Our Providers – South Bend (IUSB Campus)


Christine Hawkins, NPChristine Hawkins, NP


Christine Hawkins is a Nurse Practitioner in South Bend. She is a graduate of the Valparaiso University Family Nurse Practitioner Post-Graduate Program. She is an Advanced Practice Nurse-Board Certified ANCC with over 15 years of experience in family practice. She is skilled in diagnosis, treatment, and follow-up care with a strong focus on preventative medicine. Hawkins is a community health advocate and is involved with multiple organizations that serve the healthcare community.


Katherine A. Lisoni, MDKatherine A. Lisoni, MD


Katherine Lisoni is a practicing family physician and Site Medical Director for HealthLinc Mishawaka. She is board certified in Family Practice and a graduate of the Northwestern University School of Medicine. Dr. Lisoni completed a foreign study program in Buenos Aires, Argentina and developed a love for travel and the country. She has volunteered for multiple agencies that focus on underserved populations and health education. Dr. Lisoni is fluent in both English and Spanish.


Michelle Streb, NPMichelle Streb, NP


Michelle Streb attended Indiana University and Goshen University for her Bachelor of Science in Nursing and Masters in Nursing, respectively. She holds an array of certifications and distinctions. With nearly 30 years of nursing experience, Michelle has joined HealthLinc’s team as a Nurse Practitioner.



John Avila, DDSJohn Avila, DDS


Dr. John Avila is a dentist in the South Bend clinic. He is a graduate of Indiana University School of Business and a Doctor of Dental Surgery from Indiana University School of Dentistry. Dr. Avila holds a license in General Practice in Dentistry in Indiana, an Indiana Controlled Substances Registration, and a United States Drug Enforcement Agency license. His range of skills include all aspects of diagnosis and restoration, periodontal treatment, fixed and removable prosthetics, and oral surgery.


Isaac Zeckel, DDS, MSIsaac Zeckel, DDS, MS


Isaac Zeckel, DDS, MS, is the Dental Director for HealthLinc. After completing his Bachelor of Science in Pre-Medicine at Purdue University, he graduated from Indiana University with a Master of Science in Cellular and Integrative Physiology and a Doctor of Dental Surgery. He has been a Research Assistant in Preventative and Community Dentistry with the Indiana University School of Dentistry.












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HealthLinc, Inc. is a Health Center Program grantee under 42 U.S.C. 254b, and a deemed Public Health Service employee under 42 U.S.C. 233(g)-(n).