420 W 4th St.
Mishawaka, IN 46544

Toll Free: (888) 580-1060
After Hours: (888) 580-1060
Local Phone: (574) 307-7673
Fax: (574) 307-7692

Hours of Operation:
Monday: 7:30 a.m. – 8:00 p.m.
Tuesday: 7:30 a.m. – 8:00 p.m.
Wednesday: 7:30 a.m. – 8:00 p.m.
Thursday: 7:30 a.m. – 8:00 p.m.
Friday: 7:30 a.m. – 5:00 p.m.
Saturday: 9:00 a.m. – 1:00 p.m.
Sunday: CLOSED

Lab Hours of Operation:
Monday: 8:00 a.m. – 7:00 p.m.
Tuesday: 8:00 a.m. – 7:00 p.m.
Wednesday: 8:00 a.m. – 7:00 p.m.
Thursday: 8:00 a.m. – 7:00 p.m.
Friday: 8:00 a.m. – 4:00 p.m.
Saturday: 9:00 a.m. – 12:30 p.m.
Sunday: CLOSED

Dr. Katherine Lisoni – Family Medicine

Site Medical Director

Dr. Katherine Lisoni is a practicing family physician and Site Medical Director for HealthLinc Mishawaka. She is board certified and has extensive experience in a broad range
of family practice including pediatrics, women’s health, mental health, adult and geriatric medicine. Dr. Lisoni has completed medical rotations in several provinces of Argentina. She volunteers with agencies that focus on under-served populations and health education. Dr. Lisoni is fluent in English and Spanish.

Specialties: Pediatrics, Women’s Health, Mental Health, Adult & Geriatric Medicine



Josh Avery – Family Nurse Practitioner



Arnie Lou Baker – Family Nurse Practitioner



Dr. Rebecca Bauer – Family Medicine

Dr. Rebecca Bauer is a family practice physician seeing patients in every stage of life from birth to adult. She is most interested in providing prenatal, pediatrics, and women’s health care. Dr. Bauer specializes in women’s health procedures including pap smears, colposcopies, cryotherapy and Loop Electrosurgical Excision Procedure (LEEP). She is credentialed for vaginal deliveries, but also acts as the first assistant to the collaborating obstetrician for C-sections and is therefore able to provide prenatal care to women having repeat C-sections.

Dr. Bauer enjoys taking care of new babies and providing continued care for the babies she delivers. She is experienced in procedures on newborns including circumcisions, treating lip and tongue ties, and the removal of abnormal lesions on the skin. Dr. Bauer enjoys taking care of the entire family, parents and children.

Specialties: Prenatal Care, Pediatrics, Women’s Health Care



Kayti Bonczynski – Family Nurse Practitioner



Brock Davis – Clinical Pharmacist

Clinical Pharmacist Lead

Brock Davis is the Clinical Pharmacist Lead for HealthLinc and practices out of the Mishawaka location.  He is currently board certified in Ambulatory Care and Advanced Diabetes Management.  He spends much of his clinical time managing chronic disease states and helping improve the Mishawaka clinic through co-chairing of the Quality Committee.  Brock also serves on the Board of Directors for the Indiana Pharmacists Association and is the Primary site Coordinator for HealthLinc’s PGY1 Community Pharmacy Residency Program.  Brock was also awarded the inaugural, HealthLinc Mary Beth Witcher “Patient Advocate” Award in 2019.

Specialties:  Diabetes, Hypertension and Pharmacy Resident/Student training


Erica Garrett – Certified Nurse Midwife

Erica Garrett, CNM, MSN, BSN, is a certified nurse midwife at the Mishawaka clinic. She is a graduate of Indiana University and Frontier Nursing University. Erica has worked as an RN in the Mother-Baby Unit and in Breastfeeding Support Services in the nursery and NICU at Memorial Hospital South Bend/Beacon Health Systems. She is also a Certified Lactation Specialist.



Kathleen Long – Family Nurse Practitioner



Dr. Josh Majerus – Chiropractor

Dr. Majerus’ practice focuses on treating pain and dysfunction of the spine, muscles, and joints. He has seen the impact chronic spine and muscle pain has on patients. Dr. Majerus’ main objective is to reduce pain and suffering and improve the quality of life without the use of medicine. He is a recent graduate of Logan University in St. Louis and has specific training integrating chiropractic care into a traditional medical setting. Dr. Majerus has experience in community health centers and working with an underserved population. He understands the importance of using each visit to not only provide an appropriate diagnosis, but to also offer health education, reassurance and recommend evidence-based treatment plans.

Specialties: Joint Manipulation, Musculoskeletal Rehabilitation, Patient Self-Care


Ashley Thiele – Family Nurse Practitioner

Ashley Thiele’s practice is focused on disease prevention for the entire family from birth throughout their lifespan. She recently completed her MAT (Medication Assisted Treatment) training and is looking forward to caring for those suffering with addiction. Ashley has a special interest in caring for at-risk patients suffering from medical and mental health problems as well as in primary prevention.

Specialties: MAT (Medication Assisted Treatment), Chronic Disease Management, Family Medicine With Primary Prevention


Lois Wagley – Family Nurse Practitioner

Lois Wagley is a Family Nurse Practitioner at the Mishawaka clinic. She is an experienced practitioner and provides high quality comprehensive care to a wide variety of patients. Lois believes in providing individual care to her patients and strives to create a partnership in order to meet their unique needs. She enjoys providing care for the whole family from children to older adults. Lois has a special interest in the management of menopause and providing care to the LGBTQ community.

Specialties: LGBTQ Health and Wellness, Family Practice, Menopause

Thomas Keller – Licensed Clinical Social Worker

"Great employees, nice, clean environment. Love it when they find ways to help those with low or no income. Every little bit helps so much and they sometimes have contests or promotions to help you help yourself. I am entered to win a Kindle because I had a PAP done. How awesome is that?"


"My doctor is wonderful. He takes his time and I never feel rushed. I am always in the room on time and out within a reasonable time."

"First time and I was absolutely impressed. Had a dental emergency and no insurance. HealthLinc went above and beyond my expectations. Ended up having 5 teeth pulled that have been bothering me for years. No other dentist would even touch them because I had no dental insurance. I can honestly say I was very impressed and thankful to finally have decent care at a decent price."

"I love HealthLinc! Service is always fast and friendly. Nurses and doctors are wonderful! I refer HealthLinc to all my friends!"

"Comfortable atmosphere, sliding scale payments with good physicians that care. They truly care about the patients and go above and beyond to help. I went to HealthLinc before having insurance, but still go here now that I do because I enjoy them that much. I would recommend to anyone seeking general medical help."

"I have had nothing but caring doctors and dentist here for my child. On her first dentist apt. they were very understanding and patient with my child who was afraid and comforted her very well. The doctor was amazing and I'm happy she's my daughter's new family physician."


"When we lost our health insurance I panicked, but a HealthLinc Navigator was there to help. She held my hand through the entire process and made sure I was taken care of. In a time of such uncertainty, she made me feel confident that we would be OK. "

We create healthy communities.

Same Day Appointments are Available.

For normal and after-hours healthcare advice.

HealthLinc, Inc. receives HHS funding and has Federal Public Health Service (PHS) deemed status with respect to certain health or health-related claims, including medical malpractice claims, for itself and its covered individuals.

Lilia Bonilla - Family Nurse Practitioner

Site Medical Director

Lilia Bonilla is the Site Medical Director and a Nurse Practitioner in Family Medicine. She is board certified with over 19 years of experience as a highly skilled and dedicated family nurse practitioner. Lilia provides comprehensive care for a wide variety of patients with diverse needs. She has extensive experience in family and adult medicine, women’s health and pediatrics. Lilia is a member of the American Association of Nurse Practitioners and American Nurses Association. She also serves as a preceptor and mentor for Nurse Practitioner Residents. Lilia is fluent in both English and Spanish.

Specialties: Family Practice, Women’s Health, Pediatrics


Diana Garcia Burns - Family Nurse Practitioner

Diana Garcia Burns has been serving East Chicago for over 30 years. She is experienced in family medicine, emergency medicine, public health, and administration. Diana is board certified through the American Nurses Credentialing Center and is certified in Advanced Life Support, Pediatric Life Support, and Stroke Care. She is currently an instructor for the American Heart Association and a member of the Indiana Nurses Association (INA), American Nurses Association (ANA) and American Association of Nurse Practitioners (AANP).

Specialties: Emergency Medicine, Public and Environmental Health


Dr. Ed S. Hassan - Internal Medicine

Dr. Hassan has practiced medicine on four continents: Africa, Asia, Europe, and North America, giving him a unique perspective to health care. He received additional training in Internal Medicine at Cook County Hospital in Chicago. Dr. Hassan is certified by the American Board of Internal Medicine and is a member of the American College of Physicians. He is fluent in English, Spanish and Arabic.

Specialties: Hypertension, Diabetes, Asthma, Elevated Blood Cholesterol


Salman Nadine headshot with HealthLinc lab coat

Nadine Salman - Family Nurse Practitioner

Nadine Salman delivers patient-centered care from infancy to adulthood by providing education and counseling on health promotion and disease prevention. She serves as an advocate by working in a partnership with patients and families to provide holistic care. Nadine’s passion is to give patients the tools and knowledge to help them make better health choices so they can live longer and healthier.

Specialties: Pediatrics, Disease Prevention, Adult Health and Wellness Promotion


Jessica Sinclair - Clinical Pharmacist


Dr. Carl Toren - Pediatrician

Dr. Toren’s practice is focused on the health of children, both for the present and the future. He partners with families to monitor a child’s growth, development, nutrition, and safety, while following expert guidelines for vaccinations and screenings. If sickness comes, he offers comprehensive examinations, tests to discover the cause and then arranges any necessary treatment and follow-up. Dr. Toren is fluent in both English and Spanish.

Specialties: Pediatric Development, Pediatric Nutrition, Immunizations


Charita Weekly - Family Nurse Practitioner

Charita Weekly’s number one priority is providing excellent, comprehensive health care. She serves the entire family with a focus on promoting health and maintenance. Each approach is age specific to her patient and transitions throughout their life span. With emphasis on disease prevention and wellness, she treats the whole person and assists in achieving a higher quality of life.

Specialties: Family, Medical Examiner for the Department of Transportation, Disease Prevention

Dr. Firas Adhami - Dentist

Dr. Firas Adhami is committed to alleviating the health disparities of the underserved. He is the recipient of the Excellence in Prosthodontics Award from the American College of Prosthodontics. In May 2016, he published an article in the Journal of the American Dental Association entitled “Soft-tissue calcification on a panoramic radiograph.” Dr. Adhami maintains active memberships in the American Dental Association and the Academy of General Dentistry.

Specialties: Extractions, Root Canal Therapy, Prosthodontics


April Chaja - Dental Hygienist

LaTonya Cooper - Licensed Clinical Social Worker

HealthLinc, Inc. receives HHS funding and has Federal Public Health Service (PHS) deemed status with respect to certain health or health-related claims, including medical malpractice claims, for itself and its covered individuals.

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)