Our Providers – Valparaiso


Kari Evans, DNP, RN, FNP-BCKari Evans, DNP, RN, FNP-BC


Kari Evans has a Doctorate of Nursing Practice from Valparaiso University and is a Certified Family Nurse Practitioner. She is highly skilled and dedicated with more than 20 years of extensive nursing experience in emergency care, critical care, pediatric care and educating staff. Kari also holds an array of certifications including ENPC, TNCC, ACLS, BLS, ECRN, and CEN.


Keith Gingerich, MD


Dr. Gingerich is a Family Practice Physician in Valparaiso. He graduated from Valparaiso University and received his M.D. from Indiana School of Medicine. His areas of expertise include senior health and Medicare. He is experienced in family practice and emergency medicine. Dr. Gingerich has served as a volunteer board member for many organizations, such as the United Way of Porter County and the Christian Community Action of Porter County. He has served the Valparaiso community for over 20 years.


Asha Koshy, RN, BSN

Asha Koshy, RN, BSN


Asha Koshy is a HealthLinc Nurse Practitioner Resident in the Valparaiso clinic. She graduated with a Master of Science in Nursing from San Francisco State University and obtained a Bachelor Degree from San Jose State University, where she was a Resident Advisor. Koshy is a lactation-education counselor and is passionate about pediatric medicine.


Shannon Markel, MSN, CNM, IBCLC


Shannon Markel is a Certified Nurse Mid-Wife in Valparaiso. She graduated from Indiana University and received a Master of Science in Nursing from Frontier Nursing University. She is an International Board Certified Lactation Consultant and has certifications in inpatient obstetrics and neonatal resuscitation.


Amanda Mathews, MDAmanda Mathews, MD


Amanda Mathews, MD, pursued her undergraduate degree at Loyola University Chicago and ultimately received her Doctorate from University of Iowa Carver College of Medicine. Later, Dr. Mathews completed her residency at Ventura Family Medicine Residency in California. She has been awarded with several distinctions throughout her educational career and she is a frequent volunteer to the community.


Jennifer Maya, MD

Jennifer Maya, MD

Site Medical Director


Jennifer M. Maya, MD, is a practicing Family Physician for HealthLinc and the Site Medical Director for our Valparaiso clinic. She graduated from the Indiana University School of Medicine and completed her Family Medicine Residency at St. Joseph Regional Medical Center in South Bend, Indiana as Chief Resident.


Lisa Nelson, FNP, RNLisa Nelson, FNP, RN


Lisa Nelson, FNP, RN, is a Family Nurse Practitioner at HealthLinc. She is board-certified in Neonatal Resuscitation and Basic Life Support. Lisa obtained her Associate and Bachelor of Science degrees in Nursing from Purdue North Central and went on to earn her Master of Science in Nursing from Purdue University Calumet shortly thereafter. While pursuing her undergraduate education, she began working at Memorial Hospital in South Bend, working first as a Clinical Associate and then moving to Registered Nurse in Labor and Delivery. While working towards her Master’s degree, she was a Clinical Instructor for Purdue North Central.


Leah Osorio, MDLeah Osorio, MD


Leah Osorio is a Family Medicine physician at the Valparaiso Clinic. She is a graduate of the University of Minnesota (Summa Cum Laude with Distinction) and Loyola University Chicago Stritch School of Medicine. Dr. Osorio did her residency at United Family Medicine in Minnesota where she was also Chief Resident. She has also completed the United Family Medicine Fourth Year of Mastery program in integrative medicine and development of group care model for diabetes management.


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.


Nadine Salman, MSN, RN, CNL


Nadine Salman is Nurse Practitioner Resident in the Valparaiso clinic. She is a graduate of Rush University in Chicago, where she received her Master of Science in Nursing. Salman has clinical experience working with a diverse range of patient backgrounds and spent time in a neurological intensive care unit working with patients with severe impairments. She has experience with primary adult, pediatric, and immediate care.


Raji Varughese, NP


Raji Varughese is a Nurse Practitioner Resident in the Valparaiso clinic. She obtained her Masters of Science in Nursing from the Chamberlain College of Nursing and is a HealthLinc Nurse Practitioner. She has worked as a registered nurse in Edward Hines VA Hospital in Hines, IL as a charge nurse and is currently a Clinical Instructor for Elmhurst College in Illinois. Varughese is ACLS and CPR certified.


Christopher Wirsing, DO


Christopher Wirsing is a OB/GYN in the Valparaiso clinic. He graduated from the Chicago College of Osteopathic Medicine and completed a full rotating internship before pursuing a career that focused on female health. His specialties include obstetrics, gynecology, and infertility. Dr. Wirsing is a member of the American Medical Association and the American College of Osteopathic Obstetricians and Gynecologists.

Brenda Gavin, Dental HygienistBrenda Gavin, Dental Hygienist


Brenda Gavin is a Registered Dental Hygienist in the Valparaiso clinic.  She graduated from Indiana University Northwest with an Associate of Science Degree in Dental Hygiene.  She is a licensed Dental Hygienist in Indiana, and a Registered Dental Hygienist in Illinois.  Gavin is the recipient of the Certificate of Merit for Outstanding Academic Achievement in Dental Hygiene, and a Lana Jo Podsadeck-Wild Clinical Award.


Rosemary Kusmiz-Brunette, Dental HygienistRosemary Kusmiz-Brunette, Dental Hygienist


Rosemary Kusmiz-Brunette is a Dental Hygienist in the Valparaiso clinic.  She graduated from Indiana University, South Bend with an Associate of Science Degree.  She holds a State of Indiana Dental Hygiene License, a Dental Hygiene Anesthesia Permit, and a U.S.V.I Dental Hygiene License.  She regularly takes mission trips to Haiti to provide oral health care to residents.


Julie Sausman, Dental Hygienist


Julie Sausman is a Licensed Dental Hygienist in the Valparaiso clinic.  She is a graduate of Indiana University Northwest with an Associate in Science-Dental Hygiene with Distinction.  Sausman is skilled at scaling and debridement, administering local anesthesia, diagnostic radiographs, and examination of oral cavities for irregularities.


Dean Webb, DDSDean Webb, DDS


Dean A. Webb, DDS, is a dentist with HealthLinc. Upon completing his Bachelor’s of Science at Valparaiso University, he graduated from the University of Michigan School of Dentistry with his DDS. He worked in the Emergency Department and Oral Surgery at the University of Michigan during breaks. He also served as a Dental Anatomy Instructor, a MiDent Instructor, and with the Check-Up Clinic while at the University of Michigan.


Trista Wyman, DDSTrista Wyman, DDS


Trista D. Wyman DDS is a dentist at the Valparaiso and East Chicago locations. She graduated from DePauw University with her Bachelor in Biochemistry and minor in Biology. After completing her Master of Biology from Indiana University, she graduated from Tufts University School of Dental Medicine with a DMD. Trista has also volunteered for Global Service Learning in Jamaica providing oral hygiene instruction, cancer screenings, etc.


Isaac Zeckel, DDS, MSIsaac Zeckel, DDS, MS


Isaac Zeckel, MS, DDS, graduated from Indiana University with a Master’s of Science in Cellular and Integrative Physiology in 2005 and a Doctor of Dental Surgery in 2011. While attending Indiana University, he researched new methods of identifying and classifying caries and developed an electronic training program that is used to teach early caries detection for dental students. Since graduating from Indiana University School of Dentistry, Dr. Zeckel has been caring for the oral health needs of HealthLinc patients as a full-time staff dentist. In May 2014, Dr. Zeckel accepted the Dental Director position at HealthLinc and has since been promoted to Chief Dental Officer due to the growth in his department. He strives to continue expanding and improving the dental care patients at HealthLinc receive.



Michael Roach, OD

Michael Roach, OD


Michael Roach, O.D., is an Optometrist at our Valparaiso clinic. He obtained his Bachelor of Science in Biology from Marquette University in Milwaukee before going on to Indiana University School of Optometry. Dr. Roach has over 25 years of clinical experience in the NW Indiana area, has directed the school vision screening program for the Duneland School System for the past 15 years, and has recently completed his Master’s degree in Health Care Administration from the University of Southern Indiana.

Anand Popli, MDAnand Popli, MD


Anand Popli, MD-P, is a Psychiatrist at our Valparaiso clinic. He received his Bachelor of Science in Intermediate Science at University of Combay, Jai Hind College. Then he went on to earn his M.B.B.S., his Master of Psychological Medicine and his M.D. in Psychiatry at University of Bombay, T.N. Medical College. After completing a wide variety of Fellowships at such universities as Stanford, Syracuse and Harvard, Anand has also had a vast array of appointments with hospitals in the Valparaiso area. He is certified in both Psychiatry and Geriatric Psychiatry.


Lauren Reimink, LCSWLauren Reimink, LCSW


A Licensed Clinical Social Worker, Lauren Reimink, graduated from Indiana University Northwest with a Masters of Social Work in 2010. Most recently, Lauren worked at Regional Mental Health Center as an Outpatient Intake Therapist. We are pleased to have her on board as one of our contracted BHS providers!


Broxton Davis, PharmD


Broxton Davis is a clinical pharmacist with HealthLinc. He is a graduate of the Purdue University Pharmacy Program and has work experience in a variety of settings, including oncology, infectious disease, and pharmacy legislation and policy. Broxton has served as a youth basketball coach and is a volunteer with Mental Health America.


Lynn Fletcher, PharmD, BCACP, BC-ADM, CDE, LDE
Lynn Thoma, PharmD, BCACP, BC-ADM, CDE, LDE


Lynn Fletcher is a Clinical Pharmacist as well as the director for the HealthLinc Pharmacy Residency Program. Lynn is a graduate of the Purdue University Pharmacy Program and is a sought after lecturer on topics involving community pharmacy and diabetes education. She is an active member of many community and professional organizations.





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