Wisconsin

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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Heather Boore, APN, FPA

Pediatrics, Family Nurse Practitioner
HHS Sheridan & Wisconsin

Heather joined Heartland Health Services in 2025 and is a dedicated healthcare professional with a wealth of experience in nursing and patient care. She has built a diverse career across various nursing specialties, including obstetrics, pediatrics, diabetes care, and leadership. During her leadership…

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Courtney Wyatt, WHNP

Women's Health Nurse Practitioner
HHS Knoxville

Courtney Wyatt joined Heartland Health Services in 2023 and is a Women’s Health Nurse Practitioner who has been working in Women’s Health for the last 12 years. She earned her Bachelor’s degree at Illinois State University in 2009 and shortly after began working on a Labor and Delivery…

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Amanda Boitnott, WHNP-BC

Women's Health Nurse Practitioner
HHS Knoxville

  Amanda joined Heartland in 2025 but has been caring for women since 1997 when she graduated from the University of Kentucky Nursing school. She started as a Labor and Delivery nurse  at OSF in Bloomington for 10 years. She then pursued her Masters in Nursing and in 2009 obtained her WHNP…

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Dina Witter, WHNP

Women's Health Nurse Practitioner
HHS Wisconsin

  Biography coming soon    

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Kristina McCue, PMHNP-BC

Psychiatric Mental Health Nurse Practitioner
HHS Wisconsin

Kristina has been an employee of Heartland Health Services since 2009. She has been in the medical field for 39 years, starting as a pharmacy technician in 1985 later becoming a certified nurse assistant and shortly thereafter entering nursing school, graduating in 1994 from Methodist School of Nursing…

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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 of 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…

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Cindy Kohtz, APRN, PMHNP-BC

Family Nurse Practitioner, Psychiatric Mental Health Nurse Practitioner
HHS Wisconsin & Vandever

In Cindy's long career in healthcare, she has not only improved the lives of countless patients during her time as a bedside nurse, but she also sowed the seeds for future generations of nurses, many of whom now also practice at Heartland, as a nursing educator. Now sharing her gifts at Heartland Health…

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Ashley Droege, PA-C

Physician Assistant Certified
HHS Garden

Ashley joined Heartland Health Services as a PA-C in 2018 and then as a PRN in 2019. In 2023, she came back to HHSIL full time in the role of PA-C.   Ashley chose Heartland Health Services because she has 2 children who are very busy with sports and being home in the evenings and on the weekends…

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Braden Williams, PA-C

Physician Assistant Certified
HHS Garden

Braden joined Heartland Health Services in 2023 following the completion of his Master's of Physician Assistant degree at St. John's University in Queens, New York. He specializes in internal medicine and pediatrics for youth ages 14+. Braden provides high quality care for all and is dedicated…

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Angela Miller, FNP-C

Family Nurse Practitioner
HHS Wisconsin

Angela joined Heartland Health Services in 2017 in primary care/walk-in clinic. She accepted the role of our Telehealth provider in 2023. Angela enjoys caring for those in our community with the greatest needs. In her spare time, she enjoys shopping and spending time with family.   Education Saint…

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Casey Kimler, DNP, APRN, FNP-BC

Family Nurse Practitioner
HHS Knoxville

Casey joined Heartland in 2025 with more than 22 years of experience in healthcare and a deep commitment to patient-centered care. She believes in meeting people where they are and values being both a resource and an advocate for her patients. She looks forward to serving individuals and families facing…

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Susannah Dintzis, APN

Family Nurse Practitioner
HHS Wisconsin

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 urgent care.   She enjoys serving culturally diverse patient populations.     She spent time…

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Ciara White, APN

Family Nurse Practitioner
HHS Wisconsin

Ciara joined the team in 2022 and serves as a Family Nurse Practitioner for the walk-in clinic at East Bluff. She worked as a pediatric nurse at the Children’s Hospital of Illinois for 7 years before becoming an APN.    In her personal time, she enjoys spending time with her family and…

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Jami Wallace, MSN, APN, FNP-BC

Nurse Practitioner
HHS John H. Gwynn

Alison Pendergast, LCPC

Licensed Clinical Professional Counselor
HHS Garden

Alison joined the Heartland team in 2022 and has worked in the industry for 10 years.   In her free time, she enjoys hiking, cooking, reading and strength training.    Education Bachelor's degree from Loyola University New Orleans  Master's degree in Clinical Mental Health Counseling…

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Mary Jennifer Meister, LCSW

Behavioral Health Program Manager
Licensed Clinical Social Worker
HHS Wisconsin

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 specializes…

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Mallory Hippler, LCPC

Licensed Clinical Professional Counselor
HHS Olt & Vandever

Angie Wilson, PMHNP-BC

Psychiatric Mental Health Nurse Practitioner
HHS Garden

Angie joined Heartland in 2025. She started her career with a bachelor’s degree in psychology, then graduated in 2008 from Lindenwood University in St. Charles, MO with a master’s degree in professional counseling. In 2015, she returned to Bradley University and completed a second bachelor’s…

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Michaela Reneau, LCSW

Licensed Clinical Social Worker
HHS Wisconsin

Alyssa Adduci, LSW

Licensed Social Worker
HHS Wisconsin

David Gregory, MD

Family Medicine, Tele-Health
Wisconsin

Shelly Shallat, MD

Pediatrics
Knoxville

Martha Willi, MD

Ophthalmology
Garden

Peter Alahi, MD

Internal Medicine, Pediatrics
Knoxville

Mouhammad Alqaisieh, MD

Internal Medicine, Pediatrics
Knoxville

Saurabh Kumar Bansal, MD

Internal Medicine
Knoxville

Joel Borden, MD

Internal Medicine
Knoxville

Kristen Chambers-Damm, MD

Internal Medicine
Knoxville

Rustin Cashel, DO

Internal Medicine
Knoxville

Tulika Chatterjee, MD

Internal Medicine
Knoxville

Madison Chu, MD

Tele-Psychiatry

Ninah Clegg-Johnson, DO

Internal Medicine, Pediatrics
Knoxville

Katie Crawley, DO

OB/GYN
Knoxville

Joshua Croland, MD

Internal Medicine
Knoxville

Kody Dormire, DO

Internal Medicine, Pediatrics
Knoxville-After Hours

Christy Enright, APN

Certified Nurse Midwife
Olt

Andrea Escobar, MD

Internal Medicine, Pediatrics
Knoxville

Bethany Ferguson, NP-C

Family Nurse Practitioner
Knoxville-After Hours

Melvin Fleming, MD

Internal Medicine
Knoxville

Jeffrey Galvan, MD

OB/GYN
Knoxville

Deepshikha Garg, MD

Internal Medicine
Knoxville

Jackson Graves, MD

Internal Medicine, Pediatrics
Knoxville

Jessica Hanks, MD

Internal Medicine, Pediatrics
Knoxville

Towanda Harris-Fuller, MD

Family Medicine
Knoxville-After Hours

Mary Harvey, MD

Pediatrics
Knoxville

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Gerri Hellhake-Hall, APN, FPA

Family Nurse Practitioner
Knoxville-After Hours

Elizabeth Hensold, LCSW

Licensed Clinical Social WorkerHSC

Javier Hernandez, DO

Internal Medicine, Pediatrics
Knoxville

Emily Horvath, MD

Internal Medicine
Knoxville

Kaleb Jacobs, DO

OB/GYN
Knoxville

Matthew Jager, DO

Internal Medicine, Pediatrics
Knoxville

Larry Lindahl, MD

Internal Medicine, Geriatric Medicine
Knoxville

Teresa Lynch, MD

OB/GYN
Knoxville

Chad Marshall, DO

Pediatrics
Knoxville-After Hours

Rafael Marquez, MD

OB-GYN
Knoxville

Brendan Minardi, DO

Internal Medicine, Pediatrics
Knoxville

Matthew Mischler, MD

Internal Medicine, Pediatrics
Knoxville

Zohra Moeenuddin, MD

Pediatrics
Knoxville

Dana Morrison, MD

OB-GYN
Knoxville

Erin Mowers, MD

Urogynecology
Knoxville

Christopher Nau, MD

Internal Medicine, Pediatrics
Knoxville

Nishi Parikh, MD

Pediatrics
Knoxville

Ann Parkin-Cohen, MD

Pediatrics
Knoxville

Bindu Patel, MD

OB/GYN
Knoxville

Nathan Petersen, MD

OB/GYN
Knoxville

Peter Phan, MD

Internal Medicine
Knoxville

Christina Pica, DO

Pediatrics
Knoxville

Anne Risk, MD

Internal Medicine, Pediatrics
Knoxville

Kaylee Rosenbaum, MD

Internal Medicine
Knoxville

Tina Saddler, NP-C

Family Nurse Practitioner
Knoxville-After Hours

Rachel Samuel, MD

Pediatrics
Knoxville-After Hours

Sidney Ann Stewart, MD

Internal Medicine, Pediatrics
Knoxville

Gail Streater, MD

Pediatrics
Knoxville

Kayla Thomas, MD

Pediatrics
Knoxville-After Hours

Stephen Thompson, MD

OB/GYN
Knoxville

Neelam Verma, MD

OB/GYN
Knoxville

Samantha Ward, DO

Pediatrics
HHS Knoxville

Michelle Whitelow, NP-C

Family Nurse Practitioner
Knoxvile-After Hours

Donald Yang, MD

Internal Medicine
Knoxville