Founder, Lindenhurst Family Practice

Dr. Stephen J. Clark was raised in Neenah, Wisconsin and has been practicing medicine since 1985. Dr. Clark attended both college and medical school at Northwestern University in Evanston, Illinois and completed his residency at St. Luke's Hospital in Chicago, Illinois.  

Lindenhurst Family Practice opened its doors in 1999. The team at LFP is committed to providing the highest quality of care and strives to empower patients with communication and an understanding of their health and collaborative wellness plan. 

Dr Stephen J. Clark has been in practice for over 30 years and is dedicated to serving families throughout various milestones in their lives.  Dr. Clark enjoys spending time with his lovely wife, their family, black Labrador Rayna, and is an avid outdoorsman. 


meet your providers

Dr Christine Kharasch, MD

Dr. Kharasch (pron. care-ish) has been practicing medicine since 1989. She earned her undergraduate degree at Illinois State University, attended Medical School at Southern Illinois School of Medicine, and completed her residency at West Suburban Hospital.

She is a respected member of the Lindenhurst Family Practice Team.  Dr. Kharasch highly values helping people lead a healthier lifestyle, provides excellent quality of care, prides herself in running on time, is compassionate, thorough, focused and efficient.


Chris Wyszomirski, PA-C

Head Physician Assistant at Lindenhurst Family Practice, Practicing since 2000

Chris completed her undergraduate studies at the University of Chicago, her Master’s at the Illinois Institute of Technology, and her Physician Assistant education at Rosalind Franklin University. She began her career in technology and transitioned to medicine after caring for her parents. She is going into her 14th year with us at Lindenhurst Family Practice and fits in perfectly with our family setting. As a provider she is very knowledgeable, incredibly caring, an excellent listener and very approachable with both staff and patients. She has raised three wonderful children and enjoys spending time with them and her two beautiful grandchildren, and family. Chris is a wonderful practitioner and we are grateful to have her as a team member!
Wellness tips: Get your annual screenings; Paps, mammograms, colonoscopys.
Eat a healthy diet, drink plenty of water, EXERCISE!!! And get out and enjoy the outdoors.


Andrew Prelletz, PA-C

Physician Assistant, Practicing since 2016

Andy completed his Undergrad at University of Illinois at Champaign-Urbana, with a BS in Kinesiology, went to PA school at Rosalind Franklin School of Medicine and Science, has his MS in Physician Assistant Practice and has been happily married for almost a year now! Andy credits his mom as his biggest motivator for choosing a career in medicine; she worked diligently as a nurse when he was growing up, always going above and beyond to ensure her patients were cared for, even through a 19 year battle with breast cancer. The chance to serve others as she did has been a fitting pursuit in the field of medicine for Andy. Andy’s goals as a practitioner are to provide high level, compassionate, patient-centered care and to encourage patients to be a part of the decision making process, offering knowledge and expertise to create a plan best suited for their needs. Andy is passionate about his own health and fitness and loves Chicago sports teams, especially the Bears and Blackhawks. Andy helped integrate Lindenhurst Family Practice with it's current telemedicine program and expedited that process at the beginning of the COVID 19 pandemic. We are proud of him and grateful he is part of the team at LFP! 


Sophia O’Bryan, PA-C

Practicing since 2018

Sophia completed her undergraduate studies at the University of Wisconsin - Madison and her Master’s in Physician Assistant Studies from Marquette University.

Sophia decided to pursue the field of medicine after volunteering in Tabuga, Equador as a science teacher. One of her favorite experiences as a practitioner thus far has been working at Yellowstone National Park; she found being able to treat patients with both routine and life threatening wilderness medicine concerns very rewarding.

Sophia’s recent experience includes Illinois Bone and Joint Institute where she practiced under Dr. Roger Chams, focusing on knee and shoulder injuries. She is hard working and motivated and we greatly enjoy working with her!


Kelly M. Vinson, PA-C

Practicing since 2005

Undergraduate: University of Southern California

MS, Physician Assistant Practice: The George Washington University 


Samantha K. Josen, PA-C

Practicing since 2016

Samantha completed her Undergraduate studies Eastern Illinois University and her Masters of Science at Concordia University. As a practitioner, Samantha finds connecting with her patients very rewarding and cares for them as family. She loves seeing people happy and healthy and strives to make a difference in her patient’s lives. Her goal is to help families know that there are people out there who are just like them and that their voices are heard. She is relatable, an advocate for her patients, and wants to help them have a better future. She truly loves her patients and is a great fit in our practice.
HEALTH TIPS: 8 hours of sleep, find a passion that keeps you motivated. Remember you are not alone.