Our Providers – Michigan City


Jennifer Evans, MS, FNP-BCJennifer Evans, MS, FNP-BC

Site Medical Director


Jennifer Evans, MS, FNP-BC, is the Site Clinical Director and a Family Nurse Practitioner with HealthLinc. With a Bachelor’s and Master’s of Science from Purdue University, she is a board certified Family Nurse Practitioner. Her work experience includes being a Clinical Nurse Instructor at Purdue North Central in Westville, Indiana. She is also a Special Response Nurse with Franciscan St. Anthony Health in Michigan City, Indiana, and a travel ER Nurse with American Mobile Healthcare.


John Kelly Jr. MD, FACP. AGSF-EmeritusJohn Kelly Jr. MD, FACP. AGSF-Emeritus


John Kelly Jr. MD, FACP, AGSF-Emeritus, attended the University of Notre Dame for undergraduate studies and Indiana University for medical school. He completed a surgical internship and residency at Baylor College of Medicine in Houston and an internal medicine internship at St. Francis Hospital in Evanston, IL. He has practiced medicine in Illinois and Indiana and been on staff at St. Catherine Hospital in East Chicago and St. Anthony Memorial Hospital in Michigan City. He has held teaching positions at IU Medical School Northwest, Northwestern Medical School, and the University of Illinois Medical School.


Kathy Nobles, MSN, FNP-C, RNKathy Nobles, MSN, FNP-C, RN


Kathy Nobles, MSN, FNP-C, RN is a Family Nurse Practitioner. She has an Associate’s Degree in Nursing from Ivy Tech Community College and a Master of Science in Nursing from the University of Saint Francis, IN. She is an active member of several professional associations including the Coalition of Advanced Practice Nurses of Indiana, the American Association of Nurse Practitioners, and the Society of Nurses in Advanced Practice.


Lauren Reisberg, RN

Lauren Reisberg, RN


Lauren Reisberg is a Nurse Practitioner in the Valparaiso clinic. She obtained her Master of Science in Nursing from Georgetown University. She has a strong military background and is experienced in trauma care, working with patients around the world in active combat situations. She is a member of the American Association of Nurse Practitioners and the National Navy Nurse Corps Association.


Praveen Singh, MBBS, FAAPPraveen Singh, MBBS, FAAP


Praveen Singh, MD is a Pediatrician working in the Michigan City Clinic. He obtained his Bachelor of Medicine, Bachelor of Surgery from Indira Gandhi Medical College in Shimla, India in 2004. He completed his Pediatric Residency at Maimonides Infant & Children Hospital in Brooklyn, NY. Dr. Singh has extensive experience in managing pediatric patient care and he is skilled in providing long-term care to a diverse pediatric patient population. He is a member of the American Medical Association as well as the American Academy of Pediatrics, and is certified by the American Board of Pediatrics.


Melissa Wilson, MSN, CNS, FNP-BC, BC-ADMMelissa Wilson, MSN, CNS, FNP-BC, BC-ADM


Melissa Wilson, MSN, CNS, FNP-BC, BC-ADM is a Family Nurse Practitioner. She received her Bachelors of Science in Nursing from Purdue North Central and her Masters of Science in Nursing from Valparaiso University. She has worked as a primary care provider at The South Bend Clinic, Internal Medicine, and at Porter Physicians Group. She specializes in diabetic care and is certified in Advanced Diabetes Management.


Debra Zack, D.O.Debra Zack, DO


Debra Zack, DO, is a Family Practitioner. She attended Indiana University and received her BA in Biology, and then pursued her doctorate at the University of Health Sciences in Kansas City, MO. She completed her residency at Michiana Community Hospital. She is certified by the American Osteopathic Board of Family Physicians and is an active member of the American Osteopathic Association.

April Chaja, Dental HygienistApril Chaja, Dental Hygienist


April Chaja is a Dental Hygienist in the Michigan City clinic.  She graduated from Indiana University Northwest with an Associate of Science in Dental Hygiene.  She is licensed in Indiana and Illinois and holds an Indiana State Dental Hygiene Anesthesia Permit.  She has a National Board Certificate and a Northeast Regional Board Certificate.


Brittanie Izsak, DDS


Brittanie is a dentist at Michigan City. She is graduate of the Indiana University School of Dentistry, has a Master of Science in Biology from Indiana University Purdue University Indianapolis, and a Bachelor of Science in Chemistry from Indiana University. She is passionate about community involvement and dental education, having served as Chairman on several committees with the Student Outreach Clinic Executive Board and Shelter Sealant Program and has developed programs that allow community members to take control of their dental health.



Melissa Rodriguez, LCSWMelissa Rodriguez, LCSW


Melissa Rodriguez is a Licensed Clinical Social Worker at HealthLinc’s Michigan City Location. She has held similar roles with Swanson Center and Franciscan Alliance. Her education includes a Bachelor of Liberal Studies from Purdue North Central and a Master of Social Work from Indiana University Northwest. HealthLinc loves Melissa’s dedication and excitement towards her profession!




Maureen MoynihanMaureen Moynihan


Maureen Moynihan is a HealthLinc clinical pharmacist in the Michigan City clinic. She obtained her Doctor of Pharmacy from Ohio Northern University and has multiple certifications, including Advanced Cardiac Life Support and American Heart Association First Aid Certification. She is a member of the American Pharmacists Association and American Society of Health-System Pharmacists. Maureen has studied abroad in London, England and is a strong advocate for organ donation awareness.


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